WO2021135235A1 - Automatic debugging method and system for loudspeaker - Google Patents

Abstract

Disclosed are an automatic debugging method and system for a loudspeaker. The method comprises: generating a first test signal, and sending the first test signal to a loudspeaker module, wherein the loudspeaker module is composed of one or more loudspeaker units; acquiring a first test parameter of the loudspeaker module, and determining a target debugging mode according to the number of loudspeaker modules; processing the first test signal according to a resonance frequency of the loudspeaker module to obtain a second test signal, and sending the second test signal to the loudspeaker module; collecting a harmonic distortion curve of the loudspeaker module, and determining a second test parameter of the loudspeaker module by means of detecting an amplitude-frequency response curve of the loudspeaker module and the harmonic distortion curve of the loudspeaker module; and processing the first test parameter and the second test parameter according to the indication of the target debugging mode to obtain presettings of the loudspeaker module. By implementing the embodiments of the present application, the debugging efficiency and effect of the loudspeaker can be effectively improved.

Description

Method and system for automatic adjustment of loudspeaker Technical field

This application relates to the technical field of loudspeaker control, and in particular to a method and system for automatic loudspeaker debugging.

Background technique

The speaker system refers to the equipment that converts the electric signal of the sound wave signal of the original sound field through some electronic equipment to reproduce the sound wave signal. Among them, in order to ensure that the output of the speaker fully restores the original sound field sound, it is usually necessary to debug the speaker, and the debugging of the existing speaker is often done manually by professional electroacoustic engineers relying on experience, and the debugging efficiency and effect are usually not good.

Summary of the invention

The embodiments of the present application disclose a speaker automatic debugging method and system, which can effectively improve the debugging efficiency and effect of the speaker.

The first aspect of the embodiments of the present application discloses an automatic speaker debugging method, the method includes:

Generating a first test signal, and sending the first test signal to the speaker module; wherein the speaker module is composed of one or more speaker units;

Acquire the first test parameter of the speaker module, and determine the target debugging mode according to the number of the speaker module; wherein, the first test parameter includes at least the resonance frequency and amplitude-frequency response curve of the speaker module;

Processing the first test signal according to the resonance frequency of the speaker module to obtain a second test signal, and sending the second test signal to the speaker module;

Collecting the harmonic distortion curve of the speaker module, and determining the second test parameter of the speaker module by detecting the amplitude-frequency response curve of the speaker module and the harmonic distortion curve of the speaker module;

According to the instruction of the target debugging mode, the first test parameter and the second test parameter are processed to obtain the preset of the speaker module.

As an optional implementation manner, in the first aspect of the embodiments of the present application, the first test parameter further includes a delay value, a phase-frequency response curve, and an impedance curve of the speaker module, and the acquisition of the speaker module The first test parameters of the module include:

Obtain the first playback signal of the speaker module for the first test signal, and obtain the impulse response curve and phase-frequency response curve of the speaker module according to the first test signal and the first playback signal, and Determining the time delay value of the speaker module by the impulse response curve, and performing Fourier transform on the impulse response curve to obtain the amplitude-frequency response curve of the speaker module;

The impedance curve of the speaker module is obtained according to the current signal and the voltage signal when the speaker module outputs the first playback signal, and the resonance frequency of the speaker module is determined according to the impedance curve of the speaker module.

As an optional implementation manner, in the first aspect of the embodiments of the present application, if the second test parameter includes the protection voltage and the maximum sound pressure level curve of the speaker module, the The amplitude-frequency response curve and the harmonic distortion curve of the speaker module determine the second test parameter of the speaker module, including:

Determine the working frequency band of the loudspeaker module according to the amplitude-frequency response curve of the loudspeaker module, and obtain the initial amplitude-frequency response curve from the amplitude-frequency response curve of the loudspeaker module according to the working frequency band, and obtain the initial amplitude-frequency response curve from the amplitude-frequency response curve of the loudspeaker module; Obtain the initial harmonic distortion curve on the wave distortion curve;

Judging whether the maximum distortion value in the initial harmonic distortion curve is greater than or equal to a first preset value;

If yes, determine that the current signal voltage is the protection voltage of the speaker module, and the initial amplitude-frequency response curve is the maximum sound pressure level curve of the speaker module;

If not, update the current signal voltage, and obtain the test amplitude-frequency response curve and the test harmonic distortion curve of the speaker module;

By comparing the initial amplitude-frequency response curve and the test amplitude-frequency response curve, an average sound pressure level deviation value is obtained, and it is determined whether the average sound pressure level deviation value is less than a second preset value;

If yes, use the current signal voltage before being updated as the protection voltage of the speaker module, and use the initial amplitude-frequency response curve as the maximum sound pressure level curve of the speaker module;

If not, determine whether the maximum distortion value in the test harmonic distortion curve is greater than or equal to the first preset value;

If yes, use the updated current signal voltage as the protection voltage of the speaker module, and use the test amplitude-frequency response curve as the maximum sound pressure level curve of the speaker module;

If not, use the test amplitude-frequency response curve as the initial amplitude-frequency response curve, and use the test harmonic distortion curve as the initial harmonic distortion curve, and perform the update of the current signal voltage, Until the protection voltage of the speaker module and the maximum sound pressure level curve of the speaker module are determined.

As an optional implementation manner, in the first aspect of the embodiments of the present application, if the target debugging mode is the single-channel mode, the first test parameter and the first test parameter are processed according to the instruction of the target debugging mode. 2. Test parameters to obtain the preset of the speaker module, including:

A high-pass filter is generated according to the resonance frequency of the speaker module, and an octave bandwidth is determined from the effective area of the amplitude-frequency response curve of the speaker module, wherein the effective area is the amplitude-frequency response of the speaker module The area with the greatest sensitivity on the curve, and calculate the arithmetic mean of the sound pressure level of the bandwidth, and determine the target straight line corresponding to the arithmetic mean of the sound pressure level, and obtain the target straight line and the amplitude of the speaker module The intersection frequency point of the frequency response curve, and generate a low-pass filter according to the intersection frequency point with the highest frequency, and generate the target amplitude-frequency response curve of the loudspeaker module according to the high-pass filter and the low-pass filter Target phase frequency response curve, and by fitting the amplitude frequency response curve of the loudspeaker module and the target amplitude frequency response curve of the loudspeaker module, and the phase frequency response curve of the loudspeaker module and the target phase frequency of the loudspeaker module Response curve, obtain the filter parameter of the speaker module, and pack the filter parameter and the protection voltage into a preset of the speaker module.

As an optional implementation manner, in the first aspect of the embodiments of the present application, if the target debugging mode is a multi-channel mode, the first test parameter and the first test parameter are processed according to the instruction of the target debugging mode. 2. Test parameters to obtain the preset of the speaker module, including:

Synthesize the amplitude-frequency response curve of each of the loudspeaker modules to obtain the gain setting value of each of the loudspeaker modules, synthesize the delay value of each of the loudspeaker modules to obtain the delay setting value of each of the loudspeaker modules, and Combining the maximum sound pressure level curve and resonance frequency of each speaker module to determine a crossover point, and generate a first high-pass filter and a first low-pass filter for each speaker module according to the crossover point, and Determine the bandwidth of one octave from the effective area of the amplitude-frequency response curve of each loudspeaker module, where the effective area is the most sensitive area on the amplitude-frequency response curve of the loudspeaker module, and calculate each The arithmetic mean of the sound pressure level of the bandwidth; and determining the target straight line corresponding to the arithmetic mean of the sound pressure level of each of the bandwidths, and obtaining the amplitude-frequency response of each of the target straight lines and each of the speaker modules The intersection frequency point of the curve, and the second low-pass filter and the second high-pass filter of each speaker module are generated according to the intersection frequency point, and by comparing the resonance frequency of each speaker module, from each speaker module The first high-pass filter, the first low-pass filter, the second low-pass filter, and the second high-pass filter of the speaker module determine the target low-pass filter and the target high-pass filter of each of the speaker modules, and Generate the target amplitude-frequency response curve of each speaker module according to the gain setting value, target high-pass filter, and target low-pass filter of each speaker module, and according to the target high-pass filter of each speaker module And a target low-pass filter to generate the target phase-frequency response curve of each speaker module; and, by fitting the amplitude-frequency response curve and target amplitude-frequency response curve of each speaker module, and each speaker The phase-frequency response curve and the target phase-frequency response curve of the module are used to obtain the filter parameters of each loudspeaker module, and the filter parameters, protection voltage and time delay setting values of each loudspeaker module are packaged into each The presets of the speaker module are described.

The second aspect of the embodiments of the present application discloses an automatic speaker debugging system, which includes:

The measurement signal module is used to generate a first test signal and send the first test signal to the speaker module; wherein, the speaker module is composed of one or more speaker units;

The control processing module is configured to obtain the first test parameter of the speaker module, and determine the target debugging mode according to the number of the speaker module; wherein, the first test parameter includes at least the resonance frequency and amplitude frequency of the speaker module Response curve

The measurement signal module is further configured to process the first test signal according to the resonance frequency of the speaker module to obtain a second test signal, and send the second test signal to the speaker module;

The control processing module is also used to collect the harmonic distortion curve of the speaker module, and determine the second harmonic distortion curve of the speaker module by detecting the amplitude-frequency response curve of the speaker module and the harmonic distortion curve of the speaker module. Test parameters;

The signal processing module is further configured to process the first test parameter and the second test parameter according to the instruction of the target debugging mode to obtain the preset of the speaker module.

As an optional implementation manner, in the second aspect of the embodiment of the present application, the first test parameter further includes the delay value, phase-frequency response curve, and impedance curve of the speaker module, and the control processing module uses The specific method for obtaining the first test parameter of the speaker module is as follows:

The control processing module is configured to obtain a first playback signal of the speaker module for the first test signal, and obtain an impulse response curve of the speaker module according to the first test signal and the first playback signal , And determining the time delay value and phase-frequency response curve of the speaker module according to the impulse response curve, and performing Fourier transform on the impulse response curve to obtain the amplitude-frequency response curve of the speaker module; and, according to The loudspeaker module outputs the current signal and the voltage signal when the first playing signal is output to obtain the impedance curve of the loudspeaker module, and the resonance frequency of the loudspeaker module is determined according to the impedance curve of the loudspeaker module.

As an optional implementation manner, in the second aspect of the embodiments of the present application, if the second test parameter includes the protection voltage and the maximum sound pressure level curve of the speaker module, the control processing module is configured to pass the detection The method for determining the second test parameter of the speaker module by the amplitude-frequency response curve of the speaker module and the harmonic distortion curve of the speaker module is specifically as follows:

The control processing module is configured to determine the working frequency band of the speaker module according to the amplitude-frequency response curve of the speaker module, and obtain an initial amplitude-frequency response curve from the amplitude-frequency response curve of the speaker module according to the working frequency band, And obtain the initial harmonic distortion curve from the harmonic distortion curve of the loudspeaker module; determine whether the maximum distortion value in the initial harmonic distortion curve is greater than or equal to the first preset value; and, if the maximum distortion value in the initial harmonic distortion curve is greater than or equal to the At the first preset value, it is determined that the current signal voltage is the protection voltage of the speaker module, and the initial amplitude-frequency response curve is the maximum sound pressure level curve of the speaker module; and, when it is less than the first preset value When the current signal voltage is updated, the test amplitude-frequency response curve and the test harmonic distortion curve of the speaker module are obtained; and, by comparing the initial amplitude-frequency response curve and the test amplitude-frequency response curve, it is obtained Average sound pressure level deviation value, and determine whether the average sound pressure level deviation value is less than a second preset value; and, when it is less than the second preset value, use the current signal voltage before being updated as the The protection voltage of the loudspeaker module, and the initial amplitude-frequency response curve as the maximum sound pressure level curve of the loudspeaker module; and, when it is greater than or equal to the second preset value, judging the test harmonic distortion Whether the maximum distortion value in the curve is greater than or equal to the first preset value; and, when greater than or equal to the first preset value, use the updated current signal voltage as the protection voltage of the speaker module , And use the test amplitude-frequency response curve as the maximum sound pressure level curve of the loudspeaker module; and, when it is less than the first preset value, use the test amplitude-frequency response curve as the initial amplitude-frequency response Curve, and use the test harmonic distortion curve as the initial harmonic distortion curve, and perform the update of the current signal voltage until the protection voltage of the speaker module and the maximum sound of the speaker module are determined Pressure grade curve.

As an optional implementation manner, in the second aspect of the embodiments of the present application, if the target debugging mode is the single-channel mode, the signal processing module is configured to process the first The method for obtaining the preset of the speaker module for the first test parameter and the second test parameter is specifically as follows:

The signal processing module is configured to generate a high-pass filter according to the resonance frequency of the speaker module, and determine a bandwidth of one octave from the effective area of the amplitude-frequency response curve of the speaker module, wherein the effective area is The most sensitive area on the amplitude-frequency response curve of the loudspeaker module, and calculating the arithmetic mean of the sound pressure level of the bandwidth, and determining the target straight line corresponding to the arithmetic mean of the sound pressure level, and obtaining the target The intersection frequency point of the straight line and the amplitude-frequency response curve of the speaker module, and the low-pass filter is generated according to the intersection frequency point with the highest frequency, and the speaker is generated according to the high-pass filter and the low-pass filter The target amplitude-frequency response curve and target phase-frequency response curve of the module, and by fitting the amplitude-frequency response curve of the loudspeaker module and the target amplitude-frequency response curve of the loudspeaker module, and the phase-frequency response curve of the loudspeaker module and The target phase-frequency response curve of the loudspeaker module is used to obtain the filter parameters of the loudspeaker module, and the filter parameters and the protection voltage are packaged as a preset of the loudspeaker module.

As an optional implementation manner, in the second aspect of the embodiments of the present application, if the target debugging mode is the multi-channel mode, the signal processing module is configured to process the first The method for obtaining the preset of the speaker module for the first test parameter and the second test parameter is specifically as follows:

The signal processing module is configured to synthesize the amplitude-frequency response curve of each of the loudspeaker modules to obtain the gain setting value of each of the loudspeaker modules, and synthesize the delay value of each of the loudspeaker modules to obtain each of the loudspeakers The time delay setting value of the module, and the maximum sound pressure level curve and resonance frequency of each speaker module are combined to determine the crossover point, and the first high-pass filter and the first high-pass filter of each speaker module are generated according to the crossover point. A first low-pass filter, and a bandwidth of one octave is determined from the effective area of the amplitude-frequency response curve of each speaker module, wherein the effective area is the maximum sensitivity on the amplitude-frequency response curve of the speaker module And calculate the arithmetic mean of the sound pressure level of each of the bandwidths; and determine the target straight line corresponding to the arithmetic mean of the sound pressure level of each of the bandwidths, and obtain each of the target straight lines and each The intersection frequency point of the amplitude-frequency response curve of the speaker module, and the second low-pass filter and the second high-pass filter of each speaker module are generated according to the intersection frequency point, and by comparing each of the speaker modules Determine the target low-pass filter of each speaker module from the first high-pass filter, first low-pass filter, second low-pass filter, and second high-pass filter of each speaker module Generator and target high-pass filter, and generate the target amplitude-frequency response curve of each speaker module according to the gain setting value, target high-pass filter, and target low-pass filter of each speaker module, and generate the target amplitude-frequency response curve of each speaker module according to each speaker module. The target high-pass filter and target low-pass filter of the speaker module generate a target phase-frequency response curve of each speaker module; and, by fitting the amplitude-frequency response curve and target amplitude-frequency response of each speaker module Curve, and the phase-frequency response curve and target phase-frequency response curve of each speaker module, obtain the filter parameter of each speaker module, and combine the filter parameters and protection voltage of each speaker module in time The delay setting value is packaged as a preset of each speaker module.

The third aspect of the embodiments of the present application discloses an automatic speaker debugging system, which includes:

A memory storing executable program codes;

A processor coupled with the memory;

The processor calls the executable program code stored in the memory to execute the steps of the speaker automatic debugging method disclosed in the first aspect of the embodiments of the present application.

The fourth aspect of the embodiments of the present application discloses a computer-readable storage medium on which computer instructions are stored. When the computer instructions are executed, the computer executes the steps of the speaker automatic debugging method disclosed in the first aspect of the embodiments of the present application.

Compared with the prior art, the embodiments of the present application have the following beneficial effects:

In the embodiment of the present application, a first test signal is generated, and the first test signal is sent to the speaker module; wherein the speaker module is composed of one or more speaker units; the first test parameter of the speaker module is acquired , And determine the target debugging mode according to the number of the speaker modules; process the first test signal according to the resonance frequency of the speaker module to obtain a second test signal, and send the second test signal to the speaker module; Collect the harmonic distortion curve of the loudspeaker module, and determine the second test parameter of the loudspeaker module by detecting the amplitude-frequency response curve of the loudspeaker module and the harmonic distortion curve of the loudspeaker module; according to the target debugging mode To obtain the preset of the speaker module by processing the first test parameter and the second test parameter. By implementing this method, based on the internal connection between the speaker modules at the bottom of the speaker and between the speaker module and the cabinet, the speaker module is automatically debugged, which effectively improves the efficiency and effect of speaker debugging.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. A person of ordinary skill in the art can obtain other drawings based on these drawings without paying any creative labor.

FIG. 1 is a schematic flowchart of a method for automatically adjusting a loudspeaker disclosed in an embodiment of the present application;

FIG. 2 is a schematic flowchart of step 102 in FIG. 1;

FIG. 3 is a schematic flowchart of step 106 in FIG. 1;

4 is a schematic structural diagram of a speaker automatic debugging system disclosed in an embodiment of the present application;

Fig. 5 is a schematic structural diagram of a speaker automatic tuning system disclosed in an embodiment of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

It should be noted that the terms "including", "having" and any variations thereof in the embodiments of the present application and the drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes unlisted steps or units, or optionally also includes Other steps or units inherent to these processes, methods, products or equipment.

The embodiment of the application discloses a speaker automatic debugging method and system, which can effectively improve the debugging efficiency and effect of the speaker, which will be described in detail below.

Example one

Please refer to FIG. 1. FIG. 1 is a schematic flowchart of a speaker automatic debugging method disclosed in an embodiment of the present application. The speaker automatic debugging method shown in FIG. 1 may specifically include the following steps:

101. Generate a first test signal, and send the first test signal to a speaker module, where the speaker module is composed of one or more speaker units.

Wherein, if the speaker module includes multiple speaker units, the multiple speakers may be of the same type and connected in series or parallel, and the first test signal may be a pink noise signal, a frequency sweep signal, etc.

102. Acquire a first test parameter of the speaker module, where the first test parameter includes at least a resonance frequency and an amplitude-frequency response curve of the speaker module.

Wherein, in the embodiment of the present application, the first test parameter may also include the delay value, phase-frequency response curve, and impedance curve of the speaker module. FIG. 2 is a schematic flowchart of step 102. As shown in FIG. 2, step 102 includes the following steps :

1021. Obtain a first playback signal of the speaker module for the first test signal, and obtain an impulse response curve and a phase-frequency response curve of the speaker module according to the first test signal and the first playback signal.

Optionally, the first playback signal for the first test signal may be collected by a microphone device, and the microphone device may interact with the automatic speaker debugging system in a wireless or wired manner.

1022. Determine the time delay value of the loudspeaker module according to the impulse response curve of the loudspeaker module, and perform Fourier transform on the impulse response curve of the loudspeaker module to obtain the amplitude-frequency response curve of the loudspeaker module.

In the embodiment of the present application, after obtaining the impulse response curve of the speaker module according to the first test signal and the first playback signal, the impulse response generated by the reflected sound can also be removed in the time domain by adding a window; The Fourier transform of the impulse response curve of the module to obtain the amplitude-frequency response curve of the loudspeaker module includes: performing Fourier transform on the processed impulse response curve of the loudspeaker module to obtain the amplitude-frequency response curve of the loudspeaker module. The implementation of this method can improve the accuracy of the measurement and achieve a better debugging effect.

1023. Obtain an impedance curve of the speaker module according to the current signal and the voltage signal when the speaker module outputs the first playback signal.

1024. Determine the resonance frequency of the speaker module according to the impedance curve of the speaker module.

103. Determine the target debugging mode according to the number of speaker modules.

104. Process the first test signal according to the resonance frequency of the speaker module to obtain a second test signal, and send the second test signal to the speaker module.

105. Collect the harmonic distortion curve of the speaker module.

106. Determine the second test parameter of the speaker module by detecting the amplitude-frequency response curve of the speaker module and the harmonic distortion curve of the speaker module.

In the embodiment of the present application, the second test parameter may include the protection voltage and the maximum sound pressure level curve of the speaker module. FIG. 3 is a schematic flowchart of step 106. As shown in FIG. 3, step 106 may include the following steps:

1061 Determine the working frequency band of the loudspeaker module according to the amplitude-frequency response curve of the loudspeaker module, and according to the working frequency band, obtain the initial amplitude-frequency response curve from the amplitude-frequency response curve of the loudspeaker module, and obtain the harmonic distortion curve of the loudspeaker module Initial harmonic distortion curve.

Among them, determining the working frequency band of the loudspeaker module according to the amplitude-frequency response curve of the loudspeaker module includes: taking a bandwidth of one octave in the area with the greatest sensitivity on the amplitude-frequency response curve of the loudspeaker module, and taking the bandwidth according to 1/3otc. Calculate the arithmetic mean of the sound pressure level corresponding to the bandwidth at four points, and determine the working frequency band of the loudspeaker module according to the frequency at which the arithmetic mean drops 10dB and the intersection frequency of the amplitude-frequency response curve of the loudspeaker module.

1062. Determine whether the maximum distortion value in the initial harmonic distortion curve is greater than or equal to the first preset value; if yes, perform step 1063; if not, perform step 1064.

1063. Determine that the current signal voltage is the protection voltage of the speaker module, and the initial amplitude-frequency response curve is the maximum sound pressure level curve of the speaker module.

1064. Update the current signal voltage, and obtain the test amplitude-frequency response curve and test harmonic distortion curve of the speaker module.

1065. Obtain an average sound pressure level deviation value by comparing the initial amplitude-frequency response curve and the test amplitude-frequency response curve, and determine whether the average sound pressure level deviation value is less than the second preset value. If yes, go to step 1066; if not, go to step 1067.

1066. Use the current signal voltage before updating as the protection voltage of the speaker module, and use the initial amplitude-frequency response curve as the maximum sound pressure level curve of the speaker module.

1067. Determine whether the maximum distortion value in the test harmonic distortion curve is greater than or equal to the first preset value, if yes, perform step 1068; if not, perform step 1069.

1068. Use the updated current signal voltage as the protection voltage of the speaker module, and use the test amplitude-frequency response curve as the maximum sound pressure level curve of the speaker module.

1069. Use the test amplitude-frequency response curve as the initial amplitude-frequency response curve, and use the test harmonic distortion curve as the initial harmonic distortion curve, and perform step 1064.

107. According to the instruction of the target debugging mode, process the first test parameter and the second test parameter to obtain the preset of the speaker module.

In the embodiment of the present application, if the target debugging mode is the single-channel mode, the first test parameter and the second test parameter are processed according to the instructions of the target debugging mode to obtain the preset of the speaker module, including:

Generate a high-pass filter according to the resonance frequency of the speaker module, and determine an octave bandwidth from the effective area of the amplitude-frequency response curve of the speaker module, where the effective area is the most sensitive area on the amplitude-frequency response curve of the speaker module;

Calculate the arithmetic mean of the sound pressure level of the above bandwidth, and determine the target straight line corresponding to the arithmetic mean of the sound pressure level of the bandwidth, and obtain the intersection frequency point of the target straight line and the amplitude-frequency response curve of the loudspeaker module, and based on the highest frequency The intersecting frequency point generates a low-pass filter;

Generate the target amplitude-frequency response curve and target phase-frequency response curve of the loudspeaker module according to the high-pass filter and low-pass filter, and fit the amplitude-frequency response curve of the loudspeaker module and the target amplitude-frequency response curve of the loudspeaker module, and the target amplitude-frequency response curve of the loudspeaker module. The phase frequency response curve and the target phase frequency response curve of the speaker module are used to obtain the filter parameters of the speaker module;

Pack the filter parameters and the protection voltage of the speaker module as the preset of the speaker module.

If the target debugging mode is the multi-channel mode, follow the instructions of the target debugging mode to process the first test parameter and the second test parameter to obtain the presets of the speaker module, including:

Synthesize the amplitude-frequency response curve of each loudspeaker module to obtain the gain setting value of each loudspeaker module, synthesize the delay value of each loudspeaker module to obtain the delay setting value of each loudspeaker module, and synthesize the maximum sound of each loudspeaker module The pressure level curve and resonance frequency determine the frequency division point;

In the embodiment of the present application, synthesizing the amplitude-frequency response curve of each speaker module to obtain the gain setting value of each speaker module may include:

Take one octave bandwidth in the sensitivity area of the amplitude-frequency response curve of each speaker module, and take four points in each bandwidth according to 1/3otc to calculate the arithmetic mean of the sound pressure level corresponding to each bandwidth , And the frequency at which the arithmetic mean of sound pressure level drops by 3dB and the frequency of the intersection of the loudspeaker module's amplitude-frequency response curve, determine the effective frequency band of each loudspeaker module, and calculate the average sound pressure level in the effective frequency band, and The gain setting value of each speaker module is determined based on the magnitude relationship of the average sound pressure level of the effective frequency band of the speaker module.

Integrating the maximum sound pressure level curve and resonance frequency of each speaker module to determine the crossover point, including: taking the resonance frequency of the speaker module with the highest frequency as the reference frequency, and obtaining the crossover frequency point of the maximum sound pressure level curve of all speaker modules, It is determined whether the frequency of the crossover frequency point is greater than the reference frequency, if it is greater, the crossover frequency point is used to determine the frequency division point, and if it is less than or equal to, the reference frequency is used to determine the frequency division point. By implementing this method, it is possible to avoid damage to the speaker module due to too low operating frequency.

The first high-pass filter and the first low-pass filter of each speaker module are generated according to the crossover point, and an octave bandwidth is determined from the effective area of the amplitude-frequency response curve of each speaker module, where the effective area is The most sensitive area on the amplitude-frequency response curve of the loudspeaker module, and the calculation of the arithmetic mean of the sound pressure level of each bandwidth; and determine the target straight line corresponding to the arithmetic mean of the sound pressure level of each bandwidth, and obtain each target The intersection frequency point of the straight line and the amplitude-frequency response curve of each speaker module, and the second low-pass filter and the second high-pass filter of each speaker module are generated according to the intersection frequency point; wherein, the sound pressure level of each bandwidth The arithmetic mean can be calculated by taking 4 points on the bandwidth according to 1/3otc, and the target straight line is at the point where the arithmetic mean of the sound pressure level of the bandwidth is reduced by 10dB;

By comparing the resonance frequency of each speaker module, determine the target low of each speaker module from the first high-pass filter, first low-pass filter, second low-pass filter, and second high-pass filter of each speaker module. The target amplitude-frequency response curve of each speaker module is generated according to the gain setting value of each speaker module, the target high-pass filter and the target low-pass filter, and the target amplitude-frequency response curve of each speaker module is generated. The target high-pass filter and the target low-pass filter generate the target phase-frequency response curve of each speaker module; and, by fitting the amplitude-frequency response curve and target amplitude-frequency response curve of each speaker module, and the target amplitude-frequency response curve of each speaker module The phase-frequency response curve and the target phase-frequency response curve are obtained to obtain the filter parameters of each speaker module, and the filter parameters, protection voltage and time delay setting values of each speaker module are packaged into the presets of each speaker module.

Among them, it should be noted that when the number of channels is greater than or equal to 3, the number of frequency division points is the number of channels minus 1. According to each frequency division point, the first low-pass filter and the first high-pass filter can be obtained respectively. Taking 3 channels as an example, by comparing the resonance frequency of each speaker module, determine from the first high-pass filter, first low-pass filter, second low-pass filter, and second high-pass filter of each speaker module The implementation of the target low-pass filter and the target high-pass filter of each speaker module is introduced: suppose that a, b, and c represent 3 different speaker modules, and F1, F2, F3 represent the resonance frequencies of the 3 speaker modules , D and E are the crossover points of the three speaker modules. At this time, the first high-pass filter of each speaker module generated according to the crossover point includes the first high-pass filter generated according to D and the first high-pass filter generated according to E The first high-pass filter, in the same way, the first low-pass filter of each speaker module generated according to the crossover point may include a first low-pass filter generated according to D and a first low-pass filter generated according to E , If F1<F2<F3, and the frequency of D is less than E, based on this description, the target high-pass filter of a is the second high-pass filter generated based on the intersection frequency point, and the target low-pass filter of a is generated based on D The first low-pass filter; the target high-pass filter of b is the first high-pass filter generated according to D, the target low-pass filter of b is the first low-pass filter generated according to E; the target high-pass filter of c is The first high-pass filter generated according to E, and the target low-pass filter of c is the second low-pass filter generated according to the intersection frequency point.

By implementing the above method, the debugging efficiency and effect of the loudspeaker are effectively improved, and the situation that the loudspeaker module is damaged due to the too low working frequency can be avoided, the accuracy of the measurement can be improved, and a better debugging effect can be achieved.

Example two

Please refer to FIG. 4. FIG. 4 is a schematic structural diagram of a speaker automatic tuning system disclosed in an embodiment of the present application. The speaker automatic tuning system shown in FIG. 4 may include:

The measurement signal module 401 is used to generate a first test signal and send the first test signal to the speaker module; wherein the speaker module is composed of one or more speaker units.

The control processing module 402 is configured to obtain the first test parameter of the speaker module, and determine the target debugging mode according to the number of the speaker module.

The measurement signal module 401 is further configured to process the first test signal according to the resonance frequency of the speaker module to obtain a second test signal, and send the second test signal to the speaker module.

The control processing module 402 is also used to collect the harmonic distortion curve of the loudspeaker module, and determine the second test parameter of the loudspeaker module by detecting the amplitude-frequency response curve of the loudspeaker module and the harmonic distortion curve of the loudspeaker module.

The signal processing module 403 is also used to process the first test parameter and the second test parameter according to the instruction of the target debugging mode to obtain the preset of the speaker module.

As an optional implementation manner, in this embodiment of the present application, the manner in which the control processing module 402 is used to obtain the first test parameter of the speaker module may specifically be:

The control processing module 402 is used to obtain the first playback signal of the speaker module for the first test signal, and obtain the impulse response curve and the phase-frequency response curve of the speaker module according to the first test signal and the first playback signal, and according to the impulse response The curve determines the delay value of the loudspeaker module, and performs Fourier transform on the impulse response curve to obtain the amplitude-frequency response curve of the loudspeaker module; and, according to the current signal and voltage signal when the loudspeaker module outputs the first playback signal, the loudspeaker module is obtained The impedance curve of the loudspeaker module and the resonance frequency of the loudspeaker module are determined according to the impedance curve of the loudspeaker module.

In the embodiment of the present application, the control processing module 402 is also used to obtain the impulse response curve of the loudspeaker module according to the first test signal and the first playback signal, and then to window the pulse generated by the reflected sound in the time domain. Response removal; the control processing module 402 is used to Fourier transform the impulse response curve of the loudspeaker module to obtain the amplitude-frequency response curve of the loudspeaker module. The method is specifically: the control processing module 402 is used to control the impulse response of the processed loudspeaker module The curve is Fourier transformed to obtain the amplitude-frequency response curve of the loudspeaker module. The implementation of this method can improve the accuracy of the measurement and achieve a better debugging effect.

Further, the method for the control processing module 402 to determine the second test parameter of the speaker module by detecting the amplitude-frequency response curve of the speaker module and the harmonic distortion curve of the speaker module is specifically as follows:

The control processing module 402 is used to determine the working frequency band of the loudspeaker module according to the amplitude-frequency response curve of the loudspeaker module, and obtain the initial amplitude-frequency response curve from the amplitude-frequency response curve of the loudspeaker module according to the working frequency band, and obtain the initial amplitude-frequency response curve from the amplitude-frequency response curve of the loudspeaker module. Obtain the initial harmonic distortion curve from the wave distortion curve; determine whether the maximum distortion value in the initial harmonic distortion curve is greater than or equal to the first preset value; and, when it is greater than or equal to the first preset value, determine that the current signal voltage is The protection voltage of the speaker module, the initial amplitude-frequency response curve is the maximum sound pressure level curve of the speaker module; and, when it is less than the first preset value, the current signal voltage is updated, and the test amplitude-frequency response curve and test harmonic of the speaker module are obtained. Wave distortion curve; and, by comparing the initial amplitude-frequency response curve and the test amplitude-frequency response curve, the average sound pressure level deviation value is obtained, and it is judged whether the average sound pressure level deviation value is less than the second preset value; When the second preset value is used, the current signal voltage before being updated is used as the protection voltage of the speaker module, and the initial amplitude-frequency response curve is used as the maximum sound pressure level curve of the speaker module; and, when it is greater than or equal to the second preset value , Determine whether the maximum distortion value in the test harmonic distortion curve is greater than or equal to the first preset value; and, when greater than or equal to the first preset value, use the updated current signal voltage as the protection voltage of the speaker module, and Use the test amplitude-frequency response curve as the maximum sound pressure level curve of the loudspeaker module; and, when it is less than the first preset value, use the test amplitude-frequency response curve as the initial amplitude-frequency response curve, and the test harmonic distortion curve as the initial harmonic Wave distortion curve, and update the current signal voltage as described above, until the protection voltage of the speaker module and the maximum sound pressure level curve of the speaker module are determined.

The method for the control processing module 402 to determine the working frequency band of the speaker module according to the amplitude-frequency response curve of the speaker module is specifically as follows: the control processing module 402 is used to select one of the most sensitive areas on the amplitude-frequency response curve of the speaker module. Octave the bandwidth, and calculate the arithmetic average of the sound pressure level corresponding to the bandwidth by taking four points in the bandwidth according to 1/3otc, and reduce the cross frequency of the amplitude-frequency response curve of the speaker module by 10dB according to the arithmetic average The frequency of the dot determines the working frequency band of the speaker module.

Among them, in the embodiment of the present application, the target debugging mode may be a single-channel mode or a multi-channel mode, specifically:

If the target debugging mode is the single-channel mode, the signal processing module 403 is used to process the first test parameter and the second test parameter according to the instructions of the target debugging mode, and the specific method for obtaining the preset of the speaker module may be: the signal processing module 403, It is used to generate a high-pass filter according to the resonance frequency of the speaker module, and determine an octave bandwidth from the effective area of the amplitude-frequency response curve of the speaker module, where the effective area is the most sensitive area on the amplitude-frequency response curve of the speaker module ; And, calculating the arithmetic mean of the sound pressure level of the bandwidth, and determining the target straight line corresponding to the arithmetic mean of the sound pressure level of the bandwidth, and obtaining the intersection frequency point of the target straight line and the amplitude-frequency response curve of the speaker module, and Generate a low-pass filter according to the intersection frequency point with the highest frequency; and generate the target amplitude-frequency response curve and target phase-frequency response curve of the speaker module according to the high-pass filter and the low-pass filter, and by fitting the amplitude-frequency response of the speaker module Curve and the target amplitude-frequency response curve of the loudspeaker module, as well as the phase-frequency response curve of the loudspeaker module and the target phase-frequency response curve of the loudspeaker module, to obtain the filter parameters of the loudspeaker module; and pack the filter parameters and the protection voltage of the loudspeaker module It is the preset of the speaker module.

If the target debugging mode is the multi-channel mode, the signal processing module 403 is used to process the first test parameter and the second test parameter according to the instructions of the target debugging mode, and the specific method for obtaining the preset of the speaker module may be: the signal processing module 403, Used to synthesize the amplitude-frequency response curve of each loudspeaker module to obtain the gain setting value of each loudspeaker module, synthesize the delay value of each loudspeaker module to obtain the delay setting value of each loudspeaker module, and synthesize the set value of each loudspeaker module The maximum sound pressure level curve and the resonance frequency determine the crossover point; and, according to the crossover point, the first high-pass filter and the first low-pass filter of each speaker module are generated, and the amplitude-frequency response curve of each speaker module The effective area determines the bandwidth of one octave, where the effective area is the most sensitive area on the amplitude-frequency response curve of the speaker module, and calculates the arithmetic average of the sound pressure level of each bandwidth; and determines the sound pressure of each bandwidth The target straight line corresponding to the arithmetic mean value of the stage, and the intersection frequency point of each target straight line and the amplitude-frequency response curve of each speaker module is obtained, and the second low-pass filter and the first low-pass filter of each speaker module are generated according to the intersection frequency point. Two high-pass filters; and, by comparing the resonance frequency of each speaker module, determine from the first high-pass filter, the first low-pass filter, the second low-pass filter, and the second high-pass filter of each speaker module The target low-pass filter and target high-pass filter of each speaker module, and the target amplitude-frequency response curve of each speaker module is generated according to the gain setting value, target high-pass filter and target low-pass filter of each speaker module, And according to the target high-pass filter and target low-pass filter of each speaker module, the target phase-frequency response curve of each speaker module is generated; and by fitting the amplitude-frequency response curve and target amplitude-frequency response curve of each speaker module , And the phase-frequency response curve and target phase-frequency response curve of each speaker module to obtain the filter parameters of each speaker module, and pack the filter parameters, protection voltage and time delay settings of each speaker module into each The preset of the speaker module.

In the embodiment of the present application, the signal processing module 403 is configured to synthesize the amplitude-frequency response curve of each speaker module to obtain the gain setting value of each speaker module specifically as follows:

The signal processing module 403 is used to take an octave bandwidth within the maximum sensitivity area on the amplitude-frequency response curve of each speaker module, and calculate the corresponding bandwidth of each bandwidth by taking four points according to 1/3otc in each bandwidth The arithmetic mean of the sound pressure level, and the frequency at the intersection of the amplitude-frequency response curve of the loudspeaker module with a 3dB drop of the arithmetic mean of the sound pressure level, determine the effective frequency band of each loudspeaker module, and calculate the effective frequency band of each loudspeaker module The average value of the sound pressure level and the magnitude relationship of the average value of the sound pressure level of the effective frequency band of the speaker module are used as the basis to determine the gain setting value of each speaker module.

The signal processing module 403 is used to synthesize the maximum sound pressure level curve and the resonance frequency of each speaker module to determine the crossover point specifically as follows:

The signal processing module 403 is used to take the resonance frequency of the speaker module with the highest frequency as the reference frequency, and obtain the crossover frequency point of the maximum sound pressure level curve of all the speaker modules, and determine whether the frequency of the crossover frequency point is greater than the reference frequency, if it is greater than , The crossover frequency is used to determine the crossover point. If it is less than or equal to, the reference frequency is used to determine the crossover point. By implementing this method, it is possible to avoid damage to the loudspeaker module due to too low operating frequency.

Through the implementation of the above speaker debugging system, the debugging efficiency and effect of the speaker are effectively improved, and the situation that the speaker module is damaged due to the too low working frequency of the speaker module can be avoided, the measurement accuracy is improved, and a better debugging effect can be achieved.

Please refer to FIG. 5. FIG. 5 is a schematic structural diagram of a speaker automatic tuning system disclosed in an embodiment of the present application. As shown in Figure 5, the speaker automatic tuning system may include:

A memory 501 storing executable program codes;

A processor 502 coupled to the memory 501;

Among them, the processor 502 calls the executable program code stored in the memory 501 to execute part or all of the steps performed in FIGS. 1 to 3.

The embodiment of the present application discloses a computer-readable storage medium that stores a computer program, where the computer program causes a computer to execute part or all of the steps performed in FIGS. 1 to 3.

A person of ordinary skill in the art can understand that all or part of the steps in the various methods of the above-mentioned embodiments can be completed by a program instructing relevant hardware. The program can be stored in a computer-readable storage medium. The storage medium includes read-only Memory (Read-Only Memory, ROM), Random Access Memory (RAM), Programmable Read-only Memory (PROM), Erasable Programmable Read Only Memory, EPROM), One-time Programmable Read-Only Memory (OTPROM), Electronically-Erasable Programmable Read-Only Memory (EEPROM), CD-ROM (Compact Disc) Read-Only Memory, CD-ROM) or other optical disk storage, magnetic disk storage, tape storage, or any other computer-readable medium that can be used to carry or store data.

The above describes in detail a speaker automatic debugging method and system disclosed in the embodiments of the present application. In this article, specific examples are used to explain the principles and implementation of the present application, and the step numbers in the specific examples above are not the same. It means the inevitable sequence of execution order, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application. The units described above as separate components may or may not be physically separate, and some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

The character "or" in this text generally means that the associated objects before and after are in an "or" relationship. In the embodiments provided in this application, it should be understood that "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B based on A does not mean that B is determined only based on A, and B can also be determined based on A and/or other information. In addition, the functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or software functional unit. If the above integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-accessible memory. Based on this understanding, the essence of the technical solution of this application, or the part that contributes to the existing technology, or all or part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a memory. , Including several requests to make a computer device (which may be a personal computer, a server or a network device, etc., specifically a processor in a computer device) execute some or all of the steps of the above methods of the various embodiments of the present application.

The description of the above embodiments is only used to help understand the method and core idea of the application; at the same time, for those of ordinary skill in the art, according to the idea of the application, there will be changes in the specific implementation and the scope of application. In summary, the content of this specification should not be construed as a limitation on this application.

Claims (12)

1. A speaker automatic debugging method, characterized in that, the method includes:

   Generating a first test signal, and sending the first test signal to the speaker module; wherein the speaker module is composed of one or more speaker units;

   Acquire the first test parameter of the speaker module, and determine the target debugging mode according to the number of the speaker module; wherein, the first test parameter includes at least the resonance frequency and amplitude-frequency response curve of the speaker module;

   Processing the first test signal according to the resonance frequency of the speaker module to obtain a second test signal, and sending the second test signal to the speaker module;

   Collecting the harmonic distortion curve of the speaker module, and determining the second test parameter of the speaker module by detecting the amplitude-frequency response curve of the speaker module and the harmonic distortion curve of the speaker module;

   According to the instruction of the target debugging mode, the first test parameter and the second test parameter are processed to obtain the preset of the speaker module.
2. The method according to claim 1, wherein the first test parameter further comprises a delay value, a phase-frequency response curve, and an impedance curve of the speaker module, and the first test parameter of the speaker module is obtained ,include:

   Obtain the first playback signal of the speaker module for the first test signal, and obtain the impulse response curve and phase-frequency response curve of the speaker module according to the first test signal and the first playback signal, and Determining the time delay value of the speaker module by the impulse response curve, and performing Fourier transform on the impulse response curve to obtain the amplitude-frequency response curve of the speaker module;

   The impedance curve of the speaker module is obtained according to the current signal and the voltage signal when the speaker module outputs the first playback signal, and the resonance frequency of the speaker module is determined according to the impedance curve of the speaker module.
3. The method according to claim 2, wherein if the second test parameter includes the protection voltage and the maximum sound pressure level curve of the speaker module, the step of detecting the amplitude-frequency response curve and the maximum sound pressure level curve of the speaker module The harmonic distortion curve of the loudspeaker module determines the second test parameter of the loudspeaker module, including:

   Determine the working frequency band of the loudspeaker module according to the amplitude-frequency response curve of the loudspeaker module, and obtain the initial amplitude-frequency response curve from the amplitude-frequency response curve of the loudspeaker module according to the working frequency band, and obtain the initial amplitude-frequency response curve from the amplitude-frequency response curve of the loudspeaker module; Obtain the initial harmonic distortion curve on the wave distortion curve;

   Judging whether the maximum distortion value in the initial harmonic distortion curve is greater than or equal to a first preset value;

   If yes, determine that the current signal voltage is the protection voltage of the speaker module, and the initial amplitude-frequency response curve is the maximum sound pressure level curve of the speaker module;

   If not, update the current signal voltage, and obtain the test amplitude-frequency response curve and the test harmonic distortion curve of the speaker module;

   By comparing the initial amplitude-frequency response curve and the test amplitude-frequency response curve, an average sound pressure level deviation value is obtained, and it is determined whether the average sound pressure level deviation value is less than a second preset value;

   If yes, use the current signal voltage before being updated as the protection voltage of the speaker module, and use the initial amplitude-frequency response curve as the maximum sound pressure level curve of the speaker module;

   If not, determine whether the maximum distortion value in the test harmonic distortion curve is greater than or equal to the first preset value;

   If yes, use the updated current signal voltage as the protection voltage of the speaker module, and use the test amplitude-frequency response curve as the maximum sound pressure level curve of the speaker module;

   If not, use the test amplitude-frequency response curve as the initial amplitude-frequency response curve, and use the test harmonic distortion curve as the initial harmonic distortion curve, and perform the update of the current signal voltage, Until the protection voltage of the speaker module and the maximum sound pressure level curve of the speaker module are determined.
4. The method according to claim 3, wherein if the target debugging mode is a single-channel mode, the first test parameter and the second test parameter are processed according to the instruction of the target debugging mode to obtain the The presets of the speaker module include:

   A high-pass filter is generated according to the resonance frequency of the speaker module, and an octave bandwidth is determined from the effective area of the amplitude-frequency response curve of the speaker module, wherein the effective area is the amplitude-frequency response of the speaker module The area with the greatest sensitivity on the curve, and calculate the arithmetic mean of the sound pressure level of the bandwidth, and determine the target straight line corresponding to the arithmetic mean of the sound pressure level, and obtain the target straight line and the amplitude of the speaker module The intersection frequency point of the frequency response curve, and generate a low-pass filter according to the intersection frequency point with the highest frequency, and generate the target amplitude-frequency response curve of the loudspeaker module according to the high-pass filter and the low-pass filter Target phase frequency response curve, and by fitting the amplitude frequency response curve of the loudspeaker module and the target amplitude frequency response curve of the loudspeaker module, and the phase frequency response curve of the loudspeaker module and the target phase frequency of the loudspeaker module Response curve, obtain the filter parameter of the speaker module, and pack the filter parameter and the protection voltage into a preset of the speaker module.
5. According to the method of claim 3, if the target debugging mode is a multi-channel mode, the first test parameter and the second test parameter are processed according to the instruction of the target debugging mode to obtain the speaker module Presets, including:

   Synthesize the amplitude-frequency response curve of each of the loudspeaker modules to obtain the gain setting value of each of the loudspeaker modules, synthesize the delay value of each of the loudspeaker modules to obtain the delay setting value of each of the loudspeaker modules, and Combining the maximum sound pressure level curve and resonance frequency of each speaker module to determine a crossover point, and generate a first high-pass filter and a first low-pass filter for each speaker module according to the crossover point, and Determine the bandwidth of one octave from the effective area of the amplitude-frequency response curve of each loudspeaker module, where the effective area is the most sensitive area on the amplitude-frequency response curve of the loudspeaker module, and calculate each The arithmetic mean of the sound pressure level of the bandwidth; and determining the target straight line corresponding to the arithmetic mean of the sound pressure level of each of the bandwidths, and obtaining the amplitude-frequency response of each of the target straight lines and each of the speaker modules The intersection frequency point of the curve, and the second low-pass filter and the second high-pass filter of each speaker module are generated according to the intersection frequency point,

   And, by comparing the resonance frequency of each of the speaker modules, each of the first high-pass filter, the first low-pass filter, the second low-pass filter, and the second high-pass filter of each of the speaker modules is determined. A target low-pass filter and a target high-pass filter of the speaker module, and the target of each speaker module is generated according to the gain setting value, target high-pass filter, and target low-pass filter of each speaker module Amplitude-frequency response curve, and generating the target phase-frequency response curve of each speaker module according to the target high-pass filter and target low-pass filter of each speaker module; and, by fitting each speaker module The amplitude-frequency response curve and the target amplitude-frequency response curve, as well as the phase-frequency response curve and the target phase-frequency response curve of each speaker module, obtain the filter parameters of each speaker module, and divide each speaker module The filter parameters, protection voltage, and time delay setting values of the module are packaged into the presets of each speaker module.
6. A loudspeaker automatic debugging system, characterized in that the system includes:

   The measurement signal module is used to generate a first test signal and send the first test signal to the speaker module; wherein, the speaker module is composed of one or more speaker units;

   The control processing module is configured to obtain the first test parameter of the speaker module, and determine the target debugging mode according to the number of the speaker module; wherein, the first test parameter includes at least the resonance frequency and amplitude frequency of the speaker module Response curve

   The measurement signal module is further configured to process the first test signal according to the resonance frequency of the speaker module to obtain a second test signal, and send the second test signal to the speaker module;

   The control processing module is also used to collect the harmonic distortion curve of the speaker module, and determine the second harmonic distortion curve of the speaker module by detecting the amplitude-frequency response curve of the speaker module and the harmonic distortion curve of the speaker module. Test parameters;

   The signal processing module is further configured to process the first test parameter and the second test parameter according to the instruction of the target debugging mode to obtain the preset of the speaker module.
7. The system according to claim 6, wherein the first test parameter further comprises a delay value, a phase-frequency response curve, and an impedance curve of the speaker module, and the control processing module is used to obtain the speaker module The specific method of the first test parameter is:

   The control processing module is configured to obtain a first playback signal of the speaker module for the first test signal, and obtain an impulse response curve of the speaker module according to the first test signal and the first playback signal And the phase-frequency response curve, and determine the time delay value of the speaker module according to the impulse response curve, and perform Fourier transform on the impulse response curve to obtain the amplitude-frequency response curve of the speaker module; The loudspeaker module outputs the current signal and the voltage signal when the first playing signal is output to obtain the impedance curve of the loudspeaker module, and the resonance frequency of the loudspeaker module is determined according to the impedance curve of the loudspeaker module.
8. The system according to claim 7, wherein if the second test parameter includes the protection voltage and the maximum sound pressure level curve of the speaker module, the control processing module is used to detect the amplitude of the speaker module The method for determining the second test parameter of the speaker module by the frequency response curve and the harmonic distortion curve of the speaker module is specifically as follows:

   The control processing module is configured to determine the working frequency band of the speaker module according to the amplitude-frequency response curve of the speaker module, and obtain an initial amplitude-frequency response curve from the amplitude-frequency response curve of the speaker module according to the working frequency band, And obtain the initial harmonic distortion curve from the harmonic distortion curve of the loudspeaker module; determine whether the maximum distortion value in the initial harmonic distortion curve is greater than or equal to the first preset value; and, if the maximum distortion value in the initial harmonic distortion curve is greater than or equal to the At the first preset value, it is determined that the current signal voltage is the protection voltage of the speaker module, and the initial amplitude-frequency response curve is the maximum sound pressure level curve of the speaker module; and, when it is less than the first preset value When the current signal voltage is updated, the test amplitude-frequency response curve and the test harmonic distortion curve of the speaker module are obtained; and, by comparing the initial amplitude-frequency response curve and the test amplitude-frequency response curve, it is obtained Average sound pressure level deviation value, and determine whether the average sound pressure level deviation value is less than a second preset value; and, when the average sound pressure level deviation value is less than the second preset value, use the current signal voltage before being updated as the all The protection voltage of the loudspeaker module, and the initial amplitude-frequency response curve as the maximum sound pressure level curve of the loudspeaker module; and, when it is greater than or equal to the second preset value, judging the test harmonic distortion Whether the maximum distortion value in the curve is greater than or equal to the first preset value; and, when greater than or equal to the first preset value, use the updated current signal voltage as the protection voltage of the speaker module , And use the test amplitude-frequency response curve as the maximum sound pressure level curve of the loudspeaker module; and, when it is less than the first preset value, use the test amplitude-frequency response curve as the initial amplitude-frequency response Curve, and use the test harmonic distortion curve as the initial harmonic distortion curve, and perform the update of the current signal voltage until the protection voltage of the speaker module and the maximum sound of the speaker module are determined Pressure grade curve.
9. The system according to claim 8, wherein if the target debugging mode is a single-channel mode, the signal processing module is configured to process the first test parameter and the second test parameter according to the instruction of the target debugging mode. The specific method for testing the parameters to obtain the preset of the speaker module is as follows:

   The signal processing module is configured to generate a high-pass filter according to the resonance frequency of the speaker module, and determine a bandwidth of one octave from the effective area of the amplitude-frequency response curve of the speaker module, wherein the effective area is The most sensitive area on the amplitude-frequency response curve of the loudspeaker module, and calculating the arithmetic mean of the sound pressure level of the bandwidth, and determining the target straight line corresponding to the arithmetic mean of the sound pressure level, and obtaining the target The intersection frequency point of the straight line and the amplitude-frequency response curve of the speaker module, and the low-pass filter is generated according to the intersection frequency point with the highest frequency, and the speaker is generated according to the high-pass filter and the low-pass filter The target amplitude-frequency response curve and target phase-frequency response curve of the module, and by fitting the amplitude-frequency response curve of the loudspeaker module and the target amplitude-frequency response curve of the loudspeaker module, and the phase-frequency response curve of the loudspeaker module and The target phase-frequency response curve of the loudspeaker module is used to obtain the filter parameters of the loudspeaker module, and the filter parameters and the protection voltage are packaged as a preset of the loudspeaker module.
10. The system according to claim 8, wherein if the target debugging mode is a multi-channel mode, the signal processing module is configured to process the first test parameter and the second test parameter according to the instruction of the target debugging mode. The specific method for testing the parameters to obtain the preset of the speaker module is as follows:

    The signal processing module is configured to synthesize the amplitude-frequency response curve of each of the loudspeaker modules to obtain the gain setting value of each of the loudspeaker modules, and synthesize the delay value of each of the loudspeaker modules to obtain each of the loudspeakers The time delay setting value of the module, and the maximum sound pressure level curve and resonance frequency of each speaker module are combined to determine the crossover point, and the first high-pass filter and the first high-pass filter of each speaker module are generated according to the crossover point. A first low-pass filter, and a bandwidth of one octave is determined from the effective area of the amplitude-frequency response curve of each speaker module, wherein the effective area is the maximum sensitivity on the amplitude-frequency response curve of the speaker module And calculate the arithmetic mean value of the sound pressure level of each said bandwidth; and determine the target line corresponding to the arithmetic mean value of the sound pressure level of each said bandwidth, and obtain each target line and each target line The intersection frequency point of the amplitude-frequency response curve of the speaker module, and the second low-pass filter and the second high-pass filter of each speaker module are generated according to the intersection frequency point, and by comparing each of the speaker modules Determine the target low-pass filter of each speaker module from the first high-pass filter, first low-pass filter, second low-pass filter, and second high-pass filter of each speaker module Generator and target high-pass filter, and generate the target amplitude-frequency response curve of each speaker module according to the gain setting value, target high-pass filter, and target low-pass filter of each speaker module, and generate the target amplitude-frequency response curve of each speaker module according to each speaker module. The target high-pass filter and target low-pass filter of the speaker module generate a target phase-frequency response curve of each speaker module; and, by fitting the amplitude-frequency response curve and target amplitude-frequency response of each speaker module Curve, and the phase-frequency response curve and target phase-frequency response curve of each speaker module to obtain the filter parameter of each speaker module, and combine the filter parameters and protection voltage of each speaker module in time The delay setting value is packaged as a preset of each speaker module.
11. A loudspeaker automatic debugging system, which is characterized in that it comprises:

    A memory storing executable program codes;

    A processor coupled with the memory;

    The processor calls the executable program code stored in the memory to execute the method according to any one of claims 1 to 5.
12. A computer-readable storage medium, characterized in that it stores a computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 to 5.

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