A spatial perception quality test method, device and equipment of a binaural rendering processing system and a storage medium

Abstract

The application discloses a spatial perception quality test method, device and equipment of a binaural rendering processing system and a storage medium, relates to the technical field of audio processing, and comprises the following steps: obtaining a binaural audio test signal obtained after a binaural rendering processing system processes a signal source; sending the binaural audio test signal to a reference monitoring earphone previously worn by a listener, so that the binaural audio test signal is played back through the reference monitoring earphone; in the process of playing back the binaural audio test signal through the reference monitoring earphone, receiving sound source positioning accuracy scores, sound source motion continuity scores, sound source motion uniformity scores and spatial immersion scores collected through a preset information input interface; and determining the spatial perception quality of the binaural rendering system based on the sound source positioning accuracy scores, the sound source motion continuity scores, the sound source motion uniformity scores and the spatial immersion scores, so as to improve the efficiency of testing the spatial perception quality of the binaural rendering system.

Description

Technical Field

[0001] This invention relates to the field of audio processing technology, and in particular to a spatial perception quality testing method, apparatus, equipment, and storage medium for a binaural rendering processing system. Background Technology

[0002] Currently, AI-enhanced binaural rendering spatial audio technology is widely used in consumer devices. A typical implementation involves: separating the original audio into musical components using AI; upconverting the separated components using object and sound bed methods to generate multi-channel audio; and then applying Head Relative Transfer Function (HRTF) or Binaural Impulse Response (BRIR) technology to perform binaural rendering on the device, allowing users to experience immersive spatial audio through headphones.

[0003] Current mainstream subjective audio evaluation methods are limited to evaluating basic sound quality attributes, and there is no systematic subjective evaluation standard for evaluating the spatial perception dimension presented by binaural rendering. Existing subjective audio evaluations only focus on basic attributes such as sound quality, clarity, and distortion, lacking a systematic evaluation system for spatial perception in binaural rendering. It is impossible to quantitatively assess sound source localization, motion trajectory, and spatial immersion. Typical defects such as head-in-the-head effect, front-to-back confusion, and positioning drift lack a unified evaluation dimension; There are no standard scoring rules in the industry, and the evaluation results are incomparable and unreproducible.

[0004] As can be seen from the above, improving the efficiency of testing the spatial perception quality of a binaural rendering system is an urgent problem to be solved. Summary of the Invention

[0005] In view of this, the purpose of this invention is to provide a method, apparatus, device, and storage medium for testing the spatial perception quality of a binaural rendering system, which can improve the efficiency of testing the spatial perception quality of a binaural rendering system during the spatial perception quality testing process. The specific solution is as follows: In a first aspect, this application provides a method for testing the spatial perception quality of a binaural rendering system, including: After the binaural rendering processing system processes the signal source, it obtains the binaural audio test signal; the binaural audio test signal includes static sound source test signal, moving sound source test signal and scene test signal of each spatial acoustic environment scene; The binaural audio test signal is sent to a reference monitoring headset worn by the listener in advance, so that the binaural audio test signal can be played back through the reference monitoring headset; During the playback of the binaural audio test signal by the reference monitoring headphones, the sound source localization accuracy score, sound source motion continuity score, sound source motion uniformity score, and spatial immersion score are received through a preset information input interface. Based on the sound source localization accuracy score, the sound source motion continuity score, the sound source motion uniformity score, and the spatial immersion score, the spatial perception quality corresponding to the binaural rendering system is determined. The sound source localization accuracy score is the score obtained by the listener after judging the localization accuracy of the static sound source test signal; the sound source motion continuity score is the score obtained by the listener after judging the speed continuity of the motion scene in the moving sound source test signal; the sound source motion uniformity score is the score obtained by the listener after judging the speed uniformity of the uniform motion scene in the moving sound source test signal; and the spatial immersion score is the score obtained by the listener after judging the sense of enclosure, spatial size and type, and externalization degree of each scene test signal.

[0006] Optionally, the step of obtaining the binaural audio test signal after the binaural rendering processing system processes the signal source includes: Based on a binaural rendering system, binaural audio test signals are generated, including static sound source test signals, moving sound source test signals, and scene test signals for various spatial acoustic environment scenarios; the spatial acoustic environment scenarios include a living room, a bathroom, and a concert hall; The static sound source test signal is used to evaluate the accuracy and stability of horizontal azimuth, vertical elevation and distance positioning, and to evaluate the ability to distinguish the front and rear directions of sound sources in front and behind on the vertical plane. The motion sound source test signal is used to evaluate whether the motion trajectory of the sound source is continuous and smooth, without jumps or breaks, and whether the motion trajectory is consistent with the preset trajectory, without deviation or sudden reversal; the motion sound source test signal includes sound sources that move at a constant speed in a straight line along the horizontal direction, move at a constant speed in a straight line along the vertical direction, and move at a constant speed along a circular trajectory. The motion sound source test signal is used to evaluate the consistency of the perceived motion speed under preset uniform motion conditions and whether there is a phenomenon of sudden speed changes. The scene test signals of each spatial acoustic environment scenario are used to evaluate the sense of immersion of sound from all directions, the ability to perceive the size and type of the sound field space, and the degree to which the sound source is perceived as being externalized outside the head.

[0007] Optionally, the reference monitoring earphone is a reference monitoring earphone that meets preset high-fidelity conditions; the frequency of the reference monitoring earphone remains flat within the preset tolerance range corresponding to ITU-R BS.1116; under preset frequency and sound pressure level conditions, the total harmonic distortion of the reference monitoring earphone is not greater than a preset distortion threshold.

[0008] Optionally, sending the binaural audio test signal to a reference monitoring headset pre-worn by the listener, so as to play back the binaural audio test signal through the reference monitoring headset, includes: Record the headphone model corresponding to the reference monitoring headphone, perform acoustic calibration on each of the reference monitoring headphones, and set the calibrated headphone as the target headphone; The binaural audio test signal is sent to the target earphone worn by the listener beforehand, and the binaural audio test signal is played back to the listener using the target earphone; the listener is in a test environment that meets the requirements of ITU-R BS.1116; the continuous background noise corresponding to the binaural audio test signal obtained at the ear height of the listener in a preset sitting posture is not greater than a preset noise threshold; the continuous background noise does not have pulsation, periodicity, or pitch characteristics.

[0009] Optionally, before receiving the sound source localization accuracy score acquired through a preset information input interface, the method further includes: Define the purpose of the assessment; If the purpose of the assessment is to locate the first damage to the sound source localization corresponding to each of the binaural audio test signals, then the static sound source test signals are localized using a double-blind three-excitation hidden reference method and based on a first damage evaluation scale, and the sound source localization results are scored to obtain the corresponding sound source localization accuracy score; the first damage is the damage that satisfies the first preset subtle condition.

[0010] Optionally, the first damage assessment scale includes, from front to back, level 1 damage, level 2 damage, level 3 damage, level 4 damage, and level 5 damage; level 1 damage is damage where the location is consistent with the reference and there is no directional deviation; level 2 damage is damage where there is a location deviation that meets preset minor conditions; level 3 damage is damage where there is a location deviation that meets preset significant conditions or where there is confusion between the preceding and following sounds a first preset number of times; level 4 damage is damage where there is location inaccuracy that meets preset severe conditions and where there is frequent confusion between the preceding and following sounds a second preset number of times; level 5 damage is damage where there is a loss of location sense and the direction of the sound source cannot be identified; the first preset number of times is less than the second preset number of times.

[0011] Optionally, before receiving the sound source localization accuracy score acquired through a preset information input interface, the method further includes: If the evaluation objective is to locate the second impairment of the sound source localization corresponding to each of the binaural audio test signals or to compare the localization accuracy performance of each binaural rendering system, then when comparing the degree of impairment between each binaural rendering system, the MUSHRA method is used and the first continuous quality scale corresponding to ITU-R BS.1534 is used to locate the static sound source test signal, and the sound source localization accuracy score is determined based on the sound source localization result; the second impairment is the impairment that meets the first preset obvious condition.

[0012] Optionally, the first continuous quality scale, from high to low, includes, in sequence, a first-level sound source localization quality, a second-level sound source localization quality, a third-level sound source localization quality, a fourth-level sound source localization quality, and a fifth-level sound source localization quality; the first-level sound source localization quality is sound source localization quality where the localization is consistent with the reference and the sound source direction meets the preset condition of clear and discernible location; the second-level sound source localization quality is sound source localization quality where there is a localization deviation that meets the preset condition of slight location deviation; the third-level sound source localization quality is sound source localization quality where there is a localization deviation that meets the preset condition of significant location deviation or where there is a third preset number of confusions; the fourth-level sound source localization quality is sound source localization quality where there is localization inaccuracy that meets the preset condition of poor location and where there is a fourth preset number of frequent confusions, and where the frequent confusions affect spatial perception; the fifth-level sound source localization quality is sound source localization inaccuracy that meets the preset condition of severe location deviation and where there is no sense of direction due to chaotic location; the third preset number of confusions is less than the fourth preset number of confusions.

[0013] Optionally, before receiving the sound source motion continuity score acquired through a preset information input interface, the following steps are also included: If the evaluation objective is to assess the third impairment of the motion continuity of the sound source corresponding to each of the binaural audio test signals, then the MUSHRA method is used and the motion continuity of the motion scene in the motion sound source test signal is judged based on the second continuity quality scale corresponding to ITU-R BS.1534 to obtain the motion continuity judgment result. Then, the corresponding sound source motion continuity score is generated based on the motion continuity judgment result. The third impairment is the impairment determined based on the system type of the binaural rendering processing system. The third impairment includes stuttering impairment, partial functional abnormality impairment, and complete signal breakage impairment that meet the preset slight conditions.

[0014] Optionally, the second continuous quality scale, from high to low, includes the following intervals in sequence: Level 1 motion continuity quality, Level 2 motion continuity quality, Level 3 motion continuity quality, Level 4 motion continuity quality, and Level 5 motion continuity quality. Level 1 motion continuity quality indicates that the motion speed of the motion sound source test signal is continuous and consistent with the perception of ideal motion. Level 2 motion continuity quality indicates the occurrence of motion fluctuations that meet preset slight conditions. Level 3 motion continuity quality indicates the occurrence of motion fluctuations that meet preset significant conditions and the occurrence of speed fluctuations at a first preset frequency. Level 4 motion continuity quality indicates the occurrence of motion fluctuations at a second preset frequency, and the perception meets preset discontinuity conditions. Level 5 motion continuity quality indicates a break in motion fluctuations that meet preset severe fluctuation conditions, and motion continuity that meets preset severe motion conditions.

[0015] Optionally, before receiving the sound source motion continuity score acquired through a preset information input interface, the following steps are also included: If the purpose of the assessment is to evaluate the fourth impairment corresponding to the motion continuity of each of the binaural audio test signals, then the trajectory continuity of the motion source test signal is judged using the double-blind three-excitation hidden reference method and based on the second impairment assessment scale corresponding to ITU-R BS.1116, and the trajectory continuity judgment result is obtained; the fourth impairment is an impairment that satisfies the second preset subtle condition. The consistency of the motion sound source test signal is judged using the third damage assessment scale to obtain a consistency judgment result. Based on the trajectory continuity judgment result and the consistency judgment result, a first judgment result to be processed is determined. Then, the motion continuity score of the sound source is determined based on the first judgment result to be processed.

[0016] Optionally, the second damage assessment scale, from high to low, includes five levels of continuous damage: Level 1, Level 2, Level 3, Level 4, and Level 5. Level 1 continuous damage occurs when the motion trajectory corresponding to the motion source test signal meets a preset continuous smooth condition, and the motion source test signal is consistent with a reference signal. Level 2 continuous damage occurs when the motion source test signal experiences a pause that meets preset perceptible and slight conditions. Level 3 continuous damage occurs when the motion trajectory of the motion source test signal experiences a pause or jump that meets preset obvious conditions, and the motion trajectory meets preset identification conditions. Level 4 continuous damage occurs when the motion trajectory of the motion source test signal experiences a break or jump that meets preset frequent conditions, and the motion trajectory has the ability to perceive motion that meets preset difficult conditions. Level 5 continuous damage occurs when the motion trajectory of the motion source test signal is completely broken and lacks the ability to perceive continuous motion.

[0017] Optionally, before receiving the sound source motion uniformity score acquired through a preset information input interface, the method further includes: If the evaluation objective is to assess the uniformity of speed perceived by each of the binaural audio test signals under a preset uniform motion expectation condition, then the MUSHRA method is used and the third continuous mass scale corresponding to ITU-R BS.1534 is used to judge the uniform motion scene in the moving sound source test signal to obtain the speed uniformity judgment result, and then the corresponding sound source motion uniformity score is generated based on the speed uniformity judgment result.

[0018] Optionally, the third continuous quality scale, from high to low, includes the following intervals in sequence: first-level speed uniformity quality, second-level speed uniformity quality, third-level speed uniformity quality, fourth-level speed uniformity quality, and fifth-level speed uniformity quality. The first-level speed uniformity quality indicates that the motion speed of the sound source test signal is uniform and consistent with the perception of ideal uniform motion. The second-level speed uniformity quality indicates that speed fluctuations satisfy a preset slight condition. The third-level speed uniformity quality indicates that speed fluctuations satisfy a preset obvious condition and occur at a first preset frequency. The fourth-level speed uniformity quality indicates that speed fluctuations occur at a second preset frequency condition and the perception satisfies a preset non-uniformity condition. The fifth-level speed uniformity quality indicates that speed fluctuations satisfy a preset non-uniformity condition and lose the characteristics of uniform motion.

[0019] Optionally, before receiving the sound source motion uniformity score acquired through a preset information input interface, the method further includes: If the evaluation objective is to assess the fifth impairment corresponding to the motion uniformity of each of the aforementioned binaural audio test signals, then the uniform motion uniformity of the motion source test signal in the motion source test signal is scored using the double-blind three-excitation hidden reference method and based on the third impairment evaluation scale corresponding to ITU-R BS.1116, and the motion uniformity score result is obtained; the fifth impairment is an impairment that satisfies the third preset subtle condition.

[0020] Optionally, the third damage assessment scale, from high to low, includes five levels of uniformity damage: Level 1, Level 2, Level 3, Level 4, and Level 5. Level 1 uniformity damage occurs when the velocity uniformity of the moving sound source test signal meets a preset uniformity condition, and the velocity uniformity of the moving sound source test signal is consistent with the reference signal. Level 2 uniformity damage occurs when the velocity uniformity of the moving sound source test signal experiences a pause that meets preset perceptible and slight conditions. Level 3 uniformity damage occurs when the velocity of the moving sound source test signal fluctuates under preset obvious conditions, and the perceived velocity uniformity meets preset obvious fluctuation conditions. Level 4 uniformity damage occurs when the velocity of the moving sound source test signal fluctuates under preset frequent conditions, and the perceived velocity uniformity meets preset difficult conditions. Level 5 uniformity damage occurs when the velocity of the moving sound source test signal meets preset severe non-uniformity conditions and does not exhibit perceptible uniform motion characteristics.

[0021] Optionally, before receiving the spatial immersion score collected through a preset information input interface, the following steps are also included: The sense of enclosure of each scenario test signal was judged by using the multiple comparison method and based on the fourth damage assessment scale corresponding to ITU-R BS.1284, and the sense of enclosure judgment results were obtained. The spatial size of each scene test signal is determined using the fourth damage assessment scale to obtain the spatial size determination result. Then, the spatial type of each scene test signal is determined using the fourth damage assessment scale to obtain the spatial type determination result. The externalization degree of each scene test signal is judged using the fourth damage assessment scale to obtain the corresponding externalization degree judgment result, and a second judgment result to be processed is generated based on the envelopment judgment result, the space size judgment result, the space type judgment result and the externalization degree judgment result; The corresponding spatial immersion score is determined based on the second judgment result to be processed.

[0022] Optionally, the fourth damage assessment scale, from high to low, includes five levels of immersion damage: Level 1 immersion damage, Level 2 immersion damage, Level 3 immersion damage, Level 4 immersion damage, and Level 5 immersion damage. Level 1 immersion damage means that the immersion, surround feeling, sound source externalization, spatial perception, and environmental atmosphere corresponding to the moving sound source test signal all meet preset qualified conditions. Level 2 immersion damage means that the immersion of the scene test signal meets preset good conditions, the surround feeling meets preset slight conditions, and the spatial perception meets preset good conditions. Level 3 immersion damage means that the scene test signal exhibits a head-in-the-head effect, the spatial perception meets preset moderate conditions, and the surround feeling meets preset insufficient conditions. Level 4 immersion damage means that the immersion of the scene test signal meets preset poor conditions, the head-in-the-head effect meets preset significant conditions, the spatial surround feeling meets preset lack conditions, and environmental perception meets preset ambiguous conditions. Level 5 immersion damage means that the immersion of the scene test signal meets preset severe conditions, the head-in-the-head effect meets preset strong conditions, and there is no spatial perception or immersive experience.

[0023] Optionally, determining the spatial perception quality corresponding to the binaural rendering system based on the sound source localization accuracy score, the sound source motion continuity score, the sound source motion uniformity score, and the spatial immersion score includes: The weights corresponding to the sound source localization accuracy score, the sound source motion continuity score, the sound source motion uniformity score, and the spatial immersion score are determined based on the application scenario of the binaural rendering system. The sound source localization accuracy score, the sound source motion continuity score, the sound source motion uniformity score, and the spatial immersion score are weighted according to the weights to obtain the spatial perception quality. The spatial perception quality is then compared with the reference evaluation results of the reference system to obtain the performance comparison results. The performance of the binaural rendering system is determined based on the performance comparison results.

[0024] Secondly, this application provides a spatial perception quality testing device for a binaural rendering processing system, comprising: The binaural audio test signal acquisition module is used to acquire binaural audio test signals obtained after the binaural rendering processing system processes the signal source; the binaural audio test signals include static sound source test signals, moving sound source test signals, and scene test signals of various spatial acoustic environment scenarios; The test signal transmission module is used to send the binaural audio test signal to a reference monitoring headset worn by the listener in advance, so that the binaural audio test signal can be played back through the reference monitoring headset; The scoring receiving module is used to receive, during the process of the reference monitoring headphones playing back the binaural audio test signal, the sound source localization accuracy score, the sound source motion continuity score, the sound source motion uniformity score, and the spatial immersion score collected through a preset information input interface. A spatial perception quality generation module is used to determine the spatial perception quality corresponding to the binaural rendering system based on the sound source localization accuracy score, the sound source motion continuity score, the sound source motion uniformity score, and the spatial immersion score. The sound source localization accuracy score is obtained by the listener after judging the localization accuracy of the static sound source test signal; the sound source motion continuity score is obtained by the listener after judging the speed uniformity of the motion scene in the moving sound source test signal; the sound source motion uniformity score is obtained by the listener after judging the speed uniformity of the uniform motion scene in the moving sound source test signal; and the spatial immersion score is obtained by the listener after judging the sense of enclosure, spatial size and type, and degree of externalization of each scene test signal.

[0025] Thirdly, this application provides an electronic device, comprising: Memory, used to store computer programs; A processor is used to execute the computer program to implement the aforementioned spatial perception quality testing method for the binaural rendering processing system.

[0026] Fourthly, this application provides a computer-readable storage medium for storing a computer program, wherein the computer program, when executed by a processor, implements the aforementioned spatial perception quality testing method for a binaural rendering processing system.

[0027] As can be seen from the above, before conducting spatial perception quality testing of the binaural rendering processing system, this application needs to obtain binaural audio test signals after processing the signal source of the binaural rendering processing system. The binaural audio test signals include static sound source test signals, moving sound source test signals, and scene test signals for various spatial acoustic environment scenarios. The binaural audio test signals are sent to reference monitoring headphones worn by the listener in advance so that the binaural audio test signals can be played back through the reference monitoring headphones. During the playback of the binaural audio test signals through the reference monitoring headphones, the sound source localization accuracy score, sound source motion continuity score, sound source motion uniformity score, and spatial immersion score are received through a preset information input interface. Based on the sound source localization accuracy score, sound source motion continuity score, sound source motion uniformity score, and spatial immersion score, the spatial perception quality corresponding to the binaural rendering system is determined.

[0028] Therefore, this application first requires obtaining the binaural audio test signal after processing the signal source by the binaural rendering system; secondly, the binaural audio test signal is sent to a reference monitoring headset worn by the listener beforehand, so that the binaural audio test signal can be played back through the reference monitoring headset; then, during the playback of the binaural audio test signal through the reference monitoring headset, the sound source localization accuracy score, sound source motion continuity score, sound source motion uniformity score, and spatial immersion score are received through a preset information input interface; finally, based on the sound source localization accuracy score, sound source motion continuity score, sound source motion uniformity score, and spatial immersion score, the spatial perception quality corresponding to the binaural rendering system is determined. In this way, the efficiency of testing the spatial perception quality of the binaural rendering system is improved during the testing process, thereby enhancing the user experience. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0030] Figure 1 This is a flowchart of a spatial perception quality testing method for a binaural rendering system disclosed in this application; Figure 2 This is a schematic diagram of the spatial perception quality testing device for a binaural rendering processing system disclosed in this application. Figure 3 This is a structural diagram of an electronic device disclosed in this application. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Currently, AI-enhanced binaural rendering spatial audio technology is widely used in consumer devices. Current mainstream subjective audio evaluation methods are limited to evaluating basic sound quality attributes, lacking a systematic subjective evaluation standard for the spatial perception dimension presented by binaural rendering. Existing subjective audio evaluations only focus on basic attributes such as sound quality, clarity, and distortion, lacking a systematic evaluation system for spatial perception in binaural rendering. Therefore, this application provides a spatial perception quality testing method for binaural rendering processing systems, which improves the efficiency of testing the spatial perception quality of binaural rendering systems.

[0033] See Figure 1 As shown, this embodiment of the invention discloses a spatial perception quality testing method for a binaural rendering processing system, comprising: Step S11: Obtain the binaural audio test signal after the binaural rendering processing system processes the signal source; the binaural audio test signal includes static sound source test signal, moving sound source test signal and scene test signal of each spatial acoustic environment scene.

[0034] In this embodiment, the following four core spatial perception evaluation dimensions are defined: sound source localization accuracy, sound source motion continuity, sound source motion uniformity, and spatial immersion.

[0035] Among them, sound source localization accuracy refers to the accuracy with which the listener perceives the spatial location of the sound source after rendering. A high-quality binaural rendering system should enable the listener to accurately perceive the expected location of the sound source and have good ability to distinguish between front and back directions. It is worth mentioning that the corresponding evaluation points are: horizontal plane (azimuth angle) localization accuracy and stability: the smaller the deviation between the perceived azimuth angle of the sound source and the expected one, and the less obvious the drift or jitter of the perceived position, the higher the score; vertical plane (elevation angle) localization accuracy and stability: the smaller the deviation between the perceived elevation angle of the sound source and the expected one, and the less obvious the drift or jitter of the perceived position, the higher the score; distance localization accuracy and stability: distance perception accuracy and stability: the consistency between the perceived distance of the sound source and the expected one, and the stable perceived distance without drift. Front and back direction discrimination ability: the accuracy of distinguishing between sound sources in front and behind on the mid-vertical plane, and the less confusion between front and back, the higher the score.

[0036] Sound source motion continuity refers to the listener's perception of the continuity and smoothness of the moving sound source's spatial trajectory. This dimension evaluates content containing sound source motion (such as a scene scanned from left to right), focusing on whether jumps, breaks, or jittering / drifting occur during the motion. The corresponding evaluation points are: whether the sound source's motion trajectory is continuous and smooth, without obvious jumps or breaks; and whether the sound source's motion trajectory is consistent with the expected trajectory, without obvious deviations or sudden reversals.

[0037] Sound source motion uniformity evaluates the uniformity of the perceived speed of a moving sound source under uniform motion conditions. Unlike motion continuity, this dimension focuses on the degree of speed fluctuation perceived in the expected motion scenario. The corresponding evaluation points are: consistency of perceived speed in the motion scenario; whether there are sudden changes in speed during the motion.

[0038] Spatial immersion is defined as the listener's overall perception of the spatial sense presented by a binaural rendering system, including spatial enclosure, perceived size of the space, and degree of sound source externalization. Specifically, spatial immersion comprehensively reflects the overall performance of the binaural rendering system in presenting a complete space. The corresponding evaluation points are: the degree to which the listener feels surrounded by sound from all directions; the listener's perception of the size and type of the sound field (e.g., living room, bathroom, concert hall); and the degree of sound source externalization: the extent to which the sound source is perceived as being outside the head, and whether the in-head effect exists.

[0039] Specifically, the binaural audio test signal obtained after processing the signal source by the binaural rendering system can include: binaural audio test signals generated by the binaural rendering system, including static sound source test signals, moving sound source test signals, and scene test signals for various spatial acoustic environment scenarios; the spatial acoustic environment scenarios include a living room, bathroom, and concert hall; wherein, the static sound source test signal is used to evaluate the accuracy and stability of horizontal azimuth angle, vertical elevation angle, and distance positioning, and is also used to evaluate the ability to distinguish the front and rear directions of sound sources in front and behind on the vertical plane; the moving sound source test signal is used to evaluate whether the sound source motion trajectory is... The motion source test signals include sound sources moving at a constant speed in a horizontal direction, a constant speed in a vertical direction, and a constant speed along a circular trajectory. The motion source test signals are used to evaluate the consistency of perceived motion speed under the preset constant speed motion conditions and whether there are sudden changes in speed. Scene test signals for various spatial acoustic environment scenarios are used to evaluate the sense of immersion of sound from all directions, the ability to perceive the size and type of the sound field space, and the degree to which the sound source is perceived as being located outside the head.

[0040] Step S12: Send the binaural audio test signal to the reference monitoring headphones worn by the listener in advance, so that the binaural audio test signal can be played back through the reference monitoring headphones.

[0041] In this embodiment, the present application includes a playback system. In one specific implementation, the headphones are required to be high-fidelity reference monitoring headphones with a flat frequency response. That is, within the tolerance range specified in ITU-R BS.1116, the total harmonic distortion should not exceed 0.1% at 1 kHz and 94 dB SPL to ensure the accurate transmission of spatial perception cues. The recommended headphone model is recorded and acoustic calibration is performed.

[0042] Furthermore, the test environment (refer to ITU-R BS.1116) is as follows: continuous background noise (generated by an air conditioning system, internal equipment, or other external source) measured at the nominal seated ear height in the listening area should preferably not exceed NR10, and in any case, the background noise should not exceed NR15. In terms of noise characteristics, the background noise should not be perceptible in terms of pulsation, periodicity, or pitch.

[0043] Specifically, the reference monitoring headphones are reference monitoring headphones that meet preset high-fidelity conditions; the frequency of the reference monitoring headphones remains flat within the preset tolerance range corresponding to ITU-R BS.1116; under preset frequency and sound pressure level conditions, the total harmonic distortion of the reference monitoring headphones is not greater than the preset distortion threshold.

[0044] Subsequently, in this embodiment of the application, the binaural audio test signal needs to be sent to a reference monitoring headphone worn by the listener in advance, so that the binaural audio test signal can be played back through the reference monitoring headphone. This can include: recording the headphone model corresponding to the reference monitoring headphone, performing acoustic calibration on each reference monitoring headphone, and setting the calibrated headphone as the target headphone; sending the binaural audio test signal to the target headphone worn by the listener in advance, and playing back the binaural audio test signal to the listener through the target headphone; the listener is in a test environment that meets the requirements of ITU-R BS.1116; the continuous background noise corresponding to the binaural audio test signal obtained at the ear height of the listener in a preset sitting posture is not greater than a preset noise threshold; the continuous background noise does not have pulsation, periodicity, or pitch characteristics.

[0045] Step S13: During the process of the reference monitoring headphones playing back the binaural audio test signal, receive the sound source localization accuracy score, sound source motion continuity score, sound source motion uniformity score, and spatial immersion score collected through the preset information input interface.

[0046] In this embodiment, the accuracy of sound source localization needs to be evaluated, and the recommended method for this evaluation is a double-blind, three-excitation hidden reference (refer to ITU-R BS.1116). The sound source localization accuracy dimension is suitable for evaluating subtle differences in HRTF processing accuracy and localization algorithm accuracy in high-quality binaural rendering systems. Impairments in this dimension are often quite subtle (such as slight front-back confusion or elevation deviation), and the double-blind, three-excitation hidden reference method, specifically designed for subtle impairments, should be preferred.

[0047] In this embodiment, a 5-level damage assessment scale is used, and the scale is described below: 5—Accurate positioning, consistent with the reference, with no directional deviation; 4—Slight positioning deviation, but does not affect overall perception; 3—Obvious positioning deviation or occasional confusion between front and back; 2—Severe positioning inaccuracies, with frequent confusion between preceding and following locations; 1 — Complete loss of spatial awareness; the direction of the sound source is indistinguishable.

[0048] Specifically, before receiving the sound source localization accuracy score collected through the preset information input interface, the process may further include: determining the evaluation purpose; if the evaluation purpose is to locate the first impairment of sound source localization corresponding to each binaural audio test signal, then the static sound source test signal is localized using the double-blind three-excitation hidden reference method and based on the first impairment evaluation scale, and the sound source localization result is scored to obtain the corresponding sound source localization accuracy score; the first impairment is an impairment that meets the first preset subtle condition.

[0049] Furthermore, the first damage assessment scale includes, from front to back, level 1 damage, level 2 damage, level 3 damage, level 4 damage, and level 5 damage; level 1 damage is damage where the location is consistent with the reference and there is no directional deviation; level 2 damage is damage where there is a location deviation that meets preset minor conditions; level 3 damage is damage where there is a location deviation that meets preset significant conditions or where confusion occurs a first preset number of times; level 4 damage is damage where there is a location inaccuracy that meets preset severe conditions and where confusion occurs a second preset number of times frequently; level 5 damage is damage where there is a loss of location sense and the direction of the sound source cannot be identified; the first preset number is less than the second preset number.

[0050] In addition, the embodiments of this application also include an alternative method: the MUSHRA method (refer to ITU-R BS.1534): when the evaluation purpose is to compare the positioning accuracy performance of multiple binaural rendering systems laterally, or when the damage to the system under test is large, the MUSHRA method can be used to efficiently compare the positioning performance differences of multiple systems in a single test.

[0051] In one specific implementation, the scale description intervals are referenced as follows: 80–100: Accurate positioning, consistent with reference perception, and the direction of the sound source is clearly identifiable; 60–80: The positioning is basically accurate, with slight directional deviations that can be detected but do not affect the user experience; 40–60: There is a significant deviation in positioning, with occasional confusion between the preceding and following periods, but it is still acceptable; 20–40: Frequent positioning inaccuracies and confusion between front and back views affect spatial perception; 0–20: Extremely poor localization ability, completely chaotic sound source direction, no sense of direction.

[0052] Specifically, before receiving the sound source localization accuracy score collected through the preset information input interface, the process may further include, if the evaluation purpose is to locate the second impairment of sound source localization corresponding to each binaural audio test signal or to compare the localization accuracy performance of each binaural rendering processing system, then when comparing the degree of impairment between each binaural rendering system, the MUSHRA method is used and the first continuous quality scale corresponding to ITU-R BS.1534 is used to perform sound source localization on the static sound source test signal, and the sound source localization accuracy score is determined based on the sound source localization result; the second impairment is the impairment that meets the first preset obvious condition.

[0053] The first continuous quality scale, from high to low, includes the following levels of sound source localization quality: Level 1, Level 2, Level 3, Level 4, and Level 5. Level 1 sound source localization quality is when the localization is consistent with the reference and the sound source direction meets the preset condition of clear and discernible location. Level 2 sound source localization quality is when there is a localization deviation that meets the preset slight condition. Level 3 sound source localization quality is when there is a localization deviation that meets the preset significant condition or when there is a third preset number of instances of confusion. Level 4 sound source localization quality is when there is localization inaccuracy that meets the preset poor condition and when there is a fourth preset number of instances of frequent confusion, which affects spatial perception. Level 5 sound source localization quality is when there is localization inaccuracy that meets the preset severe condition and when the sound source direction meets the preset chaotic condition, resulting in a lack of directionality. The third preset number of instances is less than the fourth preset number of instances.

[0054] In this embodiment, the recommended method for evaluating the continuity of sound source motion is the MUSHRA method (refer to ITU-RBS.1534). The continuity dimension of sound source motion involves the overall perception of the motion process. The degree of damage varies greatly depending on the system (from slight stagnation to complete breakage). It is suitable to use the MUSHRA multi-excitation comparison framework for evaluation, which can compare the motion continuity performance of multiple systems in a single test.

[0055] Furthermore, this application embodiment uses a 0-100 continuous mass scale, and the scale description interval is shown below: 80–100: The motion is continuous and smooth, consistent with the reference perception; 60–80: Slight stuttering or inconsistency, perceptible but not significantly affecting the experience; 40–60: Noticeable stuttering, with occasional jumpiness; 20–40: Frequent jumping or significant distortion in motion trajectory perception; 0–20: Severe fracture, extremely poor motion continuity.

[0056] Specifically, before receiving the sound source motion continuity score acquired through the preset information input interface, the process may further include: if the evaluation purpose is to assess the third impairment of the sound source motion continuity corresponding to each binaural audio test signal, then the motion continuity of the motion scene in the motion sound source test signal is judged using the MUSHRA method and based on the second continuity quality scale corresponding to ITU-R BS.1534, and the motion continuity judgment result is obtained. Then, the corresponding sound source motion continuity score is generated based on the motion continuity judgment result. The third impairment is the impairment determined based on the system type of the binaural rendering processing system. The third impairment includes stuttering impairment, partial functional abnormality impairment, and complete signal breakage impairment that meet the preset slight conditions.

[0057] The second continuous quality scale, from high to low, includes five levels of motion continuity quality: Level 1, Level 2, Level 3, Level 4, and Level 5. Level 1 motion continuity quality means the motion speed of the motion source test signal is continuous and consistent with the perception of ideal motion. Level 2 motion continuity quality means motion fluctuations that meet preset slight conditions occur. Level 3 motion continuity quality means motion fluctuations that meet preset obvious conditions occur and speed fluctuations occur at a first preset frequency. Level 4 motion continuity quality means motion fluctuations that occur at a second preset frequency and the perception meets preset discontinuity conditions. Level 5 motion continuity quality means the motion fluctuations meet preset severe fluctuation conditions and the motion continuity meets preset severe motion conditions.

[0058] Furthermore, the corresponding alternative method is: double-blind triple-excitation hidden reference test (refer to ITU-R BS.1116). That is, when the evaluation purpose is to examine subtle differences in motion continuity of high-quality binaural rendering systems, or when the differences between systems are small, the BS.1116 method can be used to conduct fine identification by expert listeners.

[0059] In this embodiment, a 5-level damage assessment scale is used: 5—The motion trajectory is continuous and smooth, consistent with the reference, and without any sense of interruption; 4—Very slight stuttering or discontinuity may be detected, but it does not affect the overall motion perception; 3—The movement trajectory has obvious pauses or occasional jumps, but the overall trajectory is still recognizable; 2—Frequent breaks or jumps in the movement trajectory make trajectory perception difficult; 1—The motion trajectory is completely broken, and continuous motion cannot be perceived.

[0060] Specifically, before receiving the sound source motion continuity score acquired through the preset information input interface, the process may further include: if the evaluation purpose is to assess the fourth impairment corresponding to the motion continuity of each binaural audio test signal, then the trajectory continuity of the motion sound source test signal is judged using the double-blind three-excitation hidden reference method and based on the second impairment evaluation scale corresponding to ITU-R BS.1116, and the trajectory continuity judgment result is obtained; the fourth impairment is an impairment that meets the second preset subtle condition; the consistency of the motion sound source test signal is judged using the third impairment evaluation scale, and the consistency judgment result is obtained; and the first judgment result to be processed is determined based on the trajectory continuity judgment result and the consistency judgment result; then the sound source motion continuity score is determined based on the first judgment result to be processed.

[0061] The second injury assessment scale, from high to low, includes five levels of continuous injury: Level 1, Level 2, Level 3, Level 4, and Level 5. Level 1 continuous injury is defined as the motion trajectory corresponding to the motion source test signal meeting a preset continuous smooth condition, and the motion source test signal being consistent with the reference signal. Level 2 continuous injury is defined as the motion source test signal experiencing a pause that meets preset perceptible and slight conditions. Level 3 continuous injury is defined as the motion trajectory of the motion source test signal experiencing a pause or jump that meets preset obvious conditions, and the motion trajectory meeting preset identification conditions. Level 4 continuous injury is defined as the motion trajectory of the motion source test signal experiencing a break or jump that meets preset frequent conditions, and the motion trajectory having the ability to perceive motion under preset difficult conditions. Level 5 continuous injury is defined as the motion trajectory of the motion source test signal being completely broken and lacking the ability to perceive continuous motion.

[0062] In this embodiment, the recommended method for evaluating the uniformity of sound source motion is the MUSHRA method (refer to ITU-RBS.1534). Since the uniformity dimension of sound source motion is suitable for the MUSHRA framework, it focuses on evaluating the perceived uniformity of velocity under the expectation of uniform motion, and the test design is carried out in accordance with the MUSHRA framework in section 5.2. The scale description intervals are shown below for reference: 80–100: The motion speed is uniform, consistent with the ideal uniform motion reference perception, with no obvious fluctuations; 60–80: Slight speed fluctuations can be detected, but they do not affect the overall perception of uniformity; 40–60: Noticeable speed fluctuations, with occasional sensations of being fast or slow, but barely acceptable; 20–40: The speed fluctuates frequently, resulting in noticeably uneven perception and affecting the user experience; 0–20: The speed is extremely uneven, completely losing the characteristics of uniform motion.

[0063] Specifically, if the evaluation objective is to assess the uniformity of speed perceived by each binaural audio test signal under a preset uniform motion expectation, then the MUSHRA method is used and the third continuous mass scale corresponding to ITU-R BS.1534 is used to judge the uniform motion scene in the moving sound source test signal to obtain the speed uniformity judgment result, and then the corresponding sound source motion uniformity score is generated based on the speed uniformity judgment result.

[0064] The third continuous quality scale, from high to low, includes five levels of speed uniformity quality: Level 1, Level 2, Level 3, Level 4, and Level 5. Level 1 speed uniformity quality indicates that the motion speed of the sound source test signal is uniform and consistent with the perception of ideal uniform motion. Level 2 speed uniformity quality indicates that speed fluctuations occur under preset slight conditions. Level 3 speed uniformity quality indicates that speed fluctuations occur under preset obvious conditions and occur at a first preset frequency. Level 4 speed uniformity quality indicates that speed fluctuations occur at a second preset frequency and the perception meets preset non-uniformity conditions. Level 5 speed uniformity quality indicates that speed fluctuations meet preset non-uniformity conditions and lose the characteristics of uniform motion.

[0065] Furthermore, the corresponding alternative method is: double-blind triple-excitation hidden reference (refer to ITU-R BS.1116): when the evaluation purpose is to examine subtle differences in motion uniformity of a high-quality system, the BS.1116 method can be used, and the above method is suitable for scenarios where the overall quality of the system under test is high and the velocity fluctuation damage is subtle.

[0066] Furthermore, the above method uses a 5-level damage assessment scale: 5—The speed is completely uniform, consistent with the reference, and there is no sense of speed fluctuation; 4—A very slight difference in speed can be detected, but it does not affect the overall perception of uniform speed; 3—The speed of movement fluctuates significantly, and it can be perceived as sometimes fast and sometimes slow; 2—The speed fluctuates frequently, and the sense of uniform speed is significantly impaired; 1—The speed is extremely uneven, and the characteristics of uniform motion are completely imperceptible.

[0067] Specifically, before receiving the sound source motion uniformity score acquired through the preset information input interface, the process may further include: if the evaluation purpose is to evaluate the fifth impairment corresponding to the motion uniformity of each binaural audio test signal, then the uniform motion uniformity score of the motion sound source test signal is performed using the double-blind three-excitation hidden reference method and based on the third impairment evaluation scale corresponding to ITU-R BS.1116, to obtain the sound source motion uniformity score result; the fifth impairment is an impairment that satisfies the third preset subtle condition.

[0068] The third damage assessment scale, from high to low, includes five levels of homogeneity damage: Level 1 homogeneity damage, Level 2 homogeneity damage, Level 3 homogeneity damage, Level 4 homogeneity damage, and Level 5 homogeneity damage. Level 1 homogeneity damage is defined as the velocity homogeneity of the moving sound source test signal meeting a preset homogeneity condition, and the velocity homogeneity of the moving sound source test signal being consistent with the reference signal. Level 2 homogeneity damage is defined as the velocity homogeneity of the moving sound source test signal experiencing a pause that meets a preset perceptible and slight condition. Level 3 homogeneity damage is defined as the velocity of the moving sound source test signal experiencing fluctuations that meet a preset obvious condition, and the perceived velocity homogeneity meeting a preset obvious fluctuation condition. Level 4 homogeneity damage is defined as the velocity of the moving sound source test signal experiencing fluctuations that meet a preset frequent condition, and the perceived velocity homogeneity meeting a preset difficult condition. Level 5 homogeneity damage is defined as the velocity of the moving sound source test signal meeting a preset severe non-uniformity condition and lacking the perceptible uniform motion characteristic.

[0069] In this embodiment, the recommended method for evaluating spatial immersion is the multiple comparison method (refer to ITU-RBS.1284). The spatial immersion dimension includes multiple evaluation points (spatial enclosure, spatial size perception, degree of sound source externalization, etc.), making it suitable for comprehensive multi-attribute evaluation using the multiple comparison method. It is worth noting that this method allows listeners to directly compare multiple systems under test and independently score each sub-attribute, making it suitable for complex evaluation scenarios involving multi-dimensional perception, such as spatial immersion.

[0070] Furthermore, the reference intervals for the above scale descriptions are shown below: 5—Excellent immersion, strong sense of envelopment, complete externalization of sound sources, natural sense of space, and clear perception of environmental atmosphere; 4—Good immersion, slight head-in-the-head effect or insufficient sense of envelopment, but good overall sense of space; 3—Medium immersion, with some head-on effect, limited sense of space, and insufficient sense of immersion; 2—Poor immersion, pronounced head-on effect, lack of spatial immersion, and blurred environmental perception; 1 — Extremely poor immersion, strong head-on effect, no sense of space, and complete loss of immersive experience.

[0071] Specifically, before receiving the spatial immersion score collected through a preset information input interface, the process may further include: using a multiple comparison method and based on the fourth damage assessment scale corresponding to ITU-R BS.1284 to determine the sense of enclosure for each scene test signal, and obtaining the sense of enclosure judgment result; using the fourth damage assessment scale to determine the spatial size for each scene test signal, and obtaining the spatial size judgment result; then using the fourth damage assessment scale to determine the spatial type for each scene test signal, and obtaining the spatial type judgment result; using the fourth damage assessment scale to determine the degree of externalization for each scene test signal, and obtaining the corresponding degree of externalization judgment result; and generating a second judgment result to be processed based on the sense of enclosure judgment result, the spatial size judgment result, the spatial type judgment result, and the degree of externalization judgment result; and determining the corresponding spatial immersion score based on the second judgment result to be processed.

[0072] The fourth injury assessment scale, from high to low, includes five levels of immersion impairment: Level 1, Level 2, Level 3, Level 4, and Level 5. Level 1 immersion impairment means that the immersion, sense of envelopment, externalization of sound sources, spatial perception, and environmental atmosphere of the moving sound source test signal all meet the preset qualified conditions. Level 2 immersion impairment means that the immersion of the scene test signal meets the preset good condition, the sense of envelopment meets the preset slight condition, and the spatial perception meets the preset good condition. Level 3 immersion impairment means that the scene test signal has a head-in-the-head effect, the spatial perception meets the preset moderate condition, and the sense of envelopment meets the preset insufficient condition. Level 4 immersion impairment means that the immersion of the scene test signal meets the preset poor condition, the head-in-the-head effect meets the preset obvious condition, the spatial envelopment meets the preset lack condition, and environmental perception meets the preset ambiguous condition. Level 5 immersion impairment means that the immersion of the scene test signal meets the preset severe condition, the head-in-the-head effect meets the preset strong condition, and there is no spatial perception or immersive experience.

[0073] Step S14: Based on the sound source localization accuracy score, the sound source motion continuity score, the sound source motion uniformity score, and the spatial immersion score, determine the spatial perception quality corresponding to the binaural rendering system; wherein, the sound source localization accuracy score is the score obtained by the listener after judging the localization accuracy of the static sound source test signal; the sound source motion continuity score is the score obtained by the listener after judging the speed continuity of the motion scene in the motion sound source test signal; the sound source motion uniformity score is the score obtained by the listener after judging the speed uniformity of the motion scene in the motion sound source test signal; and the spatial immersion score is the score obtained by the listener after judging the sense of enclosure, spatial size and type, and externalization degree of each scene test signal.

[0074] In this embodiment, the present application requires determining the spatial perception quality of the binaural rendering system based on sound source localization accuracy score, sound source motion continuity score, sound source motion uniformity score, and spatial immersion score. Specifically, this may include: determining the weights corresponding to the sound source localization accuracy score, sound source motion continuity score, sound source motion uniformity score, and spatial immersion score based on the application scenario of the binaural rendering system; performing weighted processing on the sound source localization accuracy score, sound source motion continuity score, sound source motion uniformity score, and spatial immersion score based on each weight to obtain the spatial perception quality; comparing the spatial perception quality with the reference evaluation result of the reference system to obtain the performance comparison result; and determining the performance of the binaural rendering system based on the performance comparison result.

[0075] As can be seen from the above, the embodiments of this application first need to obtain the binaural audio test signal after the binaural rendering processing system processes the signal source; secondly, the binaural audio test signal is sent to a reference monitoring headset worn by the listener in advance, so that the binaural audio test signal can be played back through the reference monitoring headset; then, during the playback of the binaural audio test signal through the reference monitoring headset, the sound source localization accuracy score, sound source motion continuity score, sound source motion uniformity score, and spatial immersion score are received through a preset information input interface; finally, based on the sound source localization accuracy score, sound source motion continuity score, sound source motion uniformity score, and spatial immersion score, the spatial perception quality corresponding to the binaural rendering system is determined. In this way, the efficiency of testing the spatial perception quality of the binaural rendering processing system is improved during the spatial perception quality testing process, thereby enhancing the user experience.

[0076] Accordingly, see Figure 2 As shown, this application also provides a spatial perception quality testing device for a binaural rendering processing system, comprising: The binaural audio test signal acquisition module 11 is used to acquire binaural audio test signals obtained after the binaural rendering processing system processes the signal source; the binaural audio test signals include static sound source test signals, moving sound source test signals and scene test signals of various spatial acoustic environment scenarios; The test signal transmission module 12 is used to send the binaural audio test signal to a reference monitoring earphone worn by the listener in advance, so that the binaural audio test signal can be played back through the reference monitoring earphone; The scoring receiving module 13 is used to receive, during the process of the reference monitoring headphones playing back the binaural audio test signal, the sound source localization accuracy score, the sound source motion continuity score, the sound source motion uniformity score, and the spatial immersion score collected through the preset information input interface. The spatial perception quality generation module 14 is used to determine the spatial perception quality corresponding to the binaural rendering system based on the sound source localization accuracy score, the sound source motion continuity score, the sound source motion uniformity score, and the spatial immersion score. The sound source localization accuracy score is obtained by the listener after judging the localization accuracy of the static sound source test signal; the sound source motion continuity score is obtained by the listener after judging the speed uniformity of the motion scene in the moving sound source test signal; the sound source motion uniformity score is obtained by the listener after judging the speed uniformity of the uniform motion scene in the moving sound source test signal; and the spatial immersion score is obtained by the listener after judging the sense of enclosure, spatial size and type, and externalization degree of each scene test signal.

[0077] In some specific embodiments, the binaural audio test signal acquisition module 11 may specifically include: A binaural audio test signal generation subunit is used to acquire binaural audio test signals obtained after the binaural rendering processing system processes the signal source. These signals include static sound source test signals, moving sound source test signals, and scene test signals for various spatial acoustic environment scenarios. The spatial acoustic environment scenarios include a living room, a bathroom, and a concert hall. The static sound source test signals are used to evaluate the accuracy and stability of horizontal azimuth, vertical elevation, and distance positioning, and to evaluate the ability to distinguish the forward and backward directions of sound sources in front and behind on the mid-vertical plane. The moving sound source test signals are used to evaluate whether the sound source's trajectory is continuous, smooth, and without jumps. The test signals for the motion sound source include those that are moving at a constant speed in a horizontal direction, in a constant speed in a vertical direction, and in a constant speed along a circular trajectory. The motion sound source test signals are used to evaluate the consistency of the perceived motion speed under the preset constant speed motion conditions and whether there are sudden changes in speed. The scene test signals for each spatial acoustic environment scenario are used to evaluate the sense of envelopment of sound from all directions, the ability to perceive the size and type of the sound field space, and the degree to which the sound source is perceived as being located outside the head.

[0078] In some specific embodiments, the test signal transmitting module 12 may specifically include: The target earphone determination unit is used to record the earphone model corresponding to the reference monitoring earphone, perform acoustic calibration on each of the reference monitoring earphones, and set the calibrated earphones as the target earphones; A test signal transmitting unit is used to transmit the binaural audio test signal to the target earphone worn by the listener in advance, and to play back the binaural audio test signal to the listener using the target earphone; the listener is in a test environment that meets the requirements of ITU-R BS.1116; the continuous background noise corresponding to the binaural audio test signal obtained by the listener at the ear height in a preset sitting posture is not greater than a preset noise threshold; the continuous background noise does not have pulsation, periodicity and pitch characteristics.

[0079] In some specific embodiments, the spatial perception quality testing device of the binaural rendering processing system may further include: The assessment objective determination unit is used to determine the assessment objective. The first sound source localization accuracy score generation unit is used to perform sound source localization on the static sound source test signal using a double-blind three-excitation hidden reference method and based on a first damage evaluation scale if the evaluation purpose is to locate the first damage to the sound source localization corresponding to each of the binaural audio test signals, and to score the sound source localization result to obtain the corresponding sound source localization accuracy score; the first damage is a damage that satisfies a first preset subtle condition.

[0080] In some specific embodiments, the spatial perception quality testing device of the binaural rendering processing system may further include: The second sound source localization accuracy score generation unit is used to perform sound source localization on the static sound source test signal using the MUSHRA method and based on the first continuous quality scale corresponding to ITU-R BS.1534 when comparing the degree of damage between the two binaural rendering systems if the evaluation purpose is to locate the second impairment of the sound source localization corresponding to each binaural audio test signal or to compare the localization accuracy performance of each binaural rendering system laterally. The second impairment is the impairment that meets the first preset obvious condition.

[0081] In some specific embodiments, the spatial perception quality testing device of the binaural rendering processing system may further include: The first sound source motion continuity score generation unit is used to, if the evaluation purpose is to evaluate the third impairment of the motion continuity of the sound source corresponding to each of the binaural audio test signals, use the MUSHRA method and the second continuity quality scale corresponding to ITU-R BS.1534 to judge the motion continuity of the motion scene in the motion sound source test signal, obtain the motion continuity judgment result, and then generate the corresponding sound source motion continuity score based on the motion continuity judgment result; the third impairment is the impairment determined based on the system type of the binaural rendering processing system; the third impairment includes stuttering impairment, partial functional abnormality impairment, and complete signal breakage impairment that meet the preset slight conditions.

[0082] In some specific embodiments, the spatial perception quality testing device of the binaural rendering processing system may further include: The trajectory continuity judgment result generation unit is used to determine the trajectory continuity of the motion source test signal by using the double-blind three-excitation hidden reference method and based on the second damage evaluation scale corresponding to ITU-R BS.1116 if the evaluation purpose is to evaluate the fourth damage corresponding to the motion continuity of each of the binaural audio test signals, and obtain the trajectory continuity judgment result; the fourth damage is the damage that satisfies the second preset subtle condition. The consistency judgment result generation unit is used to perform consistency judgment on the motion sound source test signal using the third damage evaluation scale, obtain a consistency judgment result, determine a first judgment result to be processed based on the trajectory continuity judgment result and the consistency judgment result, and then determine the sound source motion continuity score based on the first judgment result to be processed.

[0083] In some specific embodiments, the spatial perception quality testing device of the binaural rendering processing system may further include: The speed uniformity judgment result generation unit is used to evaluate the speed uniformity perceived by each of the binaural audio test signals under a preset uniform motion expectation condition if the evaluation purpose is to evaluate the speed uniformity of each of the binaural audio test signals. Then, it uses the MUSHRA method and the third continuous mass scale corresponding to ITU-RBS.1534 to judge the speed uniformity of the uniform motion scene in the motion sound source test signal, obtains the speed uniformity judgment result, and then generates the corresponding sound source motion uniformity score based on the speed uniformity judgment result.

[0084] In some specific embodiments, the spatial perception quality testing device of the binaural rendering processing system may further include: The sound source motion uniformity scoring unit is used to score the uniform motion uniformity of the motion scene in the motion sound source test signal using a double-blind three-excitation hidden reference method and based on the third damage assessment scale corresponding to ITU-R BS.1116 if the evaluation purpose is to evaluate the fifth damage corresponding to the motion uniformity of each of the binaural audio test signals. The fifth damage is the damage that satisfies the third preset subtle condition.

[0085] In some specific embodiments, the spatial perception quality testing device of the binaural rendering processing system may further include: The surround sense judgment result generation unit is used to perform surround sense judgment on the test signals of each scenario using the multiple comparison method and based on the fourth damage assessment scale corresponding to ITU-R BS.1284, and obtain surround sense judgment results. The spatial type judgment result generation unit is used to use the fourth damage evaluation scale to judge the spatial size of each scene test signal, obtain the spatial size judgment result, and then use the fourth damage evaluation scale to judge the spatial type of each scene test signal, obtain the spatial type judgment result. The externalization degree judgment result generation unit is used to use the fourth damage evaluation scale to judge the externalization degree of each scene test signal, obtain the corresponding externalization degree judgment result, and generate a second judgment result to be processed based on the envelopment judgment result, the space size judgment result, the space type judgment result and the externalization degree judgment result; The spatial immersion score is determined based on the second judgment result to be processed.

[0086] In some specific embodiments, the spatial perception quality generation module 14 may specifically include: The weight determination unit is used to determine the weights corresponding to the sound source localization accuracy score, the sound source motion continuity score, the sound source motion uniformity score, and the spatial immersion score, respectively, based on the application scenario of the binaural rendering system. The performance comparison result generation unit is used to perform weighted processing on the sound source localization accuracy score, the sound source motion continuity score, the sound source motion uniformity score and the spatial immersion score based on each of the weights to obtain spatial perception quality, and compare the spatial perception quality with the reference evaluation result of the reference system to obtain performance comparison result, so as to determine the performance of the binaural rendering system based on the performance comparison result.

[0087] Furthermore, embodiments of this application also disclose an electronic device, Figure 3 This is a structural diagram of an electronic device 20 according to an exemplary embodiment. The content of the diagram should not be construed as limiting the scope of this application. The electronic device 20 may specifically include: at least one processor 21, at least one memory 22, a power supply 23, a communication interface 24, an input / output interface 25, and a communication bus 26. The memory 22 stores a computer program, which is loaded and executed by the processor 21 to implement the relevant steps in the spatial perception quality testing method of the binaural rendering processing system disclosed in any of the foregoing embodiments. Furthermore, the electronic device 20 in this embodiment may specifically be a computer.

[0088] In this embodiment, the power supply 23 is used to provide operating voltage for each hardware device on the electronic device 20; the communication interface 24 can create a data transmission channel between the electronic device 20 and external devices, and the communication protocol it follows can be any communication protocol applicable to the technical solution of this application, and is not specifically limited here; the input / output interface 25 is used to acquire external input data or output data to the outside world, and its specific interface type can be selected according to specific application needs, and is not specifically limited here.

[0089] In addition, the memory 22, as a carrier for resource storage, can be a read-only memory, random access memory, disk or optical disk, etc. The resources stored thereon can include operating system 221, computer program 222, etc., and the storage method can be temporary storage or permanent storage.

[0090] The operating system 221 is used to manage and control the various hardware devices on the electronic device 20 and the computer program 222, which may be Windows Server, Netware, Unix, Linux, etc. In addition to including a computer program capable of performing the spatial perception quality testing method of the binaural rendering processing system executed by the electronic device 20 as disclosed in any of the foregoing embodiments, the computer program 222 may further include computer programs capable of performing other specific tasks.

[0091] Furthermore, this application also discloses a computer-readable storage medium for storing a computer program; wherein, when the computer program is executed by a processor, it implements the spatial perception quality testing method of the aforementioned binaural rendering processing system. Specific steps of this method can be found in the corresponding content disclosed in the foregoing embodiments, and will not be repeated here.

[0092] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.

[0093] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0094] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0095] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0096] The technical solutions provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for testing the spatial perception quality of a binaural rendering system, characterized in that, include: After the signal source is processed by the binaural rendering system, a binaural audio test signal is obtained. The binaural audio test signals include static sound source test signals, moving sound source test signals, and scene test signals for various spatial acoustic environment scenarios; The binaural audio test signal is sent to a reference monitoring headset worn by the listener in advance, so that the binaural audio test signal can be played back through the reference monitoring headset; During the playback of the binaural audio test signal by the reference monitoring headphones, the sound source localization accuracy score, sound source motion continuity score, sound source motion uniformity score, and spatial immersion score are received through a preset information input interface. Based on the sound source localization accuracy score, the sound source motion continuity score, the sound source motion uniformity score, and the spatial immersion score, the spatial perception quality corresponding to the binaural rendering system is determined. The sound source localization accuracy score is the score obtained by the listener after judging the localization accuracy of the static sound source test signal; the sound source motion continuity score is the score obtained by the listener after judging the speed continuity of the motion scene in the moving sound source test signal; the sound source motion uniformity score is the score obtained by the listener after judging the speed uniformity of the uniform motion scene in the moving sound source test signal; and the spatial immersion score is the score obtained by the listener after judging the sense of enclosure, spatial size and type, and externalization degree of each scene test signal.

2. The spatial perception quality testing method for the binaural rendering processing system according to claim 1, characterized in that, The acquisition of binaural audio test signals after the binaural rendering processing system processes the signal source includes: The binaural audio test signal is obtained after the signal source is processed by the binaural rendering processing system. It includes static sound source test signal, moving sound source test signal and scene test signal of various spatial acoustic environment scenes. The spatial acoustic environment scenes include living room, bathroom and concert hall. The static sound source test signal is used to evaluate the accuracy and stability of horizontal azimuth, vertical elevation and distance positioning, and to evaluate the ability to distinguish the front and rear directions of sound sources in front and behind on the vertical plane. The motion sound source test signal is used to evaluate whether the motion trajectory of the sound source is continuous and smooth, without jumps or breaks, and whether the motion trajectory is consistent with the preset trajectory, without deviation or sudden reversal; the motion sound source test signal includes sound sources that move at a constant speed in a straight line along the horizontal direction, move at a constant speed in a straight line along the vertical direction, and move at a constant speed along a circular trajectory. The motion sound source test signal is used to evaluate the consistency of the perceived motion speed under preset uniform motion conditions and whether there is a phenomenon of sudden speed changes. The scene test signals of each spatial acoustic environment scenario are used to evaluate the sense of immersion of sound from all directions, the ability to perceive the size and type of the sound field space, and the degree to which the sound source is perceived as being externalized outside the head.

3. The spatial perception quality testing method for the binaural rendering processing system according to claim 1, characterized in that, The reference monitoring earphone is a reference monitoring earphone that meets preset high-fidelity conditions; the frequency of the reference monitoring earphone remains flat within the preset tolerance range corresponding to ITU-R BS.1116; Under preset frequency and sound pressure level conditions, the total harmonic distortion of the reference monitoring headphones is not greater than a preset distortion threshold.

4. The spatial perception quality testing method for the binaural rendering processing system according to claim 1, characterized in that, The step of sending the binaural audio test signal to a reference monitoring headset pre-worn by the listener, so as to play back the binaural audio test signal through the reference monitoring headset, includes: Record the headphone model corresponding to the reference monitoring headphone, perform acoustic calibration on each of the reference monitoring headphones, and set the calibrated headphone as the target headphone; The binaural audio test signal is sent to the target earphone worn by the listener beforehand, and the binaural audio test signal is played back to the listener using the target earphone; the listener is in a test environment that meets the requirements of ITU-R BS.1116; the continuous background noise corresponding to the binaural audio test signal obtained at the ear height of the listener in a preset sitting posture is not greater than a preset noise threshold; the continuous background noise does not have pulsation, periodicity, or pitch characteristics.

5. The spatial perception quality testing method for the binaural rendering processing system according to claim 1, characterized in that, Before receiving the sound source localization accuracy score collected through the preset information input interface, the method further includes: Define the purpose of the assessment; If the purpose of the assessment is to locate the first damage to the sound source localization corresponding to each of the binaural audio test signals, then the static sound source test signals are localized using a double-blind three-excitation hidden reference method and based on a first damage evaluation scale, and the sound source localization results are scored to obtain the corresponding sound source localization accuracy score; the first damage is the damage that satisfies the first preset subtle condition.

6. The spatial perception quality testing method for the binaural rendering processing system according to claim 5, characterized in that, The first damage assessment scale includes, from front to back, level 1 damage, level 2 damage, level 3 damage, level 4 damage, and level 5 damage. Level 1 damage is damage where the location is consistent with the reference and there is no directional deviation. Level 2 damage is damage where there is a location deviation that meets preset minor conditions. Level 3 damage is damage where there is a location deviation that meets preset significant conditions or where there is a first preset number of instances of confusion between the preceding and following parts. Level 4 damage is damage where there is a location inaccuracy that meets preset severe conditions and where there is a second preset number of instances of frequent confusion between the preceding and following parts. The fifth level of damage is damage in which the sense of localization is lost and the direction of the sound source cannot be identified. The first preset number of times is less than the second preset number of times.

7. The spatial perception quality testing method for the binaural rendering processing system according to claim 1, characterized in that, Before receiving the sound source localization accuracy score collected through the preset information input interface, the method further includes: If the evaluation objective is to locate the second impairment of the sound source localization corresponding to each of the binaural audio test signals or to compare the localization accuracy performance of each binaural rendering system, then when comparing the degree of impairment between each binaural rendering system, the MUSHRA method is used and the first continuous quality scale corresponding to ITU-R BS.1534 is used to locate the static sound source test signal, and the sound source localization accuracy score is determined based on the sound source localization result; the second impairment is the impairment that meets the first preset obvious condition.

8. The spatial perception quality testing method for the binaural rendering processing system according to claim 7, characterized in that, The first continuous quality scale, from high to low, includes the first-level sound source localization quality, the second-level sound source localization quality, the third-level sound source localization quality, the fourth-level sound source localization quality, and the fifth-level sound source localization quality; the first-level sound source localization quality is the sound source localization quality where the localization is consistent with the reference and the sound source direction meets the preset condition of being clearly distinguishable. The second-level sound source localization quality is a sound source localization quality with a localization deviation that meets a preset slight condition; the third-level sound source localization quality is a sound source localization quality with a localization deviation that meets a preset significant condition or with a third preset number of instances of confusion between front and back; the fourth-level sound source localization quality is a sound source localization quality with a localization inaccuracy that meets a preset poor condition and with a fourth preset number of instances of frequent confusion between front and back, and the frequent confusion between front and back affects spatial perception; the fifth-level sound source localization quality is a localization inaccuracy that meets a preset severe condition and with a sound source direction that meets a preset chaotic condition, resulting in a lack of directionality; the third preset number of instances is less than the fourth preset number of instances.

9. The spatial perception quality testing method for the binaural rendering processing system according to claim 1, characterized in that, Before receiving the sound source motion continuity score acquired through the preset information input interface, the process also includes: If the evaluation objective is to assess the third impairment of the motion continuity of the sound source corresponding to each of the binaural audio test signals, then the MUSHRA method is used and the motion continuity of the motion scene in the motion sound source test signal is judged based on the second continuity quality scale corresponding to ITU-R BS.1534 to obtain the motion continuity judgment result. Then, the corresponding sound source motion continuity score is generated based on the motion continuity judgment result. The third impairment is the impairment determined based on the system type of the binaural rendering processing system. The third impairment includes stuttering impairment, partial functional abnormality impairment, and complete signal breakage impairment that meet the preset slight conditions.

10. The spatial perception quality testing method for the binaural rendering processing system according to claim 11, characterized in that, The second continuous quality scale includes, from high to low, the first level of motion continuity quality, the second level of motion continuity quality, the third level of motion continuity quality, the fourth level of motion continuity quality, and the fifth level of motion continuity quality; the first level of motion continuity quality means that the motion speed of the motion sound source test signal is continuous and consistent with the perception of ideal motion; The second level of motion continuity quality is the occurrence of motion fluctuations that meet preset slight conditions; the third level of motion continuity quality is the occurrence of motion fluctuations that meet preset obvious conditions and the occurrence of speed fluctuations at a first preset frequency; the fourth level of motion continuity quality is the occurrence of motion fluctuations at a second preset frequency and the perception of meeting preset discontinuity conditions; the fifth level of motion continuity quality is the break in motion fluctuations that meet preset severe fluctuation conditions and the motion continuity meeting preset severe motion conditions.

11. The spatial perception quality testing method for the binaural rendering processing system according to claim 1, characterized in that, Before receiving the sound source motion continuity score acquired through the preset information input interface, the process also includes: If the purpose of the assessment is to evaluate the fourth impairment corresponding to the motion continuity of each of the binaural audio test signals, then the trajectory continuity of the motion source test signal is judged using the double-blind three-excitation hidden reference method and based on the second impairment assessment scale corresponding to ITU-R BS.1116, and the trajectory continuity judgment result is obtained; the fourth impairment is an impairment that satisfies the second preset subtle condition. The consistency of the motion sound source test signal is judged using the third damage assessment scale to obtain a consistency judgment result. Based on the trajectory continuity judgment result and the consistency judgment result, a first judgment result to be processed is determined. Then, the motion continuity score of the sound source is determined based on the first judgment result to be processed.

12. The spatial perception quality testing method for the binaural rendering processing system according to claim 11, characterized in that, The second damage assessment scale includes, from high to low, the following intervals: Level 1 continuous damage, Level 2 continuous damage, Level 3 continuous damage, Level 4 continuous damage, and Level 5 continuous damage. Level 1 continuous damage is defined as the motion trajectory corresponding to the motion source test signal satisfying a preset continuous smooth condition, and the motion source test signal being consistent with the reference signal. The second level of continuity impairment is a pause in the motion sound source test signal that meets the preset conditions of being perceptible and slight. The third level of continuity impairment is when the motion trajectory of the motion source test signal experiences a pause or jump that meets a preset obvious condition and the motion trajectory meets a preset identification condition; the fourth level of continuity impairment is when the motion trajectory of the motion source test signal experiences a break or jump that meets a preset frequent condition and the motion trajectory has the ability to perceive motion that meets a preset difficult condition; the fifth level of continuity impairment is when the motion trajectory of the motion source test signal is completely broken and it does not have the ability to perceive continuous motion.

13. The spatial perception quality testing method for the binaural rendering processing system according to claim 1, characterized in that, Before receiving the sound source motion uniformity score acquired through the preset information input interface, the process also includes: If the evaluation objective is to assess the uniformity of speed perceived by each of the binaural audio test signals under a preset uniform motion expectation condition, then the MUSHRA method is used and the third continuous mass scale corresponding to ITU-R BS.1534 is used to judge the uniform motion scene in the moving sound source test signal to obtain the speed uniformity judgment result, and then the corresponding sound source motion uniformity score is generated based on the speed uniformity judgment result.

14. The spatial perception quality testing method for the binaural rendering processing system according to claim 13, characterized in that, The third continuous quality scale, from high to low, includes five levels of speed uniformity quality: Level 1, Level 2, Level 3, Level 4, and Level 5. Level 1 speed uniformity quality indicates that the motion speed of the sound source test signal is uniform and consistent with the perception of ideal uniform motion. Level 2 speed uniformity quality indicates speed fluctuations meeting preset slight conditions. Level 3 speed uniformity quality indicates speed fluctuations meeting preset obvious conditions and occurring at a first preset frequency. Level 4 speed uniformity quality indicates speed fluctuations occurring at a second preset frequency and perceptibly meeting preset non-uniformity conditions. Level 5 speed uniformity quality indicates speed fluctuations meeting preset non-uniformity conditions and losing the characteristics of uniform motion.

15. The spatial perception quality testing method for the binaural rendering processing system according to claim 1, characterized in that, Before receiving the sound source motion uniformity score acquired through the preset information input interface, the process also includes: If the evaluation objective is to assess the fifth impairment corresponding to the motion uniformity of each of the aforementioned binaural audio test signals, then the uniform motion uniformity of the motion source test signal in the motion source test signal is scored using the double-blind three-excitation hidden reference method and based on the third impairment evaluation scale corresponding to ITU-R BS.1116, and the motion uniformity score result is obtained; the fifth impairment is an impairment that satisfies the third preset subtle condition.

16. The spatial perception quality testing method for the binaural rendering processing system according to claim 15, characterized in that, The third damage assessment scale, from high to low, includes the first level of uniformity damage, the second level of uniformity damage, the third level of uniformity damage, the fourth level of uniformity damage, and the fifth level of uniformity damage. The first level of uniformity damage is defined as the velocity uniformity corresponding to the moving sound source test signal meeting a preset uniformity condition, and the velocity uniformity corresponding to the moving sound source test signal being consistent with the reference signal. The second level of uniformity impairment is a pause in the velocity uniformity of the motion sound source test signal that meets preset perceptible and slight conditions; The third level of uniformity damage is when the velocity of the motion sound source test signal fluctuates to meet a preset obvious condition and the velocity uniformity perception meets the preset obvious fluctuation condition. The fourth level of uniformity impairment is that the velocity of the moving sound source test signal fluctuates in a way that satisfies a preset frequent condition, and the velocity uniformity is perceived as meeting a preset difficult condition; the fifth level of uniformity impairment is that the velocity of the moving sound source test signal satisfies a preset severe non-uniform condition and does not have the characteristic of perceptible uniform motion.

17. The spatial perception quality testing method for the binaural rendering processing system according to claim 1, characterized in that, Before receiving the spatial immersion score collected through the preset information input interface, the process also includes: The sense of enclosure of each scenario test signal was judged by using the multiple comparison method and based on the fourth damage assessment scale corresponding to ITU-R BS.1284, and the sense of enclosure judgment results were obtained. The spatial size of each scene test signal is determined using the fourth damage assessment scale to obtain the spatial size determination result. Then, the spatial type of each scene test signal is determined using the fourth damage assessment scale to obtain the spatial type determination result. The externalization degree of each scene test signal is judged using the fourth damage assessment scale to obtain the corresponding externalization degree judgment result, and a second judgment result to be processed is generated based on the envelopment judgment result, the space size judgment result, the space type judgment result and the externalization degree judgment result; The corresponding spatial immersion score is determined based on the second judgment result to be processed.

18. The spatial perception quality testing method for the binaural rendering processing system according to claim 17, characterized in that, The fourth damage assessment scale, from high to low, includes five levels of immersion damage: Level 1 immersion damage, Level 2 immersion damage, Level 3 immersion damage, Level 4 immersion damage, and Level 5 immersion damage. Level 1 immersion damage is defined as follows: the immersion, surround effect, externalization of sound source, spatial perception, and environmental atmosphere of the moving sound source test signal all meet preset qualified conditions. Level 2 immersion damage is defined as follows: the immersion of the scene test signal meets preset good conditions, surround effect meets preset slight conditions, and spatial perception meets preset good conditions. Level 3 immersion damage is defined as follows: the scene test signal exhibits a head-in-the-head effect, spatial perception meets preset moderate conditions, and surround effect meets preset insufficient conditions. Level 4 immersion damage is defined as follows: the immersion of the scene test signal meets preset poor conditions, the head-in-the-head effect meets preset significant conditions, spatial surround effect meets preset lack conditions, and environmental perception meets preset ambiguous conditions. Level 5 immersion damage is defined as follows: the immersion of the scene test signal meets preset severe conditions, the head-in-the-head effect meets preset strong conditions, and there is no spatial perception or immersive experience.

19. The spatial perception quality testing method for the binaural rendering processing system according to claim 1, characterized in that, The determination of the spatial perception quality corresponding to the binaural rendering system based on the sound source localization accuracy score, the sound source motion continuity score, the sound source motion uniformity score, and the spatial immersion score includes: The weights corresponding to the sound source localization accuracy score, the sound source motion continuity score, the sound source motion uniformity score, and the spatial immersion score are determined based on the application scenario of the binaural rendering system. The sound source localization accuracy score, the sound source motion continuity score, the sound source motion uniformity score, and the spatial immersion score are weighted according to the weights to obtain the spatial perception quality. The spatial perception quality is then compared with the reference evaluation results of the reference system to obtain the performance comparison results. The performance of the binaural rendering system is determined based on the performance comparison results.

20. A spatial perception quality testing device for a binaural rendering processing system, characterized in that, include: The binaural audio test signal acquisition module is used to acquire the binaural audio test signal obtained after the binaural rendering processing system processes the signal source. The binaural audio test signals include static sound source test signals, moving sound source test signals, and scene test signals for various spatial acoustic environment scenarios; The test signal transmission module is used to send the binaural audio test signal to a reference monitoring headset worn by the listener in advance, so that the binaural audio test signal can be played back through the reference monitoring headset; The scoring receiving module is used to receive, during the process of the reference monitoring headphones playing back the binaural audio test signal, the sound source localization accuracy score, the sound source motion continuity score, the sound source motion uniformity score, and the spatial immersion score collected through a preset information input interface. A spatial perception quality generation module is used to determine the spatial perception quality corresponding to the binaural rendering system based on the sound source localization accuracy score, the sound source motion continuity score, the sound source motion uniformity score, and the spatial immersion score. The sound source localization accuracy score is obtained by the listener after judging the localization accuracy of the static sound source test signal; the sound source motion continuity score is obtained by the listener after judging the speed uniformity of the motion scene in the moving sound source test signal; the sound source motion uniformity score is obtained by the listener after judging the speed uniformity of the uniform motion scene in the moving sound source test signal; and the spatial immersion score is obtained by the listener after judging the sense of enclosure, spatial size and type, and degree of externalization of each scene test signal.

21. An electronic device, characterized in that, include: Memory, used to store computer programs; A processor for executing the computer program to implement the spatial perception quality testing method for a binaural rendering processing system as described in any one of claims 1 to 19.

22. A computer-readable storage medium, characterized in that, Used to store a computer program, wherein the computer program, when executed by a processor, implements the spatial perception quality testing method of the binaural rendering processing system as described in any one of claims 1 to 19.

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