A sound box system and an adaptive control method of the sound box system

Abstract

The embodiment of the application belongs to the field of sound boxes, and relates to a sound box system, which comprises a sound source unit, a power amplification unit and a loudspeaker unit, and a function triggering unit, a DSP processor module and a sound box adaptive control parameter acquisition module; the output end of the sound source unit, the input end of the power amplification unit, the output end of the sound box adaptive control parameter acquisition module and the function triggering unit are connected to the DSP processor module, and the loudspeaker unit and the sound box adaptive control parameter acquisition module are connected to the output end of the power amplification unit. The application also relates to an adaptive control method of the sound box system. The scheme provided by the application can realize adaptive environment adjustment of the sound box system through simple triggering operation, so that a listener is in the best listening position, sound quality is improved, and user experience is improved.

Description

Technical Field

[0001] This application relates to the field of speaker technology, and more specifically, to a speaker system and an adaptive control method for the speaker system. Background Technology

[0002] Existing speaker systems such as Figure 1 As shown, a traditional speaker circuit consists of a sound source unit 1, a power amplifier 2, function buttons 3, a microcontroller unit 4, and speaker units 5 (left speaker 5a, right speaker 5b). Its working principle is as follows: the sound source unit 1 outputs an audio signal to the power amplifier 2; the microcontroller unit 4 controls the power amplifier 2, setting an appropriate amplification gain and performing EQ adjustments to output an audio signal of suitable power; and the speaker unit 5 converts the received audio signal into acoustic energy, transforming it into a sound signal perceptible to the human ear. The placement of the speaker system affects the listening experience. There is a time difference between the sound waves from the left speaker 5a and the right speaker 5b reaching the left and right ears. To achieve the ideal effect, existing speaker systems require professional adjustment and calibration based on the listening environment. This includes carefully adjusting the relative positions of the speaker system and the listener, as well as meticulously adjusting the placement of 2.0, 3.0, 4.1, 5.1, and 7.1 channel speakers. Because the speaker system and the listening space are integrated, the various sound effects are subject to the interaction between the speakers and the listening environment. The listening effect will vary depending on the listener's position. Only in a specific position after professional adjustment can the best stereo effect be guaranteed, which affects the listener's experience. Summary of the Invention

[0003] In view of this, embodiments of this application provide a speaker system that solves the technical problem that existing speaker systems cannot achieve omnidirectional stereo listening effects. Furthermore, an adaptive control method for the speaker system is provided.

[0004] To address the aforementioned technical problems, this application provides a speaker system that employs the following technical solution:

[0005] A speaker system includes a sound source unit, a power amplifier unit, and a speaker unit, as well as a function trigger unit, a DSP processor module, and a speaker adaptive control parameter acquisition module;

[0006] The output terminal of the sound source unit, the input terminal of the power amplifier unit, the output terminal of the speaker adaptive control parameter acquisition module, and the function trigger unit are connected to the DSP processor module, and the speaker unit and the speaker adaptive control parameter acquisition module are connected to the output terminal of the power amplifier unit.

[0007] Furthermore, the speaker adaptive control parameter acquisition module includes an image acquisition unit, a distance sensing unit, a signal feedback unit, and an ambient sound acquisition unit;

[0008] The image acquisition unit is used to acquire the image of the target object and transmit it to the processor unit; the distance sensor is used to acquire the distance between the target object and the speaker unit and transmit it to the processor unit; the signal feedback unit is connected to the output of the power amplifier unit and is used to feedback the speaker signal and transmit it to the processor unit; the ambient sound acquisition unit is used to acquire ambient sound waves.

[0009] Furthermore, the DSP processor module includes a processor unit, a channel balance unit, and a DRC unit connected in sequence;

[0010] The output of the sound source unit, the output of the speaker adaptive control parameter acquisition module, and the function trigger unit are connected to the processor unit; the input of the power amplifier unit is connected to the DRC unit.

[0011] Furthermore, the distance sensing unit employs a ToF sensor.

[0012] Furthermore, the function triggering unit is at least one of a function button unit, a signal receiving unit, a gesture recognition unit, and a voice recognition unit;

[0013] The gesture recognition unit is connected to the image acquisition unit and the processor unit, and the voice recognition unit is connected to the ambient sound acquisition unit and the processor unit.

[0014] To address the aforementioned technical problems, this application also provides an adaptive control method for a speaker system, employing the following technical solution:

[0015] An adaptive control method for a speaker system, applied to the aforementioned speaker system, the method comprising:

[0016] Generate a speaker adaptive control trigger signal, and use the speaker adaptive control trigger signal to make the speaker system enter the adaptive environment adjustment mode;

[0017] Acquire speaker adaptive control parameters in the adaptive environment adjustment mode;

[0018] The audio parameters and power amplification factor of the audio signal are adjusted according to the speaker adaptive control parameters.

[0019] The adjusted audio signal is amplified and output according to the power amplification factor.

[0020] Furthermore, the acquisition of speaker adaptive control parameters in the adaptive environment adjustment mode specifically involves:

[0021] In the adaptive environment adjustment mode, the image of the target object, the relative distance between the target object and the speaker of the speaker system, the speaker signal of the speaker system, and the ambient sound are collected;

[0022] The facial data of the target object is used to acquire the relative distance between the target object and the speaker of the speaker system.

[0023] Furthermore, the adjustment of the audio parameters and power amplification factor of the audio signal according to the speaker adaptive control parameters specifically includes:

[0024] The audio signal is preprocessed based on the image of the target object, the relative distance between the target object and the speaker of the speaker system, the speaker signal of the speaker system, and the ambient sound. The preprocessing includes EQ, gain, and volume adjustment.

[0025] Based on the image of the target object, the relative distance between the target object and the speaker of the speaker system, the speaker signal of the speaker system, and the ambient sound, the preprocessed audio signal is digitally filtered, crosstalk canceled, phase corrected, and reverberation adjusted, and the power amplification factor of the audio signal is adjusted.

[0026] The processed audio signal is then adjusted again using the channel attenuator and the DRC dynamic range adjustment.

[0027] Furthermore, the speaker adaptive control trigger signal includes a button control signal, an infrared remote control signal, a gesture recognition signal, or a voice recognition signal.

[0028] Furthermore, after acquiring the image of the target object, the method further includes:

[0029] The target object's facial expression is recognized based on its image, and the audio signal is adjusted based on the facial expression recognition result.

[0030] Compared with the prior art, the embodiments of this application have the following main advantages:

[0031] The solution provided in this application can achieve adaptive environmental adjustment of the speaker system through a simple trigger operation, so that the listener is in the best listening position, improving sound quality and enhancing user experience. Attached Figure Description

[0032] To more clearly illustrate the solutions in this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 This is a structural block diagram of an existing speaker system;

[0034] Figure 2 This is a structural block diagram of the speaker system provided in the embodiments of this application;

[0035] Figure 3 This is a specific structural block diagram of a speaker system provided in an embodiment of this application;

[0036] Figure 4 This is another specific structural block diagram of the speaker system provided in the embodiments of this application;

[0037] Figure 5 This is a flowchart of the adaptive control method for a speaker system provided in an embodiment of this application;

[0038] Figure 6 yes Figure 5 The flowchart for the specific implementation of step S103. Detailed Implementation

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0040] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0041] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0042] This application provides a speaker system, such as... Figure 2 As shown, the speaker system includes a sound source unit 10, a power amplifier unit 20, and a speaker unit 30, as well as a function trigger unit 40, a DSP processor module 50, and a speaker adaptive control parameter acquisition module 60. DSP stands for Digital Signal Processing.

[0043] Specifically, the output terminal of the audio source unit 10, the input terminal of the power amplifier unit 20, the output terminal of the speaker adaptive control parameter acquisition module 60, and the function trigger unit 40 are connected to the DSP processor module 50, and the speaker unit 30 and the speaker adaptive control parameter acquisition module 60 are connected to the output terminal of the power amplifier unit 20; wherein, the function trigger unit 40 is used to send a speaker adaptive control trigger signal to the DSP processor module 50; the processor module is used to control the speaker adaptive control parameter acquisition module 60 to acquire speaker adaptive control parameters according to the speaker adaptive control trigger signal, and adjust the input of the power amplifier unit 20 according to the speaker adaptive control parameters. The adjustment specifically includes adjusting the audio signal output by the audio source unit 10 and adjusting the amplification factor of the power amplifier unit 20.

[0044] In this embodiment, further reference is made to... Figure 3 The DSP processor module 50 includes a processor unit 51, a channel balancing unit 52, and a DRC unit 53 connected in sequence. DRC stands for Dynamic Range Control. The output of the audio source unit 10, the output of the speaker adaptive control parameter acquisition module 60, and the function trigger unit 40 are connected to the processor unit 51. The input of the power amplifier unit 20 is connected to the DRC unit 53. That is, after the processor unit 51 receives the speaker adaptive control parameters, the processor unit 51, the channel balancing unit 52, and the DRC unit 53 process the audio signal of the audio source unit 10 in sequence based on the speaker adaptive control parameters, and then transmit it to the speaker unit 30 through the power amplifier unit 20.

[0045] In this embodiment, the types of adaptive control parameters can be determined according to the actual situation. The types of adaptive control parameters will be further explained below.

[0046] like Figure 3As shown, the speaker adaptive control parameter acquisition module 60 includes an image acquisition unit 61, a distance sensing unit 62, a signal feedback unit 63, and an ambient sound acquisition unit 64. Specifically, the image acquisition unit 61 is used to acquire the image of the target object and transmit it to the processor unit 51; the distance sensor is used to acquire the distance between the target object and the speaker unit 30 and transmit it to the processor unit 51; the signal feedback unit 63 is connected to the output of the power amplifier unit 20 and is used to feedback the speaker signal and transmit it to the processor unit 51; the ambient sound acquisition unit 64 is used to acquire ambient sound waves. The various units included in the speaker adaptive control parameter acquisition module 60 can be integrated as a whole or adapted to different positions in the speaker system as separate components, depending on the type of adaptive control parameters to be acquired.

[0047] In some embodiments, the image acquisition unit 61 is specifically a camera, which captures a face to achieve 3D imaging. The distance sensing unit 62 specifically employs a ToF sensor. ToF refers to Time of Flight. After the camera captures a face and performs face recognition through a face recognition algorithm, a sound field localization algorithm is used to measure the relative distance between the person and the speaker unit 30 of the speaker system based on the pulse time of flight. Since the speaker unit 30 contains multiple speakers, exemplarily as shown... Figure 3 The left and right speakers shown here refer to the relative positions of the person and each speaker. A speaker adaptive control parameter acquisition module 60 can be installed at the location of each speaker to collect corresponding parameters for each speaker. The ambient sound acquisition unit 64 is specifically a microphone. By acquiring ambient sound, including the direct sound from the speakers and the sound after environmental absorption, reflection, and reverberation, it obtains the ambient sound wave radiation status of the speaker system, providing a basis for the processor unit 51 to adjust the audio signal. The processor unit 51 can combine the image captured by the camera, the relative position of the person and the speakers acquired by the ToF sensor, and the ambient sound wave radiation status acquired by the microphone to generate virtual 3D image information. The processor unit 51 can further compare the virtual 3D image information with preset 3D image information to determine whether adaptive control is needed. This operation is optional and occurs before the processor unit 51 adjusts the audio signal of the sound source unit 10 according to the speaker adaptive control parameters. The signal feedback unit 63 is specifically an analog-to-digital conversion unit. After acquiring the analog signal, it performs analog-to-digital conversion to generate a digital signal, which is then transmitted to the processor unit 51.

[0048] In some embodiments, after the camera captures a human image, the processor unit 51 can also recognize the human facial expression through a facial expression recognition algorithm, determine the listener's personal preferences based on the facial expression, and then control the sound source unit 10 to play program content that meets the personal preferences based on the judgment result, or further finely calibrate the power amplifier EQ and the left and right channel balance based on the judgment result to achieve precise sound effect tuning and environmental adaptation. EQ refers to Equalizer.

[0049] In this embodiment, the parameters acquired by the image acquisition unit 61, distance sensing unit 62, signal feedback unit 63, and ambient sound acquisition unit 64 are converted into digital signals that can be recognized by the processor unit 51 according to different signal protocol specifications. When the processor unit 51 performs speaker adaptive control based on these digital signals, it first performs preprocessing of the audio signal, such as EQ, gain, and volume adjustments, based on the acquired parameters (digital signals), to adapt the speaker system parameters to the speaker unit 30. Then, it performs data comparison and analysis between the acquired parameters (digital signals) and preset parameters, and adjusts the audio signal accordingly based on the data analysis results. The system performs digital filtering, crosstalk cancellation, phase correction, and reverberation adjustment to make the directionality of the signal source for each speaker more realistic. At the same time, it adjusts the amplification factor of the power amplifier unit 20 to ensure appropriate power output from the subsequent speaker unit 30. Then, the channel balance unit 52 further adjusts the sound attenuators of each channel of the speaker system based on the data analysis results of the processor unit 51 to ensure that the sound intensity of the sound emitted by each speaker reaches the listener's position and maintains the directionality of the actual recording. Finally, the DRC unit 53 performs DRC dynamic range adjustment to obtain a suitable signal amplitude and ensure that the audio signal output is not distorted.

[0050] Furthermore, after receiving the audio signal output by the DRC unit 53, the power amplifier unit 20 amplifies the audio signal according to the adjusted power amplification factor and then transmits it to the speaker unit 30. The speaker unit 30 converts the electrical signal into sound output. At the same time, the signal feedback unit 63 feedbacks the input signal of the speaker unit 30. The feedback signal is converted into a digital signal and transmitted to the processor unit 51. It is used to monitor the sound status of the speaker system and to further adaptively adjust and control the speaker system, thereby improving the effect of adaptive control.

[0051] In this embodiment, the function triggering unit 40 is at least one of a function button unit, a signal receiving unit, a gesture recognition unit, and a voice recognition unit.

[0052] In some embodiments, when the function triggering unit 40 is a function button unit, the function button unit emits a speaker adaptive control trigger signal based on button triggering, which can be a physical button on the speaker or a touch button (a virtual button on a touchpad or touch screen). The condition for emitting the speaker adaptive control trigger signal can be that the function button is pressed, or that the function button is pressed for a preset duration. Preferably, the function button is pressed for a preset duration to avoid accidental triggering.

[0053] In some embodiments, when the function triggering unit 40 is a signal receiving unit, it specifically receives the trigger signal from an external control device. The signal receiving unit is correspondingly a communication unit. The communication unit can receive infrared remote control signals or communication signals from third-party devices such as mobile phones and tablets. When the remote control device presses a physical function button or the third-party device presses a virtual function button, it sends a speaker adaptive control trigger signal to the signal receiving unit.

[0054] In some embodiments, such as Figure 4 As shown, when the function triggering unit 40 is a gesture recognition unit, the function triggering unit 40 is also connected to the image acquisition unit 61. The gesture recognition unit recognizes the gestures in the image acquired by the image acquisition unit 61 and performs corresponding operations based on the recognized gestures. For example, when the recognized gesture corresponds to the start of the speaker system's adaptive environment adjustment mode, the speaker adaptive control trigger signal is sent to the processor unit 51 based on the recognition result, and the speaker system enters the adaptive environment adjustment mode.

[0055] In some embodiments, refer back Figure 4 When the speaker system's adaptive environment adjustment mode is triggered, if the function triggering unit 40 is a voice recognition unit, the function triggering unit 40 is also connected to the ambient sound acquisition unit 64. The voice recognition unit performs voice recognition on the human voice acquired by the ambient sound acquisition unit 64, recognizes the pre-set voice wake-up word, and sends a speaker adaptive control trigger signal to the processor unit 51 based on the recognition result, and the speaker system enters the adaptive environment adjustment mode.

[0056] The aforementioned gesture recognition and voice recognition methods can increase the freedom of triggering, allowing users to customize any trigger gesture or keyword, thus improving the user experience.

[0057] The aforementioned function triggering unit 40 can be triggered in a single instance or in a cyclic manner. A single instance means that after the adaptive adjustment is completed, the speaker system exits the adaptive environment adjustment mode, and the function triggering unit 40 needs to be triggered again for the next adaptive adjustment. A cyclic manner means that after the adaptive adjustment is triggered, the function triggering unit 40 does not need to be triggered again for the next adjustment, and the speaker system remains in the adaptive environment adjustment mode, performing real-time adaptive control based on the real-time collected speaker adaptive control parameters.

[0058] Specifically, with Figure 4 The adaptive adjustment and control process of the speaker system in this embodiment will be described in general by taking the example of the function trigger unit 40, image acquisition unit 61, distance sensing unit 62, ambient sound acquisition unit 64, and signal feedback unit 63, respectively using function buttons, camera, ToF sensor, microphone, and analog-to-digital conversion unit as examples.

[0059] During the trigger phase, press and hold the function key to enable the processor unit 51 to enter the speaker system adaptive environment adjustment mode.

[0060] During the acquisition phase, the processor unit 51 controls the image acquisition unit 61, the distance sensing unit 62, the ambient sound acquisition unit 64, and the signal feedback unit 63 to acquire the human image, the relative distance between the human and the speaker unit 30, the ambient sound, and the speaker signal, respectively.

[0061] During the adjustment phase, the processor unit 51 performs data analysis based on the human image, the relative distance between the person and the speaker unit 30, ambient sound, and speaker signal. Based on the analysis results, the processor unit 51 adjusts the audio signal. First, the processor unit 51 performs signal preprocessing such as EQ, gain, and volume. Then, the processor unit 51 performs digital filtering, crosstalk cancellation, phase correction, and reverberation adjustment on the audio signal and adjusts the amplification factor of the power amplifier unit 20. Next, the channel balance unit 52 adjusts the sound attenuator of each channel of the audio signal, and then the DRC module adjusts the DRC dynamic range of the audio signal.

[0062] During the output stage, the power amplifier unit 20 amplifies the adjusted audio signal output from the DRC unit 53 according to the adjusted amplification factor and transmits it to the speaker unit 30, through which the sound is output to the outside.

[0063] The speaker system provided in this application can achieve adaptive environmental adjustment through a simple trigger operation, so that the listener is in the best listening position, improving sound quality and enhancing user experience.

[0064] This application also provides an adaptive control method for a speaker system, applied to the speaker system described in the above embodiments, such as... Figure 5 As shown, the method includes:

[0065] S101. Generate a speaker adaptive control trigger signal, and make the speaker system enter the adaptive environment adjustment mode according to the speaker adaptive control trigger signal;

[0066] S102. Acquire speaker adaptive control parameters in the adaptive environment adjustment mode;

[0067] S103. Adjust the audio parameters and power amplification factor of the audio signal according to the speaker adaptive control parameters;

[0068] S104. Amplify the adjusted audio signal according to the power amplification factor and output it.

[0069] Combination Figures 2-4 The above methods will be explained.

[0070] In this embodiment, the speaker adaptive control trigger signal in step S101 is generated by the function trigger unit 40. The speaker adaptive control trigger signal can be any one of a button control signal, an infrared remote control signal, a gesture recognition signal, or a voice recognition signal. After the speaker adaptive control trigger signal is generated, it will be sent to the processor unit 51 of the DSP processor module 50. The processor unit 51 controls the speaker system to enter the adaptive environment adjustment mode according to the speaker adaptive control trigger signal.

[0071] Among them, gesture recognition and voice recognition can increase the freedom of triggering, allowing users to customize any trigger gesture or trigger keyword, which can be changed flexibly and improve the user experience.

[0072] When the speaker adaptive control trigger signal is a button control signal, generating the speaker adaptive control trigger signal includes: determining whether the duration of the button control signal reaches a preset duration; if so, generating the speaker adaptive control trigger signal; otherwise, not generating it. This prevents accidental button triggering.

[0073] For details regarding the generation of the speaker adaptive control trigger signal by the function trigger unit 40, please refer to the relevant embodiments of the speaker system described above, which will not be repeated here.

[0074] In this embodiment, when collecting speaker adaptive control parameters in the adaptive environment adjustment mode in step S102, the processor unit 51 of the DSP processor module 50 specifically controls the speaker adaptive control parameter acquisition module 60 to collect the speaker adaptive control parameters. The specifically collected speaker adaptive control parameters include: the image of the target object, the relative distance between the target object and the speaker of the speaker system, the speaker signal of the speaker system, and the ambient sound. The image data of the target object is used to collect the relative distance between the target object and the speaker of the speaker system. The relative distance between the target object and the speaker of the speaker system is only collected after face recognition is performed based on the image data and the recognition is successful. Specifically, the relative distance between the target object and each speaker of the speaker unit 30 of the speaker system is collected, that is, there are multiple distance parameters. The image of the target object, the relative distance between the target object and the speaker of the speaker system, the speaker signal of the speaker system, and the ambient sound are collected by the image acquisition unit 61, the distance sensing unit 62, the signal feedback unit 63, and the ambient sound acquisition unit 64, respectively. The specific content of the parameters collected by these units can be referred to the relevant embodiments of the speaker system described above, and will not be repeated here.

[0075] In this embodiment, step S103, which adjusts the audio parameters and power amplification factor of the audio signal according to the speaker adaptive control parameters, specifically includes:

[0076] S301. The audio signal is preprocessed based on the image of the target object, the relative distance between the target object and the speaker of the speaker system, the speaker signal of the speaker system, and the ambient sound. The preprocessing includes EQ, gain, and volume adjustment.

[0077] S302. Based on the image of the target object, the relative distance between the target object and the speaker of the speaker system, the speaker signal of the speaker system, and the ambient sound, perform digital filtering, crosstalk cancellation, phase correction, and reverberation adjustment on the preprocessed audio signal, and adjust the power amplification factor of the audio signal.

[0078] S303. Adjust the channel sound attenuator and DRC dynamic range again on the processed audio signal.

[0079] In this process, steps S301 and S302 are executed by processor unit 51. The adjustment of the channel sound attenuator and the DRC dynamic range adjustment in step S30 are executed by channel balancing unit 52 and DRC unit 53, respectively. After adjustment in step S301, the speaker system parameters are adapted to the speaker unit 30. During step S302, virtual 3D image information is generated based on the target object's image, the relative distance between the target object and the speaker system, and ambient sound. This virtual 3D information is compared and analyzed with preset 3D image information to determine the adjustment range of the audio parameters. Then, digital filtering, crosstalk cancellation, phase correction, and reverberation adjustment are performed based on the adjustment range. Adjusting the power amplification factor of the audio signal ensures appropriate power output from the subsequent speaker unit 30. Adjusting the channel sound attenuator ensures that the sound intensity emitted by each speaker at the listener's location maintains the same directional accuracy as the actual recording. The DRC dynamic range adjustment obtains a suitable signal amplitude, ensuring that the audio signal output is not distorted. The specific details of steps S301-S303 can be found in the relevant embodiments of the speaker system described above, and will not be repeated here.

[0080] In some embodiments, before adjusting the audio parameters and power amplification factor of the audio signal according to the speaker adaptive control parameters, the method further includes: determining whether speaker system adaptive control is needed based on the speaker adaptive control parameters; specifically, determining whether the adjustment range of the audio parameters to be adjusted, determined by comparing and analyzing the virtual 3D image information with preset 3D image information, exceeds a preset value; if so, maintaining the adaptive environment adjustment mode; otherwise, exiting the adaptive environment adjustment mode. This avoids unnecessary adaptive adjustments and reduces speaker system resource consumption and power consumption.

[0081] In some embodiments, after acquiring the portrait of the target object, the method further includes:

[0082] The system performs facial expression recognition on the target object based on its image, and adjusts the audio signal accordingly, i.e., adjusts the playback content of the sound source unit 10. It also determines the listener's personal preferences based on facial expressions, and controls the sound source unit 10 to play program content that meets those preferences. Alternatively, it further refines the power amplifier EQ and left / right channel balance based on the determination results, achieving precise sound effect tuning and environmental adaptability.

[0083] The adaptive control method for speaker systems proposed in this invention can achieve adaptive environmental adjustment of the speaker system through a simple trigger operation, so that the listener is in the best listening position, improving sound quality and enhancing user experience.

[0084] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A speaker system, comprising a sound source unit, a power amplifier unit, and a speaker unit, characterized in that, The speaker system also includes: DSP processor module, speaker adaptive control parameter acquisition module, and function trigger unit; The output terminal of the sound source unit, the input terminal of the power amplifier unit, the output terminal of the speaker adaptive control parameter acquisition module, and the function trigger unit are connected to the DSP processor module, and the speaker unit and the speaker adaptive control parameter acquisition module are connected to the output terminal of the power amplifier unit. The speaker unit includes multiple speakers, and the speaker adaptive control parameter acquisition module includes an image acquisition unit, a distance sensing unit, a signal feedback unit, and an ambient sound acquisition unit. The image acquisition unit is used to acquire the image of the target object and transmit it to the DSP processor module; the distance sensing unit is used to acquire the distance between the target object and each speaker of the speaker unit and transmit it to the DSP processor module; the signal feedback unit is connected to the output of the power amplification unit and is used to feedback the speaker signal and transmit it to the DSP processor module; the ambient sound acquisition unit is used to acquire ambient sound waves. The DSP processor module combines the human image captured by the image acquisition unit, the relative position of the target object and each speaker of the speaker unit acquired by the distance sensing unit, and the radiation status of the ambient sound waves acquired by the ambient sound acquisition unit to generate virtual 3D image information. The virtual 3D image information is then compared with preset 3D image information to adjust the audio parameters of the audio signal output by the sound source unit and the amplification factor of the power amplification unit.

2. The speaker system according to claim 1, characterized in that, The DSP processor module includes a processor unit, a channel balance unit, and a DRC unit connected in sequence. The output of the sound source unit, the output of the speaker adaptive control parameter acquisition module, and the function trigger unit are connected to the processor unit; the input of the power amplifier unit is connected to the DRC unit.

3. The speaker system according to claim 1, characterized in that, The distance sensing unit uses a ToF sensor.

4. The speaker system according to any one of claims 1 to 3, characterized in that, The function triggering unit is at least one of the following: a function button unit, a communication unit, a gesture recognition unit, and a voice recognition unit; The gesture recognition unit is connected to the image acquisition unit and the processor unit, and the voice recognition unit is connected to the ambient sound acquisition unit and the processor unit.

5. An adaptive control method for a speaker system, applied to the speaker system according to any one of claims 1 to 4, characterized in that, The method includes: Generate a speaker adaptive control trigger signal, and use the speaker adaptive control trigger signal to make the speaker system enter the adaptive environment adjustment mode; In the adaptive environment adjustment mode, adaptive control parameters of the speaker are acquired; the adaptive control parameters include the image of the target object, the relative distance between the target object and the speaker of the speaker system, the speaker signal of the speaker system, and the ambient sound, wherein the image data of the target object is used to acquire the relative distance between the target object and the speaker of the speaker system; Virtual 3D image information is generated based on the speaker's adaptive control parameters, and the virtual 3D image information is compared with preset 3D image information. Based on the comparison results, the audio parameters and power amplification factor of the audio signal are adjusted. The adjusted audio signal is amplified and output according to the power amplification factor.

6. The adaptive control method for the speaker system according to claim 5, characterized in that, The step of generating virtual 3D image information based on the speaker's adaptive control parameters, comparing the virtual 3D image information with preset 3D image information, and adjusting the audio parameters and power amplification factor of the audio signal based on the comparison result specifically includes: The audio signal is preprocessed based on the image of the target object, the relative distance between the target object and the speaker of the speaker system, the speaker signal of the speaker system, and the ambient sound. The preprocessing includes EQ, gain, and volume adjustment. Based on the image of the target object, the relative distance between the target object and the speaker of the speaker system, the speaker signal of the speaker system, and the ambient sound, virtual 3D image information is generated. The virtual 3D information is compared and analyzed with the preset 3D image information to determine the adjustment range of the audio parameters to be adjusted. Based on the adjustment range, the preprocessed audio signal is subjected to digital filtering, crosstalk cancellation, phase correction, and reverberation adjustment, and the power amplification factor of the audio signal is adjusted. The processed audio signal is then adjusted again using the channel attenuator and the DRC dynamic range adjustment.

7. The adaptive control method for a speaker system according to claim 5, characterized in that, The speaker's adaptive control trigger signal includes button control signal, infrared remote control signal, gesture recognition signal, or voice recognition signal.

8. The adaptive control method for a speaker system according to claim 5, characterized in that, After acquiring the portrait of the target object, the method further includes: The target object's facial expression is recognized based on its image, and the audio signal is adjusted based on the facial expression recognition result.

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