Sound field partition control method and device, control equipment and storage medium

Abstract

The application discloses a sound field partition control method and device, a control equipment and a storage medium. A target sound field partition is determined from each sound field partition, a first transfer function from a loudspeaker array to the target sound field partition is determined according to a function set, a to-be-played audio signal is acquired, an inverted-phase audio signal for canceling the to-be-played audio signal is generated according to the first transfer function and a second transfer function from each target loudspeaker to the target sound field partition, the inverted-phase audio signal is output through each target loudspeaker, and the to-be-played audio signal is output through each second loudspeaker, so that audio isolation is realized on a user in the target sound field partition, normal vehicle audio is played on a user in a non-target sound field partition, and thus, the user in the non-target sound field partition can normally receive audio while avoiding interference of the audio on the user in the target sound field partition at the same time in the same space and at the same time.

Description

Technical Field

[0001] This invention relates to the field of acoustic control technology, and in particular to a method, apparatus, control device, and storage medium for controlling sound field partitioning. Background Technology

[0002] With the rapid development of acoustic technology, users are no longer satisfied with high-quality, high-fidelity audio. More and more users prefer personalized audio playback. Without any acoustic control, audio can be played in the same space, but if there are users who are not interested in the audio, the played audio will interfere with them. Based on this, related technologies employ highly directional speakers and speaker arrays. By optimally adjusting the speaker array, directional audio playback can be achieved, meaning that the audio is played only to users who are interested in it, while no directional playback is played to users who are not interested. This achieves sound field zoning and reduces interference from users who are not interested in the audio.

[0003] However, the aforementioned technologies can only reduce the interference of audio to other users. Even if the audio is directional, due to the diffuse nature of audio, users who are not interested in the audio can still hear it clearly in the same space, and cannot achieve effective control of sound field zoning.

[0004] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main objective of this invention is to provide a sound field zoning control method, which aims to solve the technical problem that existing sound field zoning control methods cannot effectively eliminate audio interference to users.

[0006] To achieve the above objectives, the present invention provides a method for controlling sound field partitioning, wherein a plurality of first loudspeakers and a plurality of second loudspeakers are arranged in a target space, each first loudspeaker dividing the target space into a plurality of sound field partitions, and each sound field partition contains at least one first loudspeaker. The method for controlling sound field partitioning includes the following steps:

[0007] The target sound field zone is determined from each sound field zone, and the first transfer function from the loudspeaker array to the target sound field zone is determined according to the function set. The loudspeaker array is an array composed of each target loudspeaker, each target loudspeaker is the first loudspeaker in the target sound field zone, and the function set includes the second transfer functions from each first loudspeaker and each second loudspeaker to the target sound field zone respectively.

[0008] The audio signal to be played is acquired, and an inverse audio signal is generated to cancel out the audio signal to be played, based on the first transfer function and the second transfer function from each target speaker to the target sound field partition.

[0009] The target speakers output inverted audio signals, and the second speakers output the audio signals to be played.

[0010] Optionally, before the step of determining the first transfer function from the speaker array to the target sound field partition based on the function set, the target sound field partition is pre-defined with left and right ear positions, and includes:

[0011] Obtain the first left transfer function and the first right transfer function of each first speaker to the left ear position and the right ear position respectively; and obtain the second left transfer function and the second right transfer function of each second speaker to the left ear position and the right ear position respectively.

[0012] The first left transfer function and the first right transfer function are used as the second transfer functions from each first loudspeaker to the target sound field zone, and the second left transfer function and the second right transfer function are used as the second transfer functions from each second loudspeaker to the target sound field zone, thereby determining the function set.

[0013] Optionally, the step of determining the first transfer function from the loudspeaker array to the target sound field zone based on the function set includes:

[0014] The third left transfer function is obtained by adding the second left transfer functions in the function set, and the third right transfer function is obtained by adding the second right transfer functions in the function set.

[0015] The fifth left transfer function from the speaker array to the left ear position and the fifth right transfer function to the right ear position are calculated using the fourth left transfer function, the fourth right transfer function, the third left transfer function, and the third right transfer function. The fifth left transfer function and the fifth right transfer function are used as the first transfer function from the speaker array to the target sound field zone. The fourth left transfer function is the first left transfer function from each target speaker to the left ear position in the function set, and the fourth right transfer function is the first right transfer function from each target speaker to the right ear position in the function set.

[0016] Optionally, the step of generating an inverted audio signal to cancel out the audio signal to be played, based on the first transfer function and the second transfer function from each target loudspeaker to the target sound field zone, includes:

[0017] The left-side inverted audio signal, calculated based on the fifth left transfer function, the fifth right transfer function, and each of the fourth left transfer functions, cancels the audio signal to be played from the second speaker to the left ear position. The right-side inverted audio signal, calculated based on the fifth left transfer function, the fifth right transfer function, and each of the fourth right transfer functions, cancels the audio signal to be played from the second speaker to the right ear position. The left-side inverted audio signal and the right-side inverted audio signal are used as the inverted audio signal to cancel the audio signal to be played.

[0018] Optionally, the steps of outputting inverted audio signals through each target speaker and outputting audio signals to be played through each second speaker include:

[0019] Determine the output delay duration of the inverted audio signal and the output delay duration of the audio signal to be played;

[0020] The output delay of the inverted audio signal is extended at the original output time of the target speaker to obtain the first output time, and the output delay of the audio signal to be played is extended at the original output time of the second speaker to obtain the second output time.

[0021] The target speakers output inverted audio signals starting from the first output moment, and the second speakers output audio signals to be played starting from the second output moment.

[0022] Optionally, before the step of generating the inverted audio signal to cancel the played audio signal based on the first transfer function and the second transfer function from each target loudspeaker to the target sound field zone, the method further includes:

[0023] Determine the sound field type of the target sound field zone;

[0024] If the sound field type of the target sound field partition is a dark sound field, then the step of generating an inverted audio signal to cancel the audio signal to be played is performed according to the first transfer function and the second transfer function from each target loudspeaker to the target sound field partition.

[0025] If the sound field type of the target sound field zone is a bright zone sound field, then a positive phase audio signal to enhance the audio signal to be played is generated according to the first transfer function and the second transfer function from each target loudspeaker to the target sound field zone.

[0026] The target speakers output positive phase audio signals, and the second speakers output audio signals to be played.

[0027] Optionally, the steps of outputting a positive-phase audio signal through each target speaker and outputting the audio signal to be played through each second speaker include:

[0028] Determine the output delay duration of the positive phase audio signal and the output delay duration of the audio signal to be played;

[0029] The output delay of the positive phase audio signal is extended from the original output time of the target speaker to obtain the third output time, and the output delay of the audio signal to be played is extended from the original output time of the second speaker to obtain the fourth output time.

[0030] The target speakers output positive phase audio signals starting from the third output time, and the second speakers output audio signals to be played starting from the fourth output time.

[0031] To achieve the above objectives, the present invention also provides a sound field partitioning control device, wherein a plurality of first loudspeakers and a plurality of second loudspeakers are arranged in a target space, each first loudspeaker dividing the target space into a plurality of sound field partitions, and each sound field partition contains at least one first loudspeaker. The sound field partitioning control device includes:

[0032] A determining module is configured to determine a target sound field partition from each of the sound field partitions, and to determine a first transfer function from the loudspeaker array to the target sound field partition according to a function set, wherein the loudspeaker array is an array composed of each target loudspeaker, each target loudspeaker is a first loudspeaker within the target sound field partition, and the function set includes second transfer functions from each first loudspeaker and each second loudspeaker to the target sound field partition respectively;

[0033] The calculation module is used to acquire the audio signal to be played, and generate the inverted audio signal that cancels out the audio signal to be played according to the first transfer function and the second transfer function from each of the target speakers to the target sound field partitions;

[0034] The control module is configured to output the inverted audio signal through each of the target speakers and to output the audio signal to be played through each of the second speakers.

[0035] To achieve the above objectives, the present invention also provides a control device, which includes: a memory, a processor, and a control program stored in the memory and executable on the processor. When the control program is executed by the processor, it implements the steps of the sound field zoning control method described above.

[0036] In addition, to achieve the above objectives, the present invention also proposes a computer-readable storage medium storing a control program, which, when executed by a processor, implements the steps of the sound field zoning control method described above.

[0037] In this invention, a target sound field zone is determined from each sound field zone. A first transfer function from the speaker array to the target sound field zone is determined according to a function set. The speaker array is an array composed of target speakers, and each target speaker is a first speaker within the target sound field zone. The function set includes second transfer functions from each first speaker and each second speaker to the target sound field zone. An audio signal to be played is obtained. Based on the first transfer function and the second transfer functions from each target speaker to the target sound field zone, an inverted audio signal to cancel the audio signal to be played is generated. The inverted audio signal is output through each target speaker, and the audio signal to be played is output through each second speaker. The inverted audio signal is output through the first speaker to cancel the audio signal to be played output by each second speaker. This achieves audio isolation for users within the target sound field zone and normal audio playback for users outside the target sound field zone, thereby meeting the needs of users in different sound field zones within the same space for different sound field environments. Attached Figure Description

[0038] Figure 1 This is a flowchart illustrating the first embodiment of the sound field zoning control method of the present invention;

[0039] Figure 2 This is a schematic diagram of a scenario in which the sound field is divided into zones based on the first loudspeaker within the target space of the present invention.

[0040] Figure 3 This is a schematic diagram of the second transfer function from the first speaker to the user's ear and the second transfer function from the second speaker to the user's ear within a target sound field zone of the present invention.

[0041] Figure 4 A schematic diagram of the process for generating the second transfer function in this invention;

[0042] Figure 5 This is a flowchart illustrating the second embodiment of the sound field zoning control method of the present invention;

[0043] Figure 6 This is a schematic diagram of the functional modules of an embodiment of the sound field zoning control device of the present invention.

[0044] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0045] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0046] This invention provides a method for controlling sound field zoning, referring to... Figure 1 , Figure 1This is a flowchart illustrating a first embodiment of a sound field zoning control method according to the present invention. It should be noted that although the logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than that shown here. In this embodiment, the sound field zoning control method includes the following steps:

[0047] Step S10: Determine the target sound field partition from each of the sound field partitions, and determine the first transfer function from the loudspeaker array to the target sound field partition according to the function set, wherein the loudspeaker array is an array composed of each target loudspeaker, each target loudspeaker is the first loudspeaker in the target sound field partition, and the function set includes the second transfer functions from each first loudspeaker and each second loudspeaker to the target sound field partition respectively.

[0048] It should be noted that this embodiment uses the target space as an example. In practical application scenarios, the target space can be the interior space of a car, or the viewing space of a movie theater, etc., in any scenario where audio playback is required. Figure 2 For example, Figure 2 A target space is defined by 16 first loudspeakers distributed within it. Based on the layout of the first loudspeakers within the target space, the target space is divided into 8 sound field zones (i.e., the rectangular spaces defined by the dotted lines). The second loudspeakers are located around the perimeter of the target space.

[0049] Since it is assumed that there are 8 sound field zones in this embodiment, the 8 sound field zones are controlled accordingly based on actual user needs. Specifically, the target sound field zone is determined from the 8 sound field zones. In this embodiment, the target sound field zone is the sound field zone where the user who needs to isolate the audio to be played is located. Users who do not need to isolate the audio to be played are assigned to sound field zones other than the target sound field zone.

[0050] Once the target sound field partition is determined from each of the aforementioned sound field partitions, a first transfer function is then determined based on the previously acquired function set, from the speaker array consisting of the first speakers included in the target sound field partition to the user's ear within the target sound field partition. The function set consists of the second transfer functions from each first speaker and each second speaker to the target sound field partition, respectively, acquired previously by the sound pickup device. The sound pickup device is used to simulate user settings in each sound field partition, dividing the target space into several sound field partitions through the set first speakers, so that the corresponding first speakers set in the sound field partition can be controlled according to the needs of the users in the sound field partitions, providing anti-interference measures for the users in the sound field partitions.

[0051] It should be noted that the transfer function refers to the ratio of the Laplace transform of the audio output from a speaker to the Laplace transform of the audio input received by the sound pickup device under zero initial conditions. In this embodiment, the transfer function is the transfer function of the audio signal from the speaker to the user's ear, specifically, Figure 2 The black dots in the image represent the user's ears, and there can be several black dots in a sound field zone.

[0052] In this embodiment, the target space can be obtained by acquiring the behavioral characteristic information of the user within the target space. This behavioral characteristic information refers to inherent physiological characteristics of the human body. Based on the collected behavioral characteristic information, it is determined whether the behavioral characteristic matches preset characteristic information. The preset characteristic information is pre-stored in the judgment module that determines whether the behavioral characteristic matches the preset characteristic information, triggering the determination of the sound field partition where the user is located as the target sound field partition. For example, based on the user's need for a strong anti-interference acoustic environment when making a phone call, the user's phone call behavior characteristics are pre-stored as preset characteristic information. When it is determined that the current user's behavior characteristics captured by the camera are phone call behavior characteristics, the sound field partition where the user is located is determined as the target sound field partition. Similarly, based on the user's need for a strong anti-interference acoustic environment when resting in a car, the user's resting behavior characteristics are pre-stored as preset characteristic information. When it is determined that the current user's behavior characteristics captured by the camera are resting behavior characteristics, the sound field partition where the user is located is determined as the target sound field partition. This achieves intelligent definition of the target sound field partition based on the user's needs, avoiding the inconvenience of manually uploading the target sound field partition.

[0053] The target area can also be defined by receiving the uploaded location signal.

[0054] Specifically, for example, when a user is receiving a hands-free call within a certain sound field zone, a location signal is generated based on the hands-free call connection information. This location signal is then used to determine the sound field zone where the user is located as the target sound field zone. Similarly, when providing a relatively quiet acoustic environment for an animal within a certain sound field zone is required, the location signal of that sound field zone uploaded by the user is received, and the sound field zone where the animal is located is determined as the target sound field zone. Alternatively, the location signal could be a gravity signal. When a gravity sensor on a sound field zone detects that the gravity of that zone exceeds a preset gravity, the sound field zone is determined as the target sound field zone based on this signal. The preset gravity can be factory-set or user-set, enabling intelligent definition of the target area based on user needs and improving the user experience.

[0055] Furthermore, in one embodiment, before step S10, the method further includes:

[0056] Step A1: Obtain the first left transfer function and the first right transfer function of each of the first speakers to the left ear position and the right ear position, respectively; and obtain the second left transfer function and the second right transfer function of each of the second speakers to the left ear position and the right ear position, respectively.

[0057] Step A2: The first left transfer function and the first right transfer function are used as the second transfer functions from each of the first loudspeakers to the target sound field zone, and the second left transfer function and the second right transfer function are used as the second transfer functions from each of the second loudspeakers to the target sound field zone, thereby determining the function set.

[0058] In the actual reception process, the user receives audio through their left and right ears. Therefore, the function set contains a first left transfer function from each first speaker to each left-ear sound field zone and a first right transfer function from each first speaker to each right-ear sound field zone, as well as a second left transfer function from each second speaker to each left-ear sound field zone and a second right transfer function from each second speaker to each right-ear sound field zone. Figure 3 For example, suppose a target sound field zone includes two first speakers located on the left and right sides of sound pickup device A, and two second speakers on the periphery of each side. Therefore, according to the function set, the second left transfer function from the first second speaker to sound pickup device A is 1FL1, and the second right transfer function is 1FR1; the second left transfer function from the second second speaker to sound pickup device A is 1FL2, and the second right transfer function is 1FR2; the second left transfer function from the third second speaker to sound pickup device A is 1FL3, and the second right transfer function is 1FR3; and the second left transfer function from the fourth second speaker to sound pickup device A... The second left transfer function is 1FL4 and the second right transfer function is 1FR4. The first left transfer function from the first loudspeaker to the sound pickup device A is 2FL1 and the first right transfer function is 2FR1. The first left transfer function from the second loudspeaker to the sound pickup device A is 2FL2 and the first right transfer function is 2FR2. (In this embodiment, it is assumed that the numbers of the first loudspeakers on the left side of the sound field partition are all odd numbers, such as the first loudspeaker, and the numbers of the first loudspeakers on the right side of the sound field partition are all even numbers, such as the second loudspeaker.) After that, the transfer functions of each first loudspeaker and each second loudspeaker picked up by the sound pickup device A are combined into a function set.

[0059] It should be noted that, referring to Figure 4As shown, the sound pickup device in this embodiment includes an artificial head for simulating a user picking up sample audio signals emitted by a second target speaker, a first amplifier for amplifying the picked-up audio signals, and a sound card for performing analog-to-digital conversion on the amplified audio signals.

[0060] Specifically, the artificial head receives sample audio signals emitted by each of the first and second speakers. After recording the sample audio signals, the artificial head obtains the recorded audio signals and outputs the recorded audio signals corresponding to the second target speakers to the first amplifier. The first amplifier amplifies the recorded audio signals and outputs them to the sound card. The sound card performs analog-to-digital conversion on the received amplified recorded audio signals, converting them into digital audio signals. The digital audio signals are then output to the computing device, which performs calculations on the digital audio signals to obtain the second transfer function corresponding to the digital audio signals.

[0061] The sound card is also used to receive analog audio signals processed by the computing device, and output the analog audio signals to the second amplifier, which amplifies the analog audio signals and returns them to the corresponding second target speaker.

[0062] Further, in one embodiment, step S10 includes:

[0063] Step AS101: Add the second left transfer functions in the function set to obtain the third left transfer function, and add the second right transfer functions in the function set to obtain the third right transfer function.

[0064] As can be seen in the above embodiments, the function set includes a second transfer function from each first loudspeaker to each sound field zone and a second transfer function from each second loudspeaker to each sound field zone.

[0065] The second left transfer function and the second right transfer function corresponding to each second loudspeaker are added together to obtain the third left transfer function set TFL and the third right transfer function set TFR.

[0066] Step S102: Calculate the fifth left transfer function from the speaker array to the left ear position and the fifth right transfer function to the right ear position using each fourth left transfer function, each fourth right transfer function, the third left transfer function, and the third right transfer function. Use the fifth left transfer function and the fifth right transfer function as the first transfer function from the speaker array to the target sound field zone. Each fourth left transfer function is a first left transfer function from each target speaker to the left ear position, and each fourth right transfer function is a first right transfer function from each target speaker to the right ear position.

[0067] Substitute the third left transfer function set TFL and the third right transfer function set TFR, as well as the fourth left transfer function and the fourth right transfer function corresponding to each first loudspeaker included in the sound field partition determined as the target sound field partition, into Equation 1.

[0068]

[0069] Where x is the fifth right transfer function from the loudspeaker array in the target sound field zone to the target sound field zone, and y is the fifth left transfer function from the loudspeaker array in the target sound field zone to the target sound field zone.

[0070] in, It is the third right transfer function. For the third left transfer function, Figure 3 Substituting the function set obtained in the previous step into Formula 1, we can obtain:

[0071]

[0072]

[0073] This determines the first transfer function (i.e., the fifth left transfer function and the fifth right transfer function) corresponding to the target sound field partition.

[0074] It should be noted that the calculations of the fifth left transfer function and the fifth right transfer function mentioned above are only performed for a single target sound field partition.

[0075] When the first transfer function of the target sound field partition is known, the audio signal to be output by each first loudspeaker contained in the target sound field partition can be determined based on the first transfer function and the audio signal to be played.

[0076] Step S20: Obtain the audio signal to be played, and generate an inverse audio signal to cancel out the audio signal to be played based on the first transfer function and the second transfer function from each of the target speakers to the target sound field partitions.

[0077] In this embodiment, generating an inverted audio signal based on the audio signal to be played can maximize the degree of cancellation of the audio signal to be played and avoid audio interference to users in the target sound field zone.

[0078] Further, in one embodiment, step S20 includes:

[0079] Step S201: Calculate the left-side inverted audio signal that cancels out the audio signal to be played from the second speaker to the left ear position based on the fifth left transfer function, the fifth right transfer function, and each of the fourth left transfer functions; and calculate the right-side inverted audio signal that cancels out the audio signal to be played from the second speaker to the right ear position based on the fifth left transfer function, the fifth right transfer function, and each of the fourth right transfer functions. Use the left-side inverted audio signal and the right-side inverted audio signal as the inverted audio signal to cancel out the audio signal to be played.

[0080] Specifically, refer to Figure 3 At this time, the audio signal to be played (i.e., the signal to be played through each of the second speakers) is acquired. Figure 3 The Signal in the target sound field partition is determined by formula 2 based on the first transfer function (fifth left transfer function and fifth right transfer function) of the target sound field partition and the second transfer function (fourth left transfer function and fourth right transfer function) of each target loudspeaker included in the target sound field partition. This enables the target loudspeakers included in the target sound field partition to provide users in the target sound field partition with an acoustic environment that is audio isolated from non-target sound field partitions based on the inverted audio signal.

[0081]

[0082] Where sig is the audio signal to be played. Substituting the assumed function set in step S10 and the transfer function obtained based on the function set into Equation 2, we get:

[0083] -(sig*TFL)=sig*y*2FL1+sig*x*2FL2

[0084] -(sig*TFR)=sig*y*2FR1+sig*x*2FR2

[0085] By simplifying it, we get:

[0086] -TFL=y*2FL1+x*2FL2

[0087] -TFR=y*2FR1+x*2FR2

[0088] -TFL and -TFR are the inverted audio signals. -TFL is the left inverted audio signal that cancels the audio signal to be played transmitted to the user's left ear, and -TFR is the right inverted audio signal that cancels the audio signal to be played transmitted to the user's right ear.

[0089] Step S30: Output the inverted audio signal through each of the target speakers, and output the audio signal to be played through each of the second speakers.

[0090] Specifically, the first speaker in the target sound field zone outputs inverted audio signals -TFR and -TFL to cancel out the audio signals to be played from the second speakers in the target sound field zone. This achieves audio isolation between the target sound field zone and the non-target sound field zone, controlling the target sound field zone to enter a dark sound field. A dark sound field refers to a sound field where users can only receive audio from the second speakers at very low volume, or cannot receive audio at all. Users in the non-target sound field zone, however, can receive audio from the second speakers at normal volume. It should be noted that to ensure users in the non-target sound field zone can receive normal-volume in-vehicle audio, the first speakers in the non-target sound field zone do not output any signals; that is, the first speakers in the non-target sound field zone are in a stopped state. Only when the non-target sound field zone is converted to a target sound field zone will the first speakers in that zone start operating. This ensures that users in the non-target sound field zone can receive audio normally in the same space and at the same time, while avoiding audio interference with users in the target sound field zone.

[0091] Further, in one embodiment, step S30 includes:

[0092] Step S301: Determine the output delay duration of the inverted audio signal and the output delay duration of the audio signal to be played.

[0093] Specifically, a delay module is set up in the target space to ensure that the amplitude of the audio signal to be played and the amplitude of the inverted audio signal can be output to the user's ear in a consistent manner. This is to avoid the situation where the inverted audio signal cannot effectively cancel the audio signal to be played when the output time of the audio signal to be played and the inverted audio signal are inconsistent in amplitude correspondence.

[0094] The delay module determines the output delay duration of the audio signal to be played and the output delay duration of the inverted audio signal. For example, if the delay module detects that the audio signal to be played needs a 0.3s output delay and the inverted audio signal needs a 0.1s output delay to ensure that the inverted audio signal can effectively cancel out the audio signal to be played, then the delay module determines 0.3s as the output delay duration of the audio signal to be played and 0.1s as the output delay duration of the inverted audio signal.

[0095] Step S302: Extend the output delay of the inverted audio signal at the original output time of the target speaker to obtain a first output time, and extend the output delay of the audio signal to be played at the original output time of the second speaker to obtain a second output time.

[0096] Specifically, after the delay module determines the output delay durations corresponding to the audio signal to be played and the inverted audio signal, it extends the output delay duration of the inverted audio signal at the original output time corresponding to the target speaker to obtain the first output time of the inverted audio signal output by the target speaker. It extends the output delay duration of the audio signal to be played at the original output time corresponding to the second speaker to obtain the second output time of the audio signal to be played by the second speaker. It ensures that the amplitude and phase of the audio signal to be played at each time can correspond one-to-one with the amplitude and phase of the inverted audio signal and be output to the user's ear. This ensures that the inverted audio signal can effectively cancel the audio signal to be played and ensures audio isolation between the target sound field zone and the non-target sound field zone.

[0097] Step S303: Output the inverted audio signal through each of the target speakers starting from the first output time, and output the audio signal to be played through each of the second speakers starting from the second output time.

[0098] Specifically, at the start of the first output moment, the target speaker begins to output an inverted audio signal, and at the start of the second output moment, the second speaker begins to output the audio signal to be played, thus executing the implementation of step S30, which will not be described in detail here.

[0099] In this embodiment, a target sound field zone is determined from each sound field zone. A first transfer function from the speaker array to the target sound field zone is determined according to a function set, wherein the speaker array is an array composed of target speakers, each target speaker is a first speaker within the target sound field zone, and the function set includes second transfer functions from each first speaker and each second speaker to the target sound field zone. An audio signal to be played is obtained. Based on the first transfer function and the second transfer functions from each target speaker to the target sound field zone, an inverted audio signal to cancel the audio signal to be played is generated. The inverted audio signal is output through each target speaker, and the audio signal to be played is output through each second speaker. The inverted audio signal is output through the first speaker to cancel the audio signal to be played output by each second speaker. This achieves audio isolation for users within the target sound field zone and normal audio playback for users outside the target sound field zone, thereby meeting the needs of users in different sound field zones within the same space for different sound field environments.

[0100] Furthermore, referring to Figure 5 Based on the first embodiment described above, a second embodiment of the sound field zoning control method of the present invention is proposed. In this embodiment, before step S10, the method further includes:

[0101] Step S40: Determine the sound field type of the target sound field partition.

[0102] Specifically, based on the diverse needs of users, after acquiring the audio signal to be played, it is necessary to determine the sound field type of the target sound field zone in order to determine whether the user needs anti-interference or increased volume.

[0103] Step S50: If the sound field type of the target sound field partition is a dark sound field, then the step of generating the inverted audio signal to cancel the audio signal to be played is executed according to the first transfer function and the second transfer function from each of the target speakers to the target sound field partition.

[0104] Specifically, if the sound field type of the target sound field partition is determined to be a dark sound field, it indicates that the user's requirement in the target sound field partition is an anti-interference requirement. Therefore, the implementation method of step S20 is executed, which will not be elaborated here.

[0105] Step S60: If the sound field type of the target sound field partition is a bright sound field, then a positive phase audio signal to enhance the audio signal to be played is generated according to the first transfer function and the second transfer function from each of the target loudspeakers to the target sound field partition.

[0106] Specifically, if the sound field type of the target sound field zone is determined to be a bright zone sound field, it indicates that the user in the target sound field zone needs to increase the volume.

[0107] Suppose that a user in the target sound field zone is experiencing tinnitus. When that user needs to make a hands-free call, under current technology, they would manually increase the audio volume to ensure they can receive sound. However, if other users are present in another sound field zone, this increase in volume would interfere with them. Therefore, this embodiment proposes to acquire a positive-phase audio signal that enhances the audio signal to be played, without changing the output audio volume. This positive-phase audio signal is then output through the target speakers within the target sound field zone. This achieves the effect of individually increasing the volume of the target sound field zone while maintaining normal volume in other sound field zones. This allows for volume control of different sound field zones within the same space and at the same time, based on the user's different needs.

[0108] Specifically, it still refers to Figure 3 At this time, the audio signal to be played (i.e., the signal to be played through each of the second speakers) is acquired. Figure 3 The signal (in the context of the signal) is used to determine the positive phase audio signal to be enhanced based on the first transfer function (fifth left transfer function and fifth fourth right transfer function) of the target sound field partition and the second transfer function (fourth left transfer function and fourth right transfer function) of each target loudspeaker included in the target sound field partition, according to Formula 3. This enables the target loudspeakers included in the target sound field partition to provide users in the target sound field partition with a greater acoustic environment than non-target sound field partitions based on the positive phase audio signal.

[0109]

[0110] Where sig is the audio signal to be played. Substituting the assumed function set in step S10 and the transfer function obtained based on the function set into formula 3, we can obtain:

[0111] +(sig*TFL)=sig*y*2FL1+sig*x*2FL2

[0112] +(sig*TFR)=sig*y*2FR1+sig*x*2FR2

[0113] By simplifying it, we get:

[0114] +TFL=y*2FL1+x*2FL2

[0115] +TFR=y*2FR1+x*2FR2

[0116] +TFL and +TFR are positive phase audio signals. +TFL is the left positive phase audio signal that enhances the audio signal to be played transmitted to the user's left ear, and +TFR is the right positive phase audio signal that enhances the audio signal to be played transmitted to the user's right ear.

[0117] Step S70: Output the positive phase audio signal through each of the target speakers, and output the audio signal to be played through each of the second speakers.

[0118] Specifically, the first loudspeaker in the target sound field zone outputs positive phase audio signals +TFR and +TFL to enhance the audio signals to be played from the second loudspeakers to the target sound field zone. This achieves audio enhancement of the target sound field zone relative to the non-target sound field zone, thereby controlling the target sound field zone to enter a bright sound field. A bright sound field refers to a sound field in which users can receive audio emitted by the second loudspeakers with a volume greater than normal volume. This ensures that users in the non-target sound field zone can receive audio normally when in the same space and at the same time, while users in the target sound field zone can receive audio with enhanced volume.

[0119] Further, in one embodiment, step S70 includes:

[0120] Step S701: Determine the output delay duration of the positive phase audio signal and the output delay duration of the audio signal to be played.

[0121] Specifically, a delay module is set up in the target space to ensure that the amplitude of the audio signal to be played and the amplitude of the positive phase audio signal can be output to the user's ear in a consistent manner. This is to avoid the situation where the positive phase audio signal cannot effectively enhance the audio signal to be played if the output time of the audio signal to be played and the positive phase audio signal are inconsistent in amplitude correspondence.

[0122] The delay module determines the output delay duration of the audio signal to be played and the output delay duration of the positive phase audio signal. For example, if the delay module detects that the audio signal to be played needs a 0.3s output delay and the positive phase audio signal needs a 0.1s output delay to ensure that the positive phase audio signal can effectively enhance the audio signal to be played, then the delay module determines 0.3s as the output delay duration of the audio signal to be played and 0.1s as the output delay duration of the positive phase audio signal.

[0123] Step S702: Extend the output delay of the positive phase audio signal at the original output time of the target speaker to obtain a third output time, and extend the output delay of the audio signal to be played at the original output time of the second speaker to obtain a fourth output time.

[0124] Specifically, after the delay module determines the output delay durations corresponding to the audio signal to be played and the positive phase audio signal, it extends the output delay duration of the positive phase audio signal at the original output time corresponding to the target speaker to obtain the first output time of the positive phase audio signal output by the target speaker. It extends the output delay duration of the audio signal to be played at the original output time corresponding to the second speaker to obtain the second output time of the audio signal to be played by the second speaker. It ensures that the amplitude and phase of the audio signal to be played at each time can correspond one-to-one with the amplitude and phase of the positive phase audio signal and be output to the user's ear. This ensures that the positive phase audio signal can effectively enhance the audio signal to be played and ensures audio enhancement of the target sound field zone relative to the non-target sound field zone.

[0125] Step S703: The positive phase audio signal is output through each of the target speakers starting from the third output time, and the audio signal to be played is output through each of the second speakers starting from the fourth output time.

[0126] Specifically, at the start of the first output moment, the target speaker begins to output a positive phase audio signal, and at the start of the second output moment, the second speaker begins to output the audio signal to be played, thus executing the implementation of step S30, which will not be described in detail here.

[0127] In this embodiment, the sound field type of the target sound field partition is determined. If the sound field type of the target sound field partition is a dark sound field, then the step of generating an inverse audio signal to cancel the audio signal to be played is executed according to the first transfer function and the second transfer function from each target speaker to the target sound field partition. If the sound field type of the target sound field partition is a bright sound field, then the positive phase audio signal to enhance the audio signal to be played is generated according to the first transfer function and the second transfer function from each target speaker to the target sound field partition. The positive phase audio signal is output through each target speaker, and the audio signal to be played is output through each second speaker. This achieves audio enhancement for users in the target sound field partition and normal volume audio playback for users in non-target sound field partitions, thereby meeting the needs of users in different sound field partitions in the same space for different sound field environments.

[0128] The present invention also provides a sound field zoning control device, wherein a plurality of first loudspeakers and a plurality of second loudspeakers are arranged in a target space, each first loudspeaker dividing the target space into a plurality of sound field zones, and each sound field zone contains at least one first loudspeaker, as described above.Figure 6 The sound field zoning control device includes:

[0129] The determination module 10 is used to determine the target sound field partition from each sound field partition, and to determine the first transfer function from the loudspeaker array to the target sound field partition according to the function set, wherein the loudspeaker array is an array composed of each target loudspeaker, each target loudspeaker is the first loudspeaker in the target sound field partition, and the function set includes the second transfer functions from each first loudspeaker and each second loudspeaker to the target sound field partition respectively;

[0130] The calculation module 20 is used to acquire the audio signal to be played, and generate an inverse audio signal to cancel out the audio signal to be played based on the first transfer function and the second transfer function from each target speaker to the target sound field partition.

[0131] The control module 30 is used to output inverted audio signals through each target speaker and to output audio signals to be played through each second speaker.

[0132] Furthermore, module 10 is determined to be used for:

[0133] Obtain the first left transfer function and the first right transfer function of each first speaker to the left ear position and the right ear position respectively; and obtain the second left transfer function and the second right transfer function of each second speaker to the left ear position and the right ear position respectively.

[0134] The first left transfer function and the first right transfer function are used as the second transfer functions from each first loudspeaker to the target sound field zone, and the second left transfer function and the second right transfer function are used as the second transfer functions from each second loudspeaker to the target sound field zone, thereby determining the function set.

[0135] Furthermore, the computing module 20 is used for:

[0136] The third left transfer function is obtained by adding the second left transfer functions in the function set, and the third right transfer function is obtained by adding the second right transfer functions in the function set.

[0137] The fifth left transfer function from the speaker array to the left ear position and the fifth right transfer function to the right ear position are calculated using the fourth left transfer function, the fourth right transfer function, the third left transfer function, and the third right transfer function. The fifth left transfer function and the fifth right transfer function are used as the first transfer function from the speaker array to the target sound field zone. The fourth left transfer function is the first left transfer function from each target speaker to the left ear position in the function set, and the fourth right transfer function is the first right transfer function from each target speaker to the right ear position in the function set.

[0138] Furthermore, the computing module 20 is used for:

[0139] The left-side inverted audio signal, calculated based on the fifth left transfer function, the fifth right transfer function, and each of the fourth left transfer functions, cancels the audio signal to be played from the second speaker to the left ear position. The right-side inverted audio signal, calculated based on the fifth left transfer function, the fifth right transfer function, and each of the fourth right transfer functions, cancels the audio signal to be played from the second speaker to the right ear position. The left-side inverted audio signal and the right-side inverted audio signal are used as the inverted audio signal to cancel the audio signal to be played.

[0140] Furthermore, the control module 30 is used for:

[0141] Determine the output delay duration of the inverted audio signal and the output delay duration of the audio signal to be played;

[0142] The output delay of the inverted audio signal is extended at the original output time of the target speaker to obtain the first output time, and the output delay of the audio signal to be played is extended at the original output time of the second speaker to obtain the second output time.

[0143] The target speakers output inverted audio signals starting from the first output moment, and the second speakers output audio signals to be played starting from the second output moment.

[0144] Furthermore, module 10 is determined to be used for:

[0145] Determine the sound field type of the target sound field zone;

[0146] If the sound field type of the target sound field partition is a dark sound field, then the step of generating an inverted audio signal to cancel out the audio signal to be played is performed according to the first transfer function and the second transfer function from each target loudspeaker to the target sound field partition.

[0147] Furthermore, the computing module 20 is used for:

[0148] If the sound field type of the target sound field zone is a bright zone sound field, then a positive phase audio signal to enhance the audio signal to be played is generated according to the first transfer function and the second transfer function from each target loudspeaker to the target sound field zone.

[0149] Furthermore, the control module 30 is used for:

[0150] The target speakers output positive phase audio signals, and the second speakers output audio signals to be played.

[0151] Furthermore, the control module 30 is used for:

[0152] Determine the output delay duration of the positive phase audio signal and the output delay duration of the audio signal to be played;

[0153] The output delay of the positive phase audio signal is extended from the original output time of the target speaker to obtain the third output time, and the output delay of the audio signal to be played is extended from the original output time of the second speaker to obtain the fourth output time.

[0154] The target speakers output positive phase audio signals starting from the third output time, and the second speakers output audio signals to be played starting from the fourth output time.

[0155] All embodiments of the sound field partitioning control device of the present invention can refer to the various embodiments of the sound field partitioning control method of the present invention, and will not be described again here.

[0156] Furthermore, this invention also proposes a control device, which includes a structural housing, a communication module, a main control module (e.g., a microcontroller unit (MCU), a speaker, a microphone, and a memory. The main control module may include a microprocessor, an audio decoding unit, a power supply and power management unit, sensors required by the system, and other active or passive components (which can be replaced, removed, or added according to actual functions) to realize audio reception and playback functions. The control device can establish a communication connection with a user terminal through the communication module. The memory of the control device may store a control program, which the microprocessor can use to call the control program stored in the memory and perform the following operations:

[0157] The target sound field zone is determined from each sound field zone, and the first transfer function from the loudspeaker array to the target sound field zone is determined according to the function set. The loudspeaker array is an array composed of each target loudspeaker, each target loudspeaker is the first loudspeaker in the target sound field zone, and the function set includes the second transfer functions from each first loudspeaker and each second loudspeaker to the target sound field zone respectively.

[0158] The audio signal to be played is acquired, and an inverse audio signal is generated to cancel out the audio signal to be played, based on the first transfer function and the second transfer function from each target speaker to the target sound field partition.

[0159] The target speakers output inverted audio signals, and the second speakers output the audio signals to be played.

[0160] Furthermore, before the step of pre-setting left and right ear positions for the target sound field partition, and determining the first transfer function from the speaker array to the target sound field partition based on the function set, the method further includes:

[0161] Obtain the first left transfer function and the first right transfer function of each first speaker to the left ear position and the right ear position respectively; and obtain the second left transfer function and the second right transfer function of each second speaker to the left ear position and the right ear position respectively.

[0162] The first left transfer function and the first right transfer function are used as the second transfer functions from each first loudspeaker to the target sound field zone, and the second left transfer function and the second right transfer function are used as the second transfer functions from each second loudspeaker to the target sound field zone, thereby determining the function set.

[0163] Furthermore, the steps of determining the first transfer function from the speaker array to the target sound field zone, based on the function set, include: (The steps involve pre-setting left and right ear positions within the target sound field zone.)

[0164] The third left transfer function is obtained by adding the second left transfer functions in the function set, and the third right transfer function is obtained by adding the second right transfer functions in the function set.

[0165] The fifth left transfer function from the speaker array to the left ear position and the fifth right transfer function to the right ear position are calculated using the fourth left transfer function, the fourth right transfer function, the third left transfer function, and the third right transfer function. The fifth left transfer function and the fifth right transfer function are used as the first transfer function from the speaker array to the target sound field zone. The fourth left transfer function is the first left transfer function from each target speaker to the left ear position in the function set, and the fourth right transfer function is the first right transfer function from each target speaker to the right ear position in the function set.

[0166] Furthermore, the step of generating an inverted audio signal to cancel out the audio signal to be played, based on the first transfer function and the second transfer function from each target loudspeaker to the target sound field zone, includes:

[0167] The left-side inverted audio signal, calculated based on the fifth left transfer function, the fifth right transfer function, and each of the fourth left transfer functions, cancels the audio signal to be played from the second speaker to the left ear position. The right-side inverted audio signal, calculated based on the fifth left transfer function, the fifth right transfer function, and each of the fourth right transfer functions, cancels the audio signal to be played from the second speaker to the right ear position. The left-side inverted audio signal and the right-side inverted audio signal are used as the inverted audio signal to cancel the audio signal to be played.

[0168] Furthermore, the steps of outputting inverted audio signals through each target speaker and outputting the audio signal to be played through each second speaker include:

[0169] Determine the output delay duration of the inverted audio signal and the output delay duration of the audio signal to be played;

[0170] The output delay of the inverted audio signal is extended at the original output time of the target speaker to obtain the first output time, and the output delay of the audio signal to be played is extended at the original output time of the second speaker to obtain the second output time.

[0171] The target speakers output inverted audio signals starting from the first output moment, and the second speakers output audio signals to be played starting from the second output moment.

[0172] Furthermore, before the step of generating the inverted audio signal to cancel the played audio signal based on the first transfer function and the second transfer function from each target loudspeaker to the target sound field zone, the method further includes:

[0173] Determine the sound field type of the target sound field zone;

[0174] If the sound field type of the target sound field partition is a dark sound field, then the step of generating an inverted audio signal to cancel the audio signal to be played is performed according to the first transfer function and the second transfer function from each target loudspeaker to the target sound field partition.

[0175] If the sound field type of the target sound field zone is a bright zone sound field, then a positive phase audio signal to enhance the audio signal to be played is generated according to the first transfer function and the second transfer function from each target loudspeaker to the target sound field zone.

[0176] The target speakers output positive phase audio signals, and the second speakers output audio signals to be played.

[0177] Furthermore, the steps of outputting positive phase audio signals through each target speaker and outputting audio signals to be played through each second speaker include:

[0178] Determine the output delay duration of the positive phase audio signal and the output delay duration of the audio signal to be played;

[0179] The output delay of the positive phase audio signal is extended from the original output time of the target speaker to obtain the third output time, and the output delay of the audio signal to be played is extended from the original output time of the second speaker to obtain the fourth output time.

[0180] The target speakers output positive phase audio signals starting from the third output time, and the second speakers output audio signals to be played starting from the fourth output time.

[0181] Furthermore, embodiments of the present invention also propose a computer-readable storage medium storing a control program, wherein the control program, when executed by a processor, implements the steps of the sound field zoning control method described above.

[0182] All embodiments of the computer-readable storage medium of the present invention can be referred to in the various embodiments of the sound field partitioning control method of the present invention, and will not be repeated here.

[0183] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system 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 system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0184] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0185] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0186] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A method for controlling sound field zoning, characterized in that, The target space is a vehicle cabin or a closed acoustic space for movie theater viewing. A plurality of first speakers and a plurality of second speakers are installed within the target space. Each first speaker divides the target space into several sound field zones. Each sound field zone contains at least one first speaker. The control method for the sound field zones includes the following steps: By acquiring the behavioral feature information of users in the target space, including the behavioral features of users making phone calls and resting, the behavior feature information is determined to match the collected behavioral feature information with the preset feature information to obtain the matching result. The preset feature information is the pre-stored trigger information that determines the sound field partition where the user is located as the target sound field partition. Based on the matching results, a target sound field partition is determined from each of the sound field partitions, wherein the target sound field partition has a preset left ear position and a right ear position; Obtain the first left transfer function and the first right transfer function of each of the first speakers to the left ear position and the right ear position, respectively; and obtain the second left transfer function and the second right transfer function of each of the second speakers to the left ear position and the right ear position, respectively. The first left transfer function and the first right transfer function are used as the second transfer functions from each of the first loudspeakers to the target sound field partition, and the second left transfer function and the second right transfer function are used as the second transfer functions from each of the second loudspeakers to the target sound field partition, thereby determining a function set. Based on the function set, a first transfer function from the loudspeaker array to the target sound field partition is determined, wherein the loudspeaker array is an array composed of each target loudspeaker, each target loudspeaker is the first loudspeaker in the target sound field partition, the function set includes the second transfer functions from each of the first loudspeakers and each of the second loudspeakers to the target sound field partition, and the first transfer function includes the fifth left transfer function and the fifth right transfer function obtained by the function set operation, and the fourth left transfer function and the fourth right transfer function are the first left transfer function and the first right transfer function corresponding to the target loudspeaker; Obtain the audio signal to be played; Determine the sound field type of the target sound field zone; If the sound field type of the target sound field partition is a dark sound field, then the following steps are performed: calculate the left-side inverted audio signal that cancels the audio signal to be played from the second speaker to the left ear position according to the fifth left transfer function, the fifth right transfer function and each of the fourth left transfer functions, and calculate the right-side inverted audio signal that cancels the audio signal to be played from the second speaker to the right ear position according to the fifth left transfer function, the fifth right transfer function and each of the fourth right transfer functions, and use the left-side inverted audio signal and the right-side inverted audio signal as the inverted audio signal to cancel the audio signal to be played; The inverted audio signal is output through each of the target speakers, and the audio signal to be played is output through each of the second speakers. If the sound field type of the target sound field partition is a bright sound field, then a positive phase audio signal to enhance the audio signal to be played is generated according to the first transfer function and the second transfer function from each of the target loudspeakers to the target sound field partition. The positive phase audio signal is output through each of the target speakers, and the audio signal to be played is output through each of the second speakers.

2. The sound field zoning control method as described in claim 1, characterized in that, The step of determining the first transfer function from the loudspeaker array to the target sound field partition based on the function set includes: The second left transfer function in the function set is added together to obtain the third left transfer function, and the second right transfer function in the function set is added together to obtain the third right transfer function; The fifth left transfer function from the speaker array to the left ear position and the fifth right transfer function to the right ear position are calculated using the fourth left transfer function, the fourth right transfer function, the third left transfer function, and the third right transfer function. The fifth left transfer function and the fifth right transfer function are used as the first transfer function from the speaker array to the target sound field zone. Each fourth left transfer function is a first left transfer function from each target speaker to the left ear position in the function set, and each fourth right transfer function is a first right transfer function from each target speaker to the right ear position in the function set.

3. The sound field zoning control method as described in claim 1, characterized in that, The steps of outputting the inverted audio signal through each of the target speakers and outputting the audio signal to be played through each of the second speakers include: Determine the output delay duration of the inverted audio signal and the output delay duration of the audio signal to be played; The output delay of the inverted audio signal is extended at the original output time of the target speaker to obtain a first output time, and the output delay of the audio signal to be played is extended at the original output time of the second speaker to obtain a second output time. The inverted audio signal is output from the first output time through each of the target speakers, and the audio signal to be played is output from the second output time through each of the second speakers.

4. The sound field zoning control method as described in claim 1, characterized in that, The steps of outputting the positive phase audio signal through each of the target speakers and outputting the audio signal to be played through each of the second speakers include: Determine the output delay duration of the positive phase audio signal and the output delay duration of the audio signal to be played; The output delay of the positive phase audio signal is extended from the original output time of the target speaker to obtain a third output time, and the output delay of the audio signal to be played is extended from the original output time of the second speaker to obtain a fourth output time; The positive phase audio signal is output from the third output time through each of the target speakers, and the audio signal to be played is output from the fourth output time through each of the second speakers.

5. A control device for sound field zoning, characterized in that, The target space is a vehicle cabin or a closed acoustic space for movie theater viewing. A plurality of first speakers and a plurality of second speakers are installed within the target space. Each first speaker divides the target space into several sound field zones. Each sound field zone contains at least one first speaker. The control device for each sound field zone includes: The determination module is used to acquire behavioral feature information of a user within a target space, including user actions such as making a phone call or resting. Based on the acquired behavioral feature information, it determines whether the behavioral feature matches preset feature information to obtain a matching result. The preset feature information is pre-stored trigger information that identifies the user's current sound field partition as a target sound field partition. Based on the matching result, the target sound field partition is determined from each of the sound field partitions, and the target sound field partition has preset left and right ear positions. The module acquires a first left transfer function from each of the first speakers to the left ear position and a first right transfer function to the right ear position, and acquires a second left transfer function from each of the second speakers to the left ear position and a second right transfer function to the right ear position. The module then compares the first left transfer function with the preset left and right ear positions. The first right transfer function is used as the second transfer function from each of the first loudspeakers to the target sound field partition, and the second left transfer function and the second right transfer function are used as the second transfer functions from each of the second loudspeakers to the target sound field partition, thereby determining a function set. The first transfer function from the loudspeaker array to the target sound field partition is determined according to the function set, wherein the loudspeaker array is an array composed of each target loudspeaker, each target loudspeaker is the first loudspeaker in the target sound field partition, the function set includes the second transfer functions from each of the first loudspeakers and each of the second loudspeakers to the target sound field partition, and the first transfer function includes the fifth left transfer function and the fifth right transfer function obtained by the function set operation, and the fourth left transfer function and the fourth right transfer function are the first left transfer function and the first right transfer function corresponding to the target loudspeaker; The calculation module is used to acquire the audio signal to be played, and generate an anti-phase audio signal to cancel the audio signal to be played based on the first transfer function and the second transfer function from each of the target speakers to the target sound field partition. First, it determines the sound field type of the target sound field partition. When the sound field type is a dark sound field, it calculates the left-side anti-phase audio signal from the second speaker to the left ear position based on the fifth left transfer function, the fifth right transfer function, and each of the fourth left transfer functions, and calculates the right-side anti-phase audio signal from the second speaker to the right ear position based on the fifth left transfer function, the fifth right transfer function, and each of the fourth right transfer functions, and merges the left and right anti-phase audio signals as an anti-phase audio signal for cancellation. When the sound field type is a bright sound field, it generates a positive-phase audio signal to enhance the audio signal to be played based on the first transfer function and the second transfer function from each of the target speakers to the target sound field partition. The control module is used to control each of the target speakers to output the inverted audio signal and each of the second speakers to output the audio signal to be played in a dark sound field; and to control each of the target speakers to output the normal-phase audio signal and each of the second speakers to output the audio signal to be played in a bright sound field.

6. A control device, characterized in that, The control device includes: a memory, a processor, and a control program stored in the memory and executable on the processor, the control program being configured to implement the steps of the sound field zoning control method as described in any one of claims 1 to 4.

7. A storage medium, characterized in that, The storage medium stores a control program, which, when executed by a processor, implements the steps of the sound field zoning control method as described in any one of claims 1 to 4.

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