Spatial audio acquisition device and spatial audio test system

Abstract

The invention relates to the technical field of spatial audio, and discloses a spatial audio acquisition device and a spatial audio test system, and the device comprises a pedestal, one side of which is provided with a test space; the driving part is arranged on the base; the artificial head part is provided with a first acquisition assembly, the artificial head part is arranged on the driving part, the driving part can drive the artificial head part to move in the test space, and the first acquisition assembly is used for spatial audio acquisition. According to the invention, the first acquisition assembly can be installed on the artificial head part, the driving part is arranged, and the artificial head can be driven to move in the test space through the driving part, so that the artificial head can carry out spatial audio acquisition in a multi-dimensional direction.

Description

Technical Field

[0001] The present application relates to the field of spatial audio technology, and in particular to a spatial audio acquisition device and a spatial audio testing system. Background Art

[0002] At present, the Head-Related Transfer Function (HRTF) describes the transmission process of sound waves from the sound source to the ears. It can simulate the propagation and positioning of sound in space and create an immersive auditory experience for users.

[0003] In the existing generation of HRTF, an artificial head carrying a collection device is generally used to collect spatial audio, and then the HRTF is generated based on the collection results. During the collection, in order to simulate the propagation and positioning of sound in space, it is often necessary to collect spatial audio in various directions. Therefore, how to enable the artificial head to collect spatial audio in multiple dimensions is an urgent problem to be solved. Summary of the invention

[0004] The main purpose of this application is to provide a spatial audio acquisition device and a spatial audio testing system, aiming to solve the existing technical problem of how to enable an artificial head to collect spatial audio in multi-dimensional directions.

[0005] To achieve the above object, the present application provides a spatial audio acquisition device, the device comprising:

[0006] A base, wherein a test space is formed on one side of the base;

[0007] A driving component, wherein the driving component is disposed on the base;

[0008] An artificial head component is installed with a first acquisition component, the artificial head component is arranged on the driving component, the driving component can drive the artificial head component to move in the test space, and the first acquisition component is used for spatial audio acquisition.

[0009] In one embodiment, the driving component includes: a first rotating component and a second rotating component;

[0010] The first rotating component is arranged on the base, the second rotating component is arranged on the first rotating component, the first rotating component is used to drive the second rotating component to rotate along the horizontal direction in the test space, the artificial head component is arranged on the second rotating component, and the second rotating component is used to drive the artificial head component to rotate along the vertical direction in the test space.

[0011] In one embodiment, the first rotating assembly comprises:

[0012] A rotating base, the rotating base is rotatably disposed on the base;

[0013] A supporting structure, wherein the supporting structure is fixedly connected to the rotating base, and the second rotating assembly is arranged on the supporting structure;

[0014] A first driving member, wherein the first driving member is used to drive the rotating base to rotate horizontally.

[0015] In one embodiment, the second rotating assembly comprises:

[0016] A mounting frame, the mounting frame is arranged on the supporting structure, and the artificial head component is arranged on the mounting frame;

[0017] A second driving member, wherein the second driving member is used to drive the mounting frame to rotate vertically.

[0018] In one embodiment, the device further comprises:

[0019] A first sound-emitting component is disposed in the test space, and is used for emitting a sound source, so that the first acquisition component performs spatial audio acquisition on the sound source.

[0020] In addition, to achieve the above-mentioned purpose, the present application also provides a spatial audio test system, the system comprising: a test component and the spatial audio acquisition device as described above, the test component being connected to the first acquisition component;

[0021] The testing component is used to obtain a first acquisition result obtained by the first acquisition component performing spatial audio acquisition, and to test the first acquisition result to generate a head-related transfer function.

[0022] In one embodiment, the testing component is further used to test the first acquisition result, generate a head-related impulse response, and generate a head-related transfer function based on the head-related impulse response.

[0023] In one embodiment, the system further comprises: a second collection component, the second collection component being connected to the test component, the distance between the second collection component and the first sound-emitting component being the same as the distance between the first collection component and the first sound-emitting component;

[0024] The second acquisition component is further used to perform spatial audio acquisition on the sound source emitted by the first sound-emitting component to obtain a second acquisition result, and to test the first acquisition result and the second acquisition result to generate a head-related impulse response.

[0025] In one embodiment, the testing component is further used to perform frequency domain conversion on the first acquisition result and the second acquisition result respectively;

[0026] The testing component is further used to perform a division operation on the converted first acquisition result and the converted second acquisition result, and perform time domain conversion on the operation result to generate a head-related impulse response.

[0027] In one embodiment, the system further comprises: a second sound-emitting component;

[0028] The second sound-generating component is arranged on the artificial head component;

[0029] The first acquisition component is further used to perform spatial audio acquisition on the sound source emitted by the second sound-emitting component to obtain a third acquisition result;

[0030] The testing device is further used to test the third acquisition result, obtain the head-related transfer function corresponding to the second sound-emitting component, and perform spatial audio rendering on the rendering device through the head-related transfer function corresponding to the second sound-emitting component.

[0031] The present application provides a spatial audio acquisition device and a spatial audio test system, the device comprising: a base, a test space is formed on one side of the base; a driving component, the driving component is arranged on the base; an artificial head component with a first acquisition component installed, the artificial head component is arranged on the driving component, the driving component can drive the artificial head component to move in the test space, and the first acquisition component is used for spatial audio acquisition. Since the present application can install the first acquisition component on the artificial head component and is provided with a driving component, the artificial head can be driven to move in the test space by the driving component, so that the artificial head can realize spatial audio acquisition from multiple dimensions. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0034] Figure 1 This is a schematic diagram of the structure of the first embodiment of the spatial audio acquisition device of the present application;

[0035] Figure 2A side view of the second embodiment of the spatial audio acquisition device of the present application;

[0036] Figure 3 This is a schematic diagram of the structure of the first embodiment of the spatial audio testing system of the present application;

[0037] Figure 4 This is a schematic diagram of the angle position of the artificial head component in the first embodiment of the spatial audio test system of the present application embodiment;

[0038] Figure 5 This is a schematic diagram of the angular position of a real person in the first embodiment of the spatial audio testing system of the present application embodiment.

[0039] Description of Figure Numbers:

[0040] Label name Label name 1 Base 222 Second driving member 2 Drive components 3 Artificial head parts 21 First rotating component 31 First collection component 211 Rotating base 4 The first sound component 212 Support structure 5 Test components 22 Second rotating assembly 6 Second acquisition component 221 Mounting bracket

[0041] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0043] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0044] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0045] In addition, the descriptions of "first", "second", etc. in this application are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0046] It is understandable that at present, the Head-Related Transfer Function (HRTF) describes the transmission process of sound waves from the sound source to the ears, which can simulate the propagation and positioning of sound in space and create an immersive auditory experience for users.

[0047] In the existing generation of HRTF, an artificial head carrying a collection device is generally used to collect spatial audio, and then the HRTF is generated based on the collection results. During the collection, in order to simulate the propagation and positioning of sound in space, it is often necessary to collect spatial audio in various directions. Therefore, how to enable the artificial head to collect spatial audio in multiple dimensions is an urgent problem to be solved.

[0048] Therefore, in order to solve the above-mentioned defects, the present embodiment provides a spatial audio acquisition device, in which the first acquisition component can be installed on the artificial head component, and a driving component is provided. The driving component can drive the artificial head to move in the test space, so that the artificial head can realize spatial audio acquisition from multiple dimensions.

[0049] For ease of understanding, the following combination Figures 1 to 5 The spatial audio acquisition device provided in the embodiment of the present application is specifically introduced.

[0050] Reference Figure 1 , Figure 1 This is a structural diagram of the first embodiment of the spatial audio collection device of the present application. The first embodiment of the spatial audio collection device of the present application is proposed. Figure 1 As shown, in this embodiment, the device includes:

[0051] A base 1, wherein a test space is formed on one side of the base 1;

[0052] A driving component 2, wherein the driving component 2 is disposed on the base 1;

[0053] An artificial head component 3 is installed with a first acquisition component 31, and the artificial head component 3 is arranged on the driving component 2. The driving component 2 can drive the artificial head component 3 to move in the test space. The first acquisition component 31 is used for spatial audio acquisition.

[0054] It should be noted that the above-mentioned base 1 can be any base for carrying the driving component 2 and the artificial head component 3, and a test space for spatial audio collection can be formed on one side of the base 1. In this embodiment, the above-mentioned test space can be formed on the top of the base 1.

[0055] The driving component 2 may be disposed on the top of the base 1. The artificial head component 3 may be a component simulating the acoustic characteristics of a human ear and head, and may be disposed on the driving component 2, and the artificial head component 3 may be movably connected relative to the driving component 2, and the driving component 2 may be movably connected relative to the base 1, and the driving component 2 may drive the artificial head component 3 to rotate in the formed test space.

[0056] It is understandable that the first acquisition component 31 can be any component for collecting spatial audio. This embodiment uses an acquisition card for illustration, and the acquisition card can be provided with a microphone, and the spatial audio can be collected through the microphone. At the same time, the artificial head component 3 in this embodiment can be configured with a nose pad, an artificial mouth, binaural ear canals and other designs that simulate a real head, and the first acquisition component 31 can be set in the binaural ear canals of the artificial head component 3, thereby simulating the process of real people listening to sounds.

[0057] like Figure 1 As shown, in actual use, the driving component 2 can drive the artificial head component 3 to rotate, and because the first collecting component 31 is arranged on the artificial head component 3, it can also drive the first collecting component 31 to rotate, so that the first collecting component 31 can simulate listening to spatial audio from different directions, so that the artificial head can realize spatial audio collection from multiple dimensions.

[0058] In this embodiment, the first acquisition component 31 can be installed on the artificial head component 3, and a driving component 2 is provided. The driving component 2 can drive the artificial head to move in the test space, so that the artificial head can collect spatial audio from multiple dimensions.

[0059] Furthermore, in order to make the test space have spatial audio, refer to Figure 2 , Figure 2 This is a side view of the second embodiment of the spatial audio acquisition device of the present application, as shown Figure 2 As shown, in this embodiment, the spatial audio acquisition device further includes:

[0060] The first sound-emitting component 4 is disposed in the test space, and is used for emitting a sound source, so that the first acquisition component 31 performs spatial audio acquisition on the sound source.

[0061] It should be understood that the first sound-emitting component 4 can be any component for generating audio, such as a speaker or a micro speaker, which can cover the full frequency band and can be as small as possible to simulate a point sound source, which is not limited in this embodiment.

[0062] In this embodiment, the first sound-emitting component 4 can be arranged at any position in the test space. Figure 2As shown, in this embodiment, the first sound-emitting component 4 can be set at about 1.5m away from the first collection component 31. In order to ensure that the first collection component 31 can achieve multi-dimensional directional collection, the first sound-emitting component 4 in this embodiment can be set at or below the horizontal plane of the first collection component 31. The specific position can be set according to actual conditions, and this embodiment does not limit this. And the sound source played by the first sound-emitting component 4 includes but is not limited to pulse signals, sine waves, noise signals, etc.

[0063] It should also be emphasized that, in order to ensure accuracy, the first sound-emitting components 4 may be respectively arranged at different positions in the test space in this embodiment, and the specific number is not limited in this embodiment.

[0064] In actual use, the first sound-emitting component 4 can be fixedly installed at a certain place in the test space in advance, and ensure that it is carried out in a full-elimination chamber or a half-elimination chamber, preferably less than or equal to 30dBSPL (A). Then the first sound-emitting component 4 can be excited to generate audio, and the artificial head component 3 can be continuously driven to rotate through the driving component 2, so that the first acquisition component 31 can capture spatial audio in various directions, thereby realizing the artificial head to collect spatial audio from multiple dimensions.

[0065] Further, in order to enable the driving component 2 to drive the artificial head component 3 to rotate to various positions, continue as follows Figure 1 As shown, in this embodiment, the driving component 2 includes: a first rotating component 21 and a second rotating component 22;

[0066] The first rotating component 21 is arranged on the base 1, the second rotating component 22 is arranged on the first rotating component 21, the first rotating component 21 is used to drive the second rotating component 22 to rotate along the horizontal direction in the test space, and the artificial head component 3 is arranged on the second rotating component 22, and the second rotating component 22 is used to drive the artificial head component 3 to rotate along the vertical direction in the test space.

[0067] It should be noted that the first rotating assembly 21 may be a assembly for driving the artificial head component 3 to rotate in the horizontal direction, and specifically may drive the artificial head component 3 to rotate along the central axis, thereby completing the horizontal rotation. The second rotating assembly 22 may be a assembly for driving the artificial head component 3 to rotate in the vertical direction, and specifically may drive the artificial head component 3 to rotate forward and backward with the second rotating assembly 22 as the center, thereby completing the vertical rotation.

[0068] Specifically, Figure 1 As shown, the first rotating assembly 21 comprises:

[0069] A rotating base 211, wherein the rotating base 211 is rotatably disposed on the base 1;

[0070] A supporting structure 212, wherein the supporting structure 212 is fixedly connected to the rotating base 211, and the second rotating assembly 22 is disposed on the supporting structure 212;

[0071] A first driving member, wherein the first driving member is used to drive the rotating base 211 to rotate horizontally.

[0072] It is understandable that the rotating base 211 can be set to be circular and rotatably connected to the base 1. Specifically, the rotating base 211 can rotate in the horizontal direction at the center of the rotating base 211. The first driving component 2 can be a component that drives the rotating base 211 to rotate, such as a motor. In this embodiment, the first driving component 2 can be set in the base 1, specifically at the bottom of the rotating base 211, and of course it can be set in other positions, which is not limited in this embodiment.

[0073] The above-mentioned support structure 212 can be at least one component for supporting the second rotating component 22. This embodiment uses two support rods for illustration, and they are respectively arranged at both ends of the rotating base 211. One end of the support structure 212 is fixedly connected to the rotating base 211, and the other end is connected to the second rotating component.

[0074] Further, the second rotating assembly 22 includes:

[0075] A mounting frame 221, wherein the mounting frame 221 is disposed on the supporting structure 212, and the artificial head component 3 is disposed on the mounting frame 221;

[0076] The second driving member 222 is used to drive the mounting frame 221 to rotate vertically.

[0077] It should be understood that, in this embodiment, the mounting frame 221 may be a carrier for carrying the artificial head component 3, and may specifically be a mounting rod, such as Figure 1 As shown, in this embodiment, two mounting rods can be provided, which are respectively provided on both sides of the body position of the artificial head component 3, that is, one end of the mounting rod is fixedly connected to the artificial head component 3, and the other end is rotatably connected to the end of the support rod away from the rotating base 211.

[0078] The above-mentioned second driving component 2 can be a component for driving the mounting frame 221 to rotate, such as a motor, and the above-mentioned second driving component 2 can be arranged on one side of the support rod, that is, one end of the mounting rod away from the artificial head component 3 is not only rotatably connected to the support rod, but also can be fixedly connected to the second driving component 2 through the support rod, and then the mounting frame 221 can be driven to rotate by the second driving component 2, thereby driving the artificial head component 3 to rotate in the vertical direction.

[0079] In addition, to achieve the above-mentioned purpose, the embodiment of the present application also provides a spatial audio testing system, referring to Figure 3 , Figure 3 This is a structural diagram of the first embodiment of the spatial audio testing system of the present application.

[0080] In order to generate a corresponding spatial audio database according to the spatial audio collected by the first collection component 31, so that a playback device such as headphones can subsequently play audio according to the personalized spatial audio database, such as Figure 3 As shown, in this embodiment, the spatial audio test system further includes:

[0081] A test component 5 and the spatial audio acquisition device as described above, wherein the test component 5 is connected to the first acquisition component 31;

[0082] The testing component 5 is used to obtain a first acquisition result obtained by the first acquisition component 31 performing spatial audio acquisition, and to test the first acquisition result to generate a head-related transfer function.

[0083] It should be noted that the test component 5 in this embodiment can be any component for generating a head-related transfer function, such as a computer, etc., and this embodiment does not limit this. And the test component 5 can be connected to the first acquisition component 31.

[0084] It is understandable that the head-related transfer function may be a function of changes in sound waves caused by physiological structures such as the head, auricle and torso of a person during the process of sound waves propagating from the sound source to the human ear, that is, the HRTF.

[0085] In order to generate a head-related transfer function according to the first acquisition result, in this embodiment, the above-mentioned testing component 5 is also used to test the first acquisition result to generate a head-related impulse response, and generate a head-related transfer function based on the head-related impulse response.

[0086] It should be noted that the above-mentioned head-related impulse response (HRIR) can be the response of the sound wave changes caused by the physiological structures of the human head, auricle and trunk during the process of sound waves propagating from the sound source to the human ear. The HRIR can be understood as the expression of HRTF in the time domain, and it is a Fourier transform pair with HRTF. Once the HRIR is obtained, the above-mentioned HRTF can be obtained through Fourier transform.

[0087] In actual use, the spatial audio can be collected by the first collection component 31 on the artificial head component 3. At the same time, the artificial head component 3 in the above-mentioned spatial audio collection device can be replaced in this embodiment. The artificial head component 3 with different head structures, facial features and ear canal structures can be replaced to collect spatial audio, thereby simulating various real-person listening effects.

[0088] After obtaining the acquisition results corresponding to different artificial head components 3, the test component 5 can use them as the above-mentioned first acquisition results, and test the first acquisition results corresponding to each artificial head component 3 to obtain the HRIR corresponding to each artificial head component 3, and then generate the HRTF corresponding to the artificial head component 3 based on the HRIR. When a playback device (such as a headset) needs to perform personalized spatial audio playback to better adapt to the wearer, a suitable HRTF can be selected and imported into the playback device according to the structure of the wearer's head, face or ear canal, and the playback device can play audio according to the HRTF, thereby improving the wearer's listening experience.

[0089] It should also be emphasized that in this embodiment, only different artificial head components 3 need to be replaced to achieve spatial audio collection of various head, face or ear canal structures, and the rest of the test environment can remain unchanged, thereby reducing the number of variables in the test environment and achieving repeatable testing.

[0090] It is also necessary to emphasize that, since the position of the first sound-emitting component 4 in the present embodiment is fixed, that is, in order to change the relative angle between the first collecting component 31 and the first sound-emitting component 4, what is adjusted is the rotation angle of the artificial head component 3, and the conventional method is generally to adjust the position of the first sound-emitting component 4. Therefore, when obtaining the above-mentioned HRIR, the test component 5 in the present embodiment can record the rotation angle of the artificial head component 3 each time the spatial audio is collected, that is, how many degrees of horizontal rotation and how many degrees of vertical rotation, and then the angle between the first sound-emitting component 4 and the first collecting component 31 can be calculated based on the rotation angle, so as to obtain the sound emitted by the first sound-emitting component 4 at the place where it should be when real people listen.

[0091] For example, refer to Figure 4 as well as Figure 5 , Figure 4 This is a schematic diagram of the angle position of the artificial head component 3 in the first embodiment of the spatial audio test system of the present application embodiment. Figure 5 This is a schematic diagram of the real person's angle position in the first embodiment of the spatial audio test system of the present application. Figure 4 As shown, when the artificial head component 3 rotates to an angle of 30° above the horizontal plane with the first sound-generating component 4, the first acquisition result obtained corresponds to Figure 5When a person listens, the line connecting the first sound-emitting component 4 and the ear canal is at an angle of 30° below the horizontal plane.

[0092] Furthermore, considering that if the head-related transfer function is directly generated by the first acquisition result, it may include the influence of factors such as the ear canal, so in order to obtain a pure HRIR, in this embodiment, continue as follows Figure 3 As shown, the system further includes: a second acquisition component 6, the second acquisition component 6 is connected to the test component 5, and the distance between the second acquisition component 6 and the first sound-generating component 4 is the same as the distance between the first acquisition component 31 and the first sound-generating component 4;

[0093] The second acquisition component 6 is further used to perform spatial audio acquisition on the sound source emitted by the first sound-emitting component 4 to obtain a second acquisition result, and to test the first acquisition result and the second acquisition result to generate a head-related impulse response.

[0094] It should be noted that the second collection component 6 can be any component used for audio collection, such as a component with a microphone, etc., and this embodiment does not limit it. However, it should be emphasized that the second collection component 6 can adopt an omnidirectional microphone component, that is, it can evenly receive sounds from all directions.

[0095] It is also necessary to emphasize that, in the present embodiment, the position where the second collecting component 6 is arranged can be a position where the distance from the first sound-emitting component 4 is consistent with the distance from the first sound-emitting component 4 to the first collecting component 31, that is, 41.5 m away from the first sound-emitting component. The specific position can be set according to actual conditions, and the present embodiment does not impose any restrictions on this.

[0096] In actual use, the first sound-emitting component 4 can emit a sound source, which is first collected by the second collection component 6 to obtain the second collection result, temporarily recorded as A, and transmitted to the test component 5; then the second collection component 6 can be removed, and the sound source can be collected by the first collection component 31 in the spatial audio collection device to obtain the first collection result, temporarily recorded as B. Since the second collection result does not include the artificial head component 3, there is no interference from factors such as the ear canal, and then the test component 5 can perform tests based on the first collection result and the second collection result, and the generated head-related impulse response can be a pure head-related impulse response.

[0097] Furthermore, in order to obtain a head-related impulse response according to the first acquisition result and the second acquisition result, in this embodiment, the testing component 5 is further used to perform frequency domain conversion on the first acquisition result and the second acquisition result respectively;

[0098] The testing component 5 is further used to perform a division operation on the converted first acquisition result and the converted second acquisition result, and perform time domain conversion on the operation result to generate a head-related impulse response.

[0099] It is understandable that the first acquisition result is further recorded as B and the second acquisition result is recorded as A for explanation. In actual use, the first acquisition result and the second acquisition result can be converted from the time domain to the frequency domain respectively. If the conversion from the time domain to the frequency domain is recorded as FFT, the converted first acquisition result is recorded as FFT(B), and the converted second acquisition result is recorded as FFT(A). Then, the converted first acquisition result and the converted second acquisition result are divided, that is, FFT(B) / FFT(A), and the operation result is then converted into the time domain, that is, from the frequency to the time domain. If recorded as IFFT, the head-related impulse response HRIR=IFFT(FFT(B) / FFT(A)).

[0100] Furthermore, in order to realize spatial audio rendering of different playback devices, for example, to enable earphone D to have the same spatial audio rendering effect as earphone C, in this embodiment, the system further includes: a second sound-emitting component;

[0101] The second sound-generating component is arranged on the artificial head component 3;

[0102] The first collection component 31 is further used to collect spatial audio from the sound source emitted by the second sound-emitting component to obtain a third collection result;

[0103] The testing device is further used to test the third acquisition result, obtain the head-related transfer function corresponding to the second sound-emitting component, and perform spatial audio rendering on the rendering device through the head-related transfer function corresponding to the second sound-emitting component.

[0104] It should be noted that the second sound-emitting component may be any sound-emitting device, that is, the earphone C. The device to be rendered may be any device that needs to perform spatial audio rendering, that is, the earphone D.

[0105] In actual use, the above-mentioned earphone C can be worn on the ear canal of the artificial head component 3 to simulate a real person wearing earphones, and the second generating component can be controlled to emit spatial audio. The first acquisition component 31 of the artificial head component 3 can collect the spatial audio to obtain the above-mentioned third acquisition result, and the third acquisition result is transmitted to the test equipment for testing to obtain the HRTF corresponding to the earphone C. It should be noted that the HRTF obtained at this time includes all renderings on the input to output link, including but not limited to upmixing, downmixing and pure HRTF.

[0106] The test device then transmits the HRTF to headphone D, so that headphone D can achieve the same rendering effect as headphone C when playing spatial audio.

[0107] It should be emphasized that when the second sound-emitting component is other components for producing sound, such as smart glasses, etc., a corresponding wearing method can be adopted when the artificial head component 3 is worn.

[0108] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0109] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0110] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A spatial audio acquisition device, characterized in that: The device comprises: A base, wherein a test space is formed on one side of the base; A driving component, wherein the driving component is disposed on the base; An artificial head component is installed with a first acquisition component, the artificial head component is arranged on the driving component, the driving component can drive the artificial head component to move in the test space, and the first acquisition component is used for spatial audio acquisition.

2. The device according to claim 1, characterized in that The driving component comprises: a first rotating assembly and a second rotating assembly; The first rotating component is arranged on the base, the second rotating component is arranged on the first rotating component, the first rotating component is used to drive the second rotating component to rotate along the horizontal direction in the test space, the artificial head component is arranged on the second rotating component, and the second rotating component is used to drive the artificial head component to rotate along the vertical direction in the test space.

3. The device according to claim 2, characterized in that The first rotating assembly comprises: A rotating base, the rotating base is rotatably disposed on the base; A supporting structure, wherein the supporting structure is fixedly connected to the rotating base, and the second rotating assembly is arranged on the supporting structure; A first driving member, wherein the first driving member is used to drive the rotating base to rotate horizontally.

4. The device according to claim 3, characterized in that The second rotating assembly comprises: A mounting frame, the mounting frame is arranged on the supporting structure, and the artificial head component is arranged on the mounting frame; A second driving member, wherein the second driving member is used to drive the mounting frame to rotate vertically.

5. The device according to any one of claims 1 to 4, characterized in that The device also includes: A first sound-emitting component is disposed in the test space, and is used for emitting a sound source, so that the first acquisition component performs spatial audio acquisition on the sound source.

6. A spatial audio testing system, characterized in that: The system comprises: a testing component and a spatial audio acquisition device according to any one of claims 1 to 5, wherein the testing component is connected to the first acquisition component; The testing component is used to obtain a first acquisition result obtained by the first acquisition component performing spatial audio acquisition, and to test the first acquisition result to generate a head-related transfer function.

7. The system according to claim 6, characterized in that The testing component is further used to test the first acquisition result, generate a head-related impulse response, and generate a head-related transfer function based on the head-related impulse response.

8. The system according to claim 7, characterized in that The system further comprises: a second collection component, the second collection component being connected to the test component, the distance between the second collection component and the first sound-emitting component being the same as the distance between the first collection component and the first sound-emitting component; The second acquisition component is further used to perform spatial audio acquisition on the sound source emitted by the first sound-emitting component to obtain a second acquisition result, and to test the first acquisition result and the second acquisition result to generate a head-related impulse response.

9. The system according to claim 8, characterized in that The testing component is further used to perform frequency domain conversion on the first acquisition result and the second acquisition result respectively; The testing component is further used to perform a division operation on the converted first acquisition result and the converted second acquisition result, and perform time domain conversion on the operation result to generate a head-related impulse response.

10. The system according to any one of claims 6 to 9, characterized in that The system further comprises: a second sound-generating component; The second sound-generating component is arranged on the artificial head component; The first acquisition component is further used to perform spatial audio acquisition on the sound source emitted by the second sound-emitting component to obtain a third acquisition result; The testing device is further used to test the third acquisition result, obtain the head-related transfer function corresponding to the second sound-emitting component, and perform spatial audio rendering on the rendering device through the head-related transfer function corresponding to the second sound-emitting component.

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