Vehicle-mounted sound effect adjustment method, terminal device and storage medium

Abstract

The application discloses a vehicle sound effect adjustment method, a terminal device and a storage medium. The adjustment method comprises the following steps: obtaining a standard audio signal; wherein the standard audio signal is obtained by a vehicle microphone on a standard vehicle collecting standard audio played by a vehicle loudspeaker on the standard vehicle; the standard audio is obtained by adjusting reference audio by using a vehicle sound effect algorithm on the standard vehicle; receiving a target audio signal collected by a vehicle microphone on a target vehicle; target audio corresponding to the target audio signal is played by a vehicle loudspeaker on the target vehicle; the target audio is obtained by adjusting the reference audio by using a vehicle sound effect algorithm on the target vehicle; and in response to the target audio signal being outside a preset range, adjusting the vehicle sound effect algorithm on the target vehicle based on a difference between the target audio signal and the standard audio signal. The above scheme makes the target audio finally output by the target vehicle similar to the standard audio output by the standard vehicle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle audio, in particular to a vehicle sound effect adjustment method, a terminal device and a storage medium. BACKGROUND

[0002] With more and more cars entering ordinary families, the use of cars becomes more and more frequent, and cars become more intelligent and humanized. The sound effect of the vehicle loudspeaker as a necessary entertainment device of the car directly affects the driving experience.

[0003] The sound effect of the vehicle loudspeaker is often determined by the vehicle sound effect algorithm, and is affected by the production process and installation of the loudspeaker. For the same vehicle sound effect algorithm, different sound effects may be obtained on different vehicles. Therefore, during the whole vehicle detection stage, manual sound effect testing is often required, and subjective testing may lead to testing result deviation. In addition, if the sound effect does not meet the conditions, a large amount of time is required for re-adjustment and testing. SUMMARY

[0004] The present application provides a vehicle sound effect adjustment method, a terminal device and a storage medium.

[0005] One of the technical solutions adopted by the present application is to provide a vehicle sound effect adjustment method, which comprises the following steps:

[0006] obtaining a standard audio signal; wherein the standard audio signal is obtained by a vehicle microphone on a standard vehicle collecting a standard audio played by a vehicle loudspeaker on the standard vehicle; the standard audio is obtained by adjusting a reference audio by using a vehicle sound effect algorithm on the standard vehicle;

[0007] receiving a target audio signal collected by a vehicle microphone on a target vehicle; the target audio corresponding to the target audio signal is played by a vehicle loudspeaker on the target vehicle, and the target audio is obtained by adjusting the reference audio by using a vehicle sound effect algorithm on the target vehicle;

[0008] in response to the target audio signal being outside a preset range, adjusting the vehicle sound effect algorithm on the target vehicle based on the difference between the target audio signal and the standard audio signal.

[0009] Optionally, the target audio signal comprises a target direct sound signal, and the standard audio signal comprises a standard direct sound signal.

[0010] in response to the target audio signal being outside a preset range, adjusting the vehicle sound effect algorithm on the target vehicle based on the difference between the target audio signal and the standard audio signal, comprising:

[0011] In response to the target direct sound signal being out of the preset range, adjusting a parameter corresponding to the direct sound in the vehicle sound effect algorithm based on a difference between the target direct sound signal and the standard direct sound signal.

[0012] Optionally, the target audio signal collected by the vehicle microphone on the target vehicle is received, including:

[0013] A first number of first sampling points are determined.

[0014] A first sampling signal corresponding to the target direct sound at each first sampling point is obtained.

[0015] The target direct sound signal is determined based on each first sampling signal.

[0016] Optionally, the target audio signal includes a target ambient sound signal, and the standard audio signal includes a standard ambient sound signal.

[0017] In response to the target audio signal being out of the preset range, adjusting a parameter corresponding to the ambient sound in the vehicle sound effect algorithm based on a difference between the target audio signal and the standard audio signal, including:

[0018] In response to the target ambient sound signal being out of the preset range, adjusting a parameter corresponding to the ambient sound in the vehicle sound effect algorithm based on a difference between the target ambient sound signal and the standard ambient sound signal.

[0019] Optionally, the target audio signal collected by the vehicle microphone on the target vehicle is received, including:

[0020] A second number of second sampling points are determined.

[0021] A second sampling signal corresponding to the standard ambient sound at each second sampling point is obtained.

[0022] The target ambient sound signal is determined based on each second sampling signal.

[0023] Optionally, the target audio signal includes a target bass signal, and the standard audio signal includes a standard bass signal.

[0024] In response to the target audio signal being out of the preset range, adjusting a parameter corresponding to the bass in the vehicle sound effect algorithm based on a difference between the target audio signal and the standard audio signal, including:

[0025] In response to the target bass signal being out of the preset range, adjusting a parameter corresponding to the bass in the vehicle sound effect algorithm based on a difference between the target bass signal and the standard bass signal.

[0026] Optionally, the target audio signal collected by the vehicle microphone on the target vehicle is received, including:

[0027] determine a third quantity of third sampling points;

[0028] acquire a third sampling signal corresponding to each third sampling point of the target bass;

[0029] determine the target bass signal based on all the third sampling signals.

[0030] Optionally, the vehicle-mounted speakers are multiple and arranged in different areas of the vehicle.

[0031] Another technical solution adopted by the present application is to provide a terminal device, which comprises a memory and a processor connected with the memory;

[0032] The memory is used to store program data, and the processor is used to execute the program data to realize the vehicle-mounted sound effect adjustment method as described above.

[0033] Another technical solution adopted by the present application is to provide a computer storage medium, which is used to store program data, and the program data, when executed by a computer, is used to realize the vehicle-mounted sound effect adjustment method as described above.

[0034] The present application has the following beneficial effects: the vehicle-mounted microphone of a standard vehicle is used to collect the standard audio played by the vehicle-mounted speaker on the standard vehicle to acquire a standard audio signal; the vehicle-mounted microphone of a target vehicle is used to collect the standard audio played by the vehicle-mounted speaker on the target vehicle to acquire a target audio signal; in response to the target audio signal being outside a preset range determined based on the standard audio signal, the vehicle-mounted sound effect algorithm on the target vehicle is adjusted based on the difference between the target audio signal and the standard audio signal, compared with the existing technology which adopts an artificial way to detect whether the vehicle-mounted sound effect meets the requirements, the result deviation caused by human subjectivity is reduced, the accuracy of the vehicle-mounted sound effect adjustment is improved, and in addition, the vehicle-mounted sound effect adjustment method provided by the present application automatically adjusts the vehicle-mounted sound effect algorithm of the target vehicle, so that the target audio finally output by the target vehicle is similar to the standard audio output by the standard vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0036] Figure 1 is a schematic diagram of an embodiment of a vehicle-mounted sound effect function architecture;

[0037] Figure 2is a flowchart of an embodiment of the method for adjusting the sound effect of the vehicle sound system provided in the present application;

[0038] Figure 3 is a schematic diagram of the distribution of the vehicle speaker in the vehicle;

[0039] Figure 4 is a flowchart of another embodiment of the method for adjusting the sound effect of the vehicle sound system provided in the present application;

[0040] Figure 5 is a schematic diagram of an embodiment of the terminal device provided in the present application;

[0041] Figure 6 is a schematic diagram of an embodiment of the computer storage medium provided in the present application. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described clearly and completely below 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 of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without any creative work fall within the scope of protection of the present application.

[0043] The terms “first”, “second”, and the like in the present application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms “include” and “have” and any variations thereof are intended to cover the inclusions without exclusivity. For example, a process, method, system, or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed or can optionally include other steps or units inherent to the process, method, or device.

[0044] In addition, although the terms “first”, “second”, and the like are used repeatedly in the present application to describe various data (or various applications or various instructions or various operations), etc., these data (or applications or instructions or operations) should not be limited by these terms. These terms are only used to distinguish one data (or application or instruction or operation) from another data (or application or instruction or operation).

[0045] As shown in Figure 1 Figure 1 ​FIG. 1 is a schematic diagram of an embodiment of a vehicle audio function architecture. In this embodiment, the vehicle uses QAM8295 as a master SOC (master chip), runs a QNX system as a foundation in the SOC, and processes hardware drivers, runs a virtual machine in the QNX system, and boots an Android system in the virtual machine. When a music APP running in the Android system plays music, the audio data is decoded into a two-channel pcm (Pulse Code Modulation) data stream, and the pcm data is transmitted across the system to the QNX system after passing through the framework layer, the Hal (Hardware Abstraction) layer, and the TinyALSA driver of the Android.

[0046] The QNX system uses a Qualcomm framework to transmit the pcm data to an ADSP (Adaptive Digital Signal Processing System). The ADSP module is externally connected to an AKM7709 audio DSP chip. The vehicle audio algorithm runs in the AKM7709, and after the low-frequency enhancement algorithm and the reverberation algorithm run in the HIFI core of the AKM, the data is transmitted to the AK core of the AKM7709, and after active frequency division, gain, delay, and equalizer processing are completed, the analog signal is input to the AMP power amplifier, and then input to the vehicle loudspeaker. The data collected by the vehicle microphone is input to the ADSP through different TDM signals.

[0047] In related technologies, a vehicle microphone is mainly used to detect whether a vehicle loudspeaker is available, to realize automatic detection of the vehicle loudspeaker. Compared with manually detecting the vehicle loudspeaker, this method is less likely to produce result deviations caused by human subjectivity. Further, this method can also be used to detect whether the audio output by the vehicle loudspeaker meets the requirements. The present inventors have found that this method lacks determination of key content in the vehicle audio algorithm of different vehicles. In addition, when the audio output by the vehicle loudspeaker does not meet the requirements, this method still needs manual determination of whether the power amplifier and the host signal are normal, and relevant personnel need to spend a lot of time to repeatedly test and confirm. However, this method does not consider that the vehicle audio can be automatically adjusted by adjusting the vehicle audio algorithm.

[0048] The present application mainly designs a method for automatically adjusting vehicle audio. Unlike the traditional method, the present application obtains a standard audio signal corresponding to a standard vehicle and a target audio signal corresponding to a target vehicle. When the target audio signal is outside a preset range determined based on the standard audio signal, the vehicle audio algorithm of the target vehicle is adjusted based on the difference between the target audio signal and the standard audio signal. In this way, the standard audio played by the standard vehicle and the target audio played by the target vehicle are approximately consistent.

[0049] For details, please refer to Figure 2 , Figure 2is a flowchart of an embodiment of the vehicle sound effect adjustment method provided in the present application.

[0050] As shown in Figure 1 The data transmission method provided in the present application can specifically include the following steps:

[0051] S1, obtaining a standard audio signal.

[0052] The standard audio signal is obtained by a vehicle microphone on a standard vehicle collecting standard audio played by a vehicle loudspeaker on the standard vehicle, and the standard audio is obtained by adjusting a reference audio by using a vehicle sound effect algorithm on the standard vehicle.

[0053] The vehicle sound effect adjustment method provided in the present application is mainly executed by a sound effect adjustment device. In some embodiments, the sound effect adjustment device can be the vehicle microphone itself. In some embodiments, the point cloud target processing device can be a device in communication connection with the vehicle microphone. For example, the device can be any one or more of a device for monitoring images, a user equipment (UE), a mobile device, a user terminal, a terminal, a cellular phone, a cordless phone, a personal digital assistant (PDA), a handheld device, a computing device, a vehicle device, a wearable device, a smart connected vehicle, an autonomous vehicle, a robot, a security system, glasses for augmented reality or virtual reality, a helmet, etc. In some possible implementations, the vehicle sound effect adjustment method can be realized by a processor calling computer readable instructions stored in a memory.

[0054] It can be understood that the standard vehicle is provided with a vehicle microphone and a vehicle loudspeaker.

[0055] In some embodiments, the sound effect adjustment device sends a reference audio and a sound effect test instruction to the standard vehicle, the standard vehicle adjusts the reference audio by using a vehicle sound effect algorithm to obtain a standard audio, and then plays the standard audio through the vehicle loudspeaker. Further, the vehicle microphone collects the standard audio to obtain a standard audio signal.

[0056] In some possible embodiments, the sound effect adjustment device extracts first feature information in the standard audio signal to obtain a standard audio feature. Exemplarily, the first feature information can include any one or more combinations of common sound features such as amplitude spectrum, phase spectrum, MFCC coefficient, LPC coefficient, time domain feature, frequency domain feature, etc., which are not limited herein.

[0057] In some possible embodiments, the sound effect adjustment device extracts an amplitude value in the standard audio signal to obtain a standard audio amplitude value.

[0058] S2, receiving a target audio signal collected by a vehicle microphone on the target vehicle.

[0059] The target audio signal corresponds to a target audio played by a vehicle speaker on the target vehicle, and the target audio is obtained by adjusting the reference audio by using a vehicle sound effect algorithm on the target vehicle.

[0060] It should be noted that the target vehicle and the standard vehicle belong to the same vehicle model, i.e., the first relative position of the vehicle speaker in the target vehicle is the same as the second relative position of the vehicle speaker in the standard vehicle. In addition, the third relative position of the vehicle microphone in the target vehicle is the same as the fourth relative position of the vehicle speaker in the standard vehicle.

[0061] In addition, considering that the vehicle speaker of the target vehicle and the vehicle speaker of the standard vehicle belong to the same type, but may be different in model or batch. The vehicle speakers of different batches play the same target audio, which may meet the design requirements on a certain target vehicle, but may not meet the design requirements on another target vehicle. Based on this, the vehicle sound effect algorithm needs to be adjusted accordingly to make the sound effect corresponding to the target audio played by the target vehicle consistent with the sound effect corresponding to the target audio played by the standard vehicle.

[0062] In some possible embodiments, S2 further includes testing the vehicle speaker of the target vehicle, for example, testing whether the vehicle speaker is available.

[0063] In some embodiments, the sound effect adjusting device sends the same reference audio and sound effect test instruction to the target vehicle, and the target vehicle adjusts the target audio by using the vehicle sound effect algorithm, obtains the target audio, and then plays the target audio through the vehicle speaker. Further, the vehicle microphone collects the target audio to obtain the target audio signal.

[0064] In some possible embodiments, the sound effect adjusting device extracts second feature information in the target audio signal to obtain target audio features. For example, the second feature information can include any one or a combination of multiple common sound features such as amplitude spectrum, phase spectrum, MFCC coefficient, LPC coefficient, time domain feature, and frequency domain feature, which are not limited herein.

[0065] In some possible embodiments, the sound effect adjusting device extracts the amplitude of the target audio signal to obtain the target audio amplitude.

[0066] S3, in response to the target audio signal being outside the preset range, adjusting the vehicle sound effect algorithm on the target vehicle based on the difference between the target audio signal and the standard audio signal.

[0067] In some possible embodiments, the preset range is determined based on the reference audio signal.

[0068] In some embodiments, the sound effect adjusting device determines whether the target audio feature is greater than or less than a preset range, wherein the preset range is determined based on the standard audio feature. If yes, the sound effect adjusting device adjusts the in-vehicle sound effect algorithm on the target vehicle based on the difference between the target audio signal and the standard audio signal.

[0069] In some embodiments, the sound effect adjusting device determines whether the target audio amplitude is greater than or less than a preset range, wherein the preset range is determined based on the standard audio feature. If yes, the sound effect adjusting device adjusts the in-vehicle sound effect algorithm on the target vehicle based on the difference between the target audio signal and the standard audio signal.

[0070] The above scheme uses the in-vehicle microphone of the standard vehicle to collect the standard audio played by the in-vehicle loudspeaker of the standard vehicle to obtain a standard audio signal; uses the in-vehicle microphone of the target vehicle to collect the standard audio played by the in-vehicle loudspeaker of the target vehicle to obtain a target audio signal; and in response to the target audio signal being outside a preset range determined based on the standard audio signal, adjusts the in-vehicle sound effect algorithm on the target vehicle based on the difference between the target audio signal and the standard audio signal. Compared with the prior art of detecting whether the in-vehicle sound effect meets the requirements in an artificial manner, the above scheme reduces the result deviation caused by human subjectivity and improves the accuracy of in-vehicle sound effect adjustment. In addition, the in-vehicle sound effect adjustment method provided by the present application automatically adjusts the in-vehicle sound effect algorithm of the target vehicle, so that the target audio finally output by the target vehicle is similar to the standard audio output by the standard vehicle.

[0071] Another embodiment of the in-vehicle sound effect adjustment method provided by the present application can specifically include the following steps:

[0072] S11, obtaining a standard audio signal.

[0073] The standard audio signal is obtained by a in-vehicle microphone of a standard vehicle collecting standard audio played by an in-vehicle loudspeaker of the standard vehicle, and the standard audio is obtained by adjusting a reference audio by using an in-vehicle sound effect algorithm of the standard vehicle. The standard audio signal includes a standard direct sound signal.

[0074] Specifically, the in-vehicle sound effect algorithm of the standard vehicle performs a direct sound extraction operation on the reference audio to obtain a standard direct sound. Further, the sound effect adjusting device collects the standard direct sound by using the in-vehicle microphone of the standard vehicle to obtain a standard direct sound signal.

[0075] Exemplarily, the direct sound includes human voice.

[0076] In some embodiments, the in-vehicle loudspeaker is multiple and is arranged in different areas of the vehicle.

[0077] Referring to Figure 3 The vehicle-mounted loudspeakers playing the standard direct sound include at least two of the center full-range loudspeaker, the center tweeter, the left front door mid-range and tweeter, the right front door mid-range and tweeter, the left rear door tweeter, the left rear door mid-range loudspeaker, the right rear door tweeter, and the right rear door mid-range loudspeaker. It should be noted that the number and / or the positions of the vehicle-mounted loudspeakers can be different for different vehicle models.

[0078] In some possible embodiments, when collecting the standard direct sound signal of a vehicle-mounted loudspeaker, the vehicle-mounted microphone can receive the standard direct sound played by other vehicle-mounted loudspeakers if all the vehicle-mounted loudspeakers play the standard direct sound at the same time. In order to reduce the interference, the sound effect adjustment apparatus controls the vehicle-mounted loudspeakers on the standard vehicle to play the standard direct sound in turn to obtain the standard direct sound signals corresponding to different vehicle-mounted loudspeakers.

[0079] In some possible embodiments, the sound effect adjustment apparatus obtains the direct sound signal of the standard direct sound at a single specific frequency as the standard direct sound signal. In some possible embodiments, the sound effect adjustment apparatus obtains the direct sound signals of the standard direct sound at at least two different frequencies to determine the standard direct sound signal.

[0080] In some possible embodiments, S11 can include the following steps:

[0081] S111, determining a first quantity of first sampling points.

[0082] In some embodiments, the sound effect adjustment apparatus determines at least two first sampling points at different frequencies.

[0083] In some possible application scenarios, the sound effect adjustment apparatus selects the sampling points of 1 / 3 octave to determine the first sampling points at different frequencies. Alternatively, the number of the first sampling points can be 9, 16, 25, or greater than 25, which is not limited herein.

[0084] For example, the sound effect adjustment apparatus selects the first sampling points with frequencies of [160, 200, 250, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000, 2500, 3150, 4000, 5000], i.e., the first quantity is 16.

[0085] S112, obtaining a first standard sampling signal corresponding to the standard direct sound at each first sampling point.

[0086] In some embodiments, the sound effect adjustment apparatus obtains the first standard sampling signals of the standard direct sound at the first sampling points corresponding to different frequencies.

[0087] Exemplarily, the sound effect adjusting apparatus acquires a standard sampling signal corresponding to a standard direct sound at a first sampling point with a frequency of [160, 200, 250, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000, 2500, 3150, 4000, 5000], and acquires any one or more of an amplitude, a mean value, and a variance corresponding to each standard sampling signal as a first standard sampling signal.

[0088] S123, based on each first standard sampling signal, determining a standard direct sound signal.

[0089] In some embodiments, the number of first standard sampling signals is one, and the sound effect adjusting apparatus takes the first standard sampling signal as the standard direct sound signal.

[0090] In some embodiments, the number of first standard sampling signals is multiple, and the sound effect adjusting apparatus calculates any one of a mean, a median, a mode, a mean square error, and a variance corresponding to the first standard sampling signals to obtain the standard direct sound signal.

[0091] S12, receiving a target audio signal collected by a vehicle microphone on a target vehicle.

[0092] The target audio corresponding to the target audio signal is played through a vehicle loudspeaker on the target vehicle, and the target audio is obtained by adjusting a reference audio using a vehicle sound effect algorithm on the target vehicle.

[0093] It can be understood that the type, installation position, and number of the vehicle loudspeaker of the target vehicle are the same as those of the standard vehicle.

[0094] The target audio signal includes a target direct sound signal.

[0095] In some possible embodiments, when collecting the target audio signal of a certain vehicle loudspeaker, the vehicle microphone can receive the target direct sound played by other vehicle loudspeakers. The sound effect adjusting apparatus controls the vehicle loudspeakers on the target vehicle to play the target direct sound in sequence to obtain the target direct sound signals corresponding to different vehicle loudspeakers.

[0096] In some possible embodiments, the sound effect adjusting apparatus acquires a direct sound signal of the target direct sound at a single specific frequency as the target direct sound signal. In some possible embodiments, the sound effect adjusting apparatus acquires audio signals corresponding to the target direct sound at at least two different frequencies to determine the target direct sound signal.

[0097] In some possible application scenarios, S12 can specifically include the following steps:

[0098] S121, determine a first quantity of first sampling points.

[0099] S122, obtain a first sampling signal corresponding to the target direct sound at each of the first sampling points.

[0100] Specifically, the sound effect adjustment apparatus obtains the first sampling signal corresponding to the target direct sound at a certain specific frequency or different specified frequencies.

[0101] For example, the sound effect adjustment apparatus obtains the sampling signal corresponding to the target direct sound at a frequency of [160, 200, 250, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000, 2500, 3150, 4000, 5000] first sampling points, and obtains any one or more of the amplitude, average value, and variance of each sampling signal as the first sampling signal.

[0102] S123, determine the target direct sound signal based on each of the first sampling signals.

[0103] In some embodiments, the number of first sampling signals is one, and the sound effect adjustment apparatus takes the first sampling signal as the target direct sound signal.

[0104] In some embodiments, the number of first sampling signals is multiple, and the sound effect adjustment apparatus calculates any one of the mean, median, mode, mean square deviation, and variance of the first sampling signals to obtain the target direct sound signal.

[0105] S13, in response to the target direct sound signal being outside a preset range, adjusting a parameter corresponding to the direct sound in the vehicle-mounted sound effect algorithm based on the difference between the target direct sound signal and the standard direct sound signal.

[0106] The preset range is determined based on the standard direct sound signal.

[0107] It should be noted that the preset ranges corresponding to the vehicle-mounted speakers arranged at different positions may not be exactly the same.

[0108] For example, the preset range is determined based on the amplitude of the standard direct sound signal, and satisfies the following relationship:

[0109] In-car speaker channel Standard direct sound signal amplitude Range maximum Range minimum Center channel 80％ 90％ 80％ Front left door channel 60％ 70％ 55％ Front right door channel 60％ 70％ 55％ Rear left door channel 60％ 70％ 55％ Rear right door channel 60％ 70％ 55％

[0110] The vehicle-mounted loudspeaker of the middle channel corresponds to at least one of a middle full-frequency loudspeaker and a middle high-frequency loudspeaker; the vehicle-mounted loudspeaker of the left front door channel corresponds to a left front door mid-range and high-frequency loudspeaker; the vehicle-mounted loudspeaker of the right front door channel corresponds to a right front door mid-range and high-frequency loudspeaker; the vehicle-mounted loudspeaker of the left rear door channel corresponds to a left rear door high-frequency loudspeaker and a left rear door mid-range loudspeaker; and the vehicle-mounted loudspeaker of the right rear door channel corresponds to a right rear door high-frequency loudspeaker and a right rear door mid-range loudspeaker.

[0111] In some embodiments, in response to the amplitude of the target direct sound signal of a certain channel being greater than a preset range, the parameter corresponding to the direct sound in the vehicle-mounted sound effect algorithm is reduced based on the difference between the target direct sound signal and the standard direct sound signal until the amplitude of the target direct sound signal of the channel is within the preset range.

[0112] In some embodiments, in response to the amplitude of the target direct sound signal of a certain channel being less than a preset range, the parameter corresponding to the direct sound in the vehicle-mounted sound effect algorithm is increased based on the difference between the target direct sound signal and the standard direct sound signal until the amplitude of the target direct sound signal of the channel is within the preset range.

[0113] The above scheme uses the vehicle-mounted microphone of a standard vehicle to collect standard audio played by the vehicle-mounted loudspeaker of the standard vehicle to obtain a standard audio signal; uses the vehicle-mounted microphone of a target vehicle to collect standard audio played by the vehicle-mounted loudspeaker of the target vehicle to obtain a target audio signal; and in response to the target audio signal being outside a preset range determined based on the standard audio signal, adjusts the vehicle-mounted sound effect algorithm of the target vehicle based on the difference between the target audio signal and the standard audio signal. Compared with the prior art which detects whether the vehicle-mounted sound effect meets the requirements in an artificial manner, the above scheme reduces the result deviation caused by human subjectivity and improves the accuracy of the vehicle-mounted sound effect adjustment. In addition, the vehicle-mounted sound effect adjustment method provided by the present application automatically adjusts the vehicle-mounted sound effect algorithm of the target vehicle, so that the target audio finally output by the target vehicle is similar to the standard audio output by the standard vehicle.

[0114] The vehicle-mounted sound effect adjustment method provided by the present application can specifically include the following steps:

[0115] S21, obtaining a standard audio signal.

[0116] The standard audio signal is obtained by a vehicle-mounted microphone of a standard vehicle collecting standard audio played by a vehicle-mounted loudspeaker of the standard vehicle, and the standard audio is obtained by adjusting reference audio by using a vehicle-mounted sound effect algorithm of the standard vehicle. The standard audio signal includes a standard ambient sound signal.

[0117] Specifically, the in-vehicle sound effect algorithm of the standard vehicle extracts the standard audio to obtain the standard ambient sound. Further, the sound effect adjusting device collects the standard ambient sound through the in-vehicle microphone on the standard vehicle to obtain the standard ambient sound signal.

[0118] Exemplarily, the ambient sound includes a backing track and / or applause that enhances the atmosphere.

[0119] In some embodiments, the in-vehicle speakers are multiple and are arranged in different areas of the vehicle.

[0120] Referring to Figure 3 The in-vehicle speakers playing the standard ambient sound include at least two of the first D-pillar surround speaker, the second D-pillar surround speaker, the left front door midrange and tweeter speaker, the right front door midrange and tweeter speaker, the left rear door tweeter speaker, the left rear door midrange speaker, the right rear door tweeter speaker, and the right rear door midrange speaker. It should be noted that the number and / or positions of the in-vehicle speakers may be different for different vehicle models.

[0121] In some possible embodiments, when collecting the standard ambient sound signal of a certain in-vehicle speaker, the in-vehicle microphone may receive the standard ambient sound played by other in-vehicle speakers if all in-vehicle speakers play the standard ambient sound at the same time. In order to reduce interference, the sound effect adjusting device controls the in-vehicle speakers on the standard vehicle to play the standard ambient sound in sequence to obtain the standard ambient sound signals corresponding to different in-vehicle speakers.

[0122] In some possible embodiments, the sound effect adjusting device obtains the audio signal of the standard direct sound at a single specific frequency as the standard ambient sound signal. In some possible embodiments, the sound effect adjusting device obtains the audio signals of the standard ambient sound corresponding to at least two different frequencies to determine the standard ambient sound signal.

[0123] In some application scenarios, S21 can specifically include the following steps:

[0124] S211, determining a second number of second sampling points.

[0125] In some embodiments, the sound effect adjusting device determines at least two second sampling points at different frequencies.

[0126] In some possible application scenarios, the sound effect adjusting device selects sampling points of 1 / 3 octave to determine the second sampling points at different frequencies. Optionally, the number of second sampling points can be 9, 16, 25, or greater than 25, which is not limited herein. In some possible embodiments, the second number is equal to the first number. In some possible embodiments, the second sampling points are the first sampling points.

[0127] Exemplarily, the sound effect adjusting apparatus selects the second sampling points with the frequencies of [160, 200, 250, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000, 2500, 3150, 4000, 5000], i.e., the second quantity is 16.

[0128] S212, obtaining a second standard sampling signal corresponding to the standard ambient sound at each second sampling point.

[0129] In some embodiments, the sound effect adjusting apparatus obtains the second standard sampling signals corresponding to the standard ambient sound at different frequencies.

[0130] Exemplarily, the sound effect adjusting apparatus obtains the standard sampling signals corresponding to the standard ambient sound at the frequencies of [160, 200, 250, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000, 2500, 3150, 4000, 5000], and obtains any one or more of the amplitude, the average value, and the variance of each standard sampling signal as the second standard sampling signal.

[0131] S213, determining the standard ambient sound signal based on each second standard sampling signal.

[0132] In some embodiments, the quantity of the second standard sampling signals is one, and the sound effect adjusting apparatus takes the second standard sampling signal as the standard ambient sound signal.

[0133] In some embodiments, the quantity of the second standard sampling signals is multiple, and the sound effect adjusting apparatus calculates any one of the average, the median, the mode, the mean square deviation, and the variance of all the second standard sampling signals to obtain the standard ambient sound signal.

[0134] S22, receiving a target audio signal collected by a vehicle-mounted microphone on a target vehicle.

[0135] The target audio corresponding to the target audio signal is played through a vehicle-mounted speaker on the target vehicle, and the target audio is obtained by adjusting a reference audio using a vehicle-mounted sound effect algorithm on the target vehicle.

[0136] It can be understood that the type, installation position, and quantity of the vehicle-mounted speaker of the target vehicle are the same as those of the standard vehicle.

[0137] The target audio signal includes a target ambient sound signal.

[0138] In some possible embodiments, when collecting the target audio signal of a vehicle speaker, the vehicle microphone can receive the target ambient sound played by other vehicle speakers. The sound effect adjustment apparatus controls the vehicle speakers on the target vehicle to play the target ambient sound in sequence to obtain the target ambient sound signals corresponding to different vehicle speakers.

[0139] In some possible embodiments, the sound effect adjustment apparatus obtains the ambient sound signal of the target ambient sound at a single specific frequency as the target ambient sound signal. In some possible embodiments, the sound effect adjustment apparatus obtains the audio signals corresponding to the target ambient sound at at least two different frequencies, and determines the target ambient sound signal.

[0140] In some possible application scenarios, S22 can include the following steps:

[0141] S221, determining a second number of second sampling points.

[0142] S222, obtaining a second sampling signal corresponding to the target ambient sound at each second sampling point.

[0143] Specifically, the sound effect adjustment apparatus obtains the second sampling signal of the target ambient sound at a specific frequency or different specified frequencies.

[0144] For example, the sound effect adjustment apparatus obtains the sampling signal of the target ambient sound at a frequency of [160, 200, 250, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000, 2500, 3150, 4000, 5000] corresponding to the second sampling point, and obtains any one or more of the amplitude, average value, and variance of each sampling signal as the second sampling signal.

[0145] S223, determining the target ambient sound signal based on each second sampling signal.

[0146] In some embodiments, the number of second sampling signals is one, and the sound effect adjustment apparatus takes the second sampling signal as the target ambient sound signal.

[0147] In some embodiments, the number of second sampling signals is multiple, and the sound effect adjustment apparatus calculates any one of the mean, median, mode, mean square deviation, and variance of the second sampling signals to obtain the target ambient sound signal.

[0148] S23, in response to the target ambient sound signal being outside a preset range, adjusting the parameter corresponding to the ambient sound in the vehicle sound effect algorithm based on the difference between the target ambient sound signal and the standard ambient sound signal.

[0149] The preset range is determined based on the standard ambient sound signal.

[0150] It should be noted that the preset range corresponding to the vehicle-mounted speaker arranged at different positions can not be completely the same.

[0151] Exemplarily, the preset range is determined based on the amplitude of the standard ambient sound signal, and satisfies the following relationship:

[0152] In-car speaker position Standard ambient sound signal amplitude Range maximum Range minimum Front left door channel 40％ 45％ 30％ Front right door channel 40％ 45％ 30％ Rear left door channel 40％ 45％ 30％ Rear right door channel 40％ 45％ 30％ Left surround channel 70％ 80％ 60％ Right surround channel 70％ 80％ 60％

[0153] The vehicle-mounted speaker of the left front door channel corresponds to the left front door midrange and high-pitched speaker; the vehicle-mounted speaker of the right front door channel corresponds to the right front door midrange and high-pitched speaker; the vehicle-mounted speaker of the left rear door channel corresponds to the left rear door high-pitched speaker and the left rear door midrange speaker; the vehicle-mounted speaker of the right rear door channel corresponds to the right rear door high-pitched speaker and the right rear door midrange speaker; and the vehicle-mounted speaker of the left surround channel corresponds to the first D-pillar surround speaker; and the vehicle-mounted speaker of the right surround channel corresponds to the second D-pillar surround speaker.

[0154] In some embodiments, in response to the amplitude of the target ambient sound signal of a certain channel being greater than the preset range, the parameter corresponding to the ambient sound in the vehicle-mounted sound effect algorithm is reduced based on the difference between the target ambient sound signal and the standard ambient sound signal until the amplitude of the target ambient sound signal of the channel is within the preset range.

[0155] In some embodiments, in response to the amplitude of the target ambient sound signal of a certain channel being less than the preset range, the parameter corresponding to the ambient sound in the vehicle-mounted sound effect algorithm is increased based on the difference between the target ambient sound signal and the standard ambient sound signal until the amplitude of the target ambient sound signal of the channel is within the preset range.

[0156] The above scheme uses the vehicle-mounted microphone of the standard vehicle to collect the standard audio played by the vehicle-mounted speaker on the standard vehicle to obtain a standard audio signal; uses the vehicle-mounted microphone of the target vehicle to collect the standard audio played by the vehicle-mounted speaker on the target vehicle to obtain a target audio signal; and in response to the target audio signal being outside the preset range determined based on the standard audio signal, adjusts the vehicle-mounted sound effect algorithm of the target vehicle based on the difference between the target audio signal and the standard audio signal. Compared with the prior art which detects whether the vehicle-mounted sound effect meets the requirements in an artificial manner, the above scheme reduces the result deviation caused by human subjectivity and improves the accuracy of the vehicle-mounted sound effect adjustment. In addition, the vehicle-mounted sound effect adjustment method provided by the present application automatically adjusts the vehicle-mounted sound effect algorithm of the target vehicle, so that the target audio finally output by the target vehicle is similar to the standard audio output by the standard vehicle.

[0157] Another embodiment of the vehicle-mounted sound effect adjustment method provided by the present application can specifically include the following steps:

[0158] S31, obtaining a standard audio signal.

[0159] The standard audio signal is obtained by a vehicle microphone of the standard vehicle collecting standard audio played by a vehicle speaker of the standard vehicle, and the standard audio is obtained by adjusting the reference audio by using a sound effect algorithm of the standard vehicle. The standard audio signal includes a standard bass signal.

[0160] Specifically, the sound effect algorithm of the standard vehicle performs a bass enhancement operation on the reference audio to obtain a standard bass. Further, the sound effect adjustment device collects the standard bass by the vehicle microphone of the standard vehicle to obtain the standard bass signal.

[0161] In some possible embodiments, the bass enhancement operation can include cutting off audio of a middle-high frequency part contained in the reference audio.

[0162] In some embodiments, the vehicle speaker is multiple and is arranged in different areas of the vehicle.

[0163] Referring to Figure 3 The vehicle speaker playing the standard bass includes at least two of a left front door bass speaker, a right front door bass speaker, a left rear door bass speaker, a right rear door bass speaker, and a bass cannon. It should be noted that the number and / or position of the vehicle speaker can be different for different vehicle models.

[0164] In some possible embodiments, when collecting the standard bass signal of a certain vehicle speaker, the vehicle microphone can receive the standard bass played by other vehicle speakers if all vehicle speakers play the standard bass at the same time. In order to reduce interference, the sound effect adjustment device controls the vehicle speakers of the standard vehicle to play the standard bass in sequence to obtain the standard bass signals corresponding to different vehicle speakers.

[0165] In some possible embodiments, the sound effect adjustment device obtains a bass signal of the standard bass at a single specific frequency as the standard bass signal. In some possible embodiments, the sound effect adjustment device obtains bass signals of the standard bass at at least two different frequencies to determine the standard bass signal.

[0166] In some application scenarios, S31 can further include the following steps:

[0167] S311, obtaining a third number of third sampling points.

[0168] In some embodiments, the sound effect adjustment device determines at least two third sampling points at different frequencies.

[0169] In some possible application scenarios, the sound effect adjusting apparatus selects sampling points in 1 / 3 octave to determine third sampling points at different frequencies. Optionally, the number of third sampling points can be 9, 16, 25, or greater than 25, which is not limited herein.

[0170] For example, the audio adjusting apparatus selects third sampling points at frequencies of [20, 25, 31, 39, 50, 63, 79, 100, 126], i.e., the number of third sampling points is 9.

[0171] S312, obtaining a third standard sampling signal of the standard bass at each third sampling point.

[0172] In some embodiments, the sound effect adjusting apparatus obtains third standard sampling signals of the standard bass at third sampling points corresponding to different frequencies.

[0173] For example, the audio adjusting apparatus obtains standard sampling signals of the standard bass at third sampling points at frequencies of [20, 25, 31, 39, 50, 63, 79, 100, 126], and obtains any one or more of the amplitude, average value, and variance of every three standard sampling signals as the third standard sampling signal.

[0174] S313, determining a standard bass signal based on each third standard sampling signal.

[0175] In some embodiments, the number of third standard sampling signals is 1, and the sound effect adjusting apparatus takes the third standard sampling signal as the standard bass signal.

[0176] In some embodiments, the number of third standard sampling signals is greater than 1, and the sound effect adjusting apparatus calculates any one of the mean, median, mode, mean square deviation, and variance of the third standard sampling signals to obtain the standard bass signal.

[0177] S32, receiving a target audio signal collected by a vehicle microphone on a target vehicle.

[0178] The target audio corresponding to the target audio signal is played through a vehicle loudspeaker on the target vehicle, and the target audio is obtained by adjusting a reference audio using a vehicle sound effect algorithm on the target vehicle.

[0179] It can be understood that the type, installation position, and number of the vehicle loudspeaker of the target vehicle are the same as those of the standard vehicle.

[0180] The target audio signal includes a target bass signal.

[0181] In some possible embodiments, when collecting the target audio signal of a certain vehicle speaker, the vehicle microphone can receive the target bass played by other vehicle speakers. The sound effect adjustment device controls the vehicle speakers on the target vehicle to play the target bass in turn to obtain the target bass signals corresponding to different vehicle speakers.

[0182] In some possible embodiments, the sound effect adjustment device obtains the bass signal of the target bass at a single specific frequency as the target bass signal. In some possible embodiments, the sound effect adjustment device obtains the audio signals corresponding to the target bass at at least two different frequencies to determine the target bass signal.

[0183] In some possible application scenarios, S32 can specifically include the following steps:

[0184] S321, determining a third number of third sampling points.

[0185] S322, obtaining a third sampling signal of the target bass at each third sampling point.

[0186] Specifically, the sound effect adjustment device obtains the third sampling signal of the target bass at a certain specific frequency or different specified frequencies.

[0187] For example, the sound effect adjustment device obtains the sampling signal of the target bass at the third sampling point with the frequency of [20, 25, 31, 39, 50, 63, 79, 100, 126], and obtains any one or more of the amplitude, mean value, and variance of each sampling signal as the third sampling signal.

[0188] S323, determining the target bass signal based on all the third sampling signals.

[0189] In some embodiments, the number of third sampling signals is one, and the sound effect adjustment device takes the third sampling signal as the target bass signal.

[0190] In some embodiments, the number of third sampling signals is multiple, and the sound effect adjustment device calculates any one of the mean, median, mode, mean square deviation, and variance of the third sampling signals to obtain the target bass signal.

[0191] S33, in response to the target bass signal being outside a preset range, adjusting the parameter corresponding to the bass in the vehicle sound effect algorithm based on the difference between the target bass signal and the standard bass signal.

[0192] The preset range is determined based on the standard bass signal.

[0193] It should be noted that the preset range corresponding to the vehicle-mounted speaker arranged at different positions can not be completely same.

[0194] Exemplarily, the preset range is determined based on the amplitude of the standard bass signal, and satisfies the following relationship:

[0195] In-car speaker position Standard subwoofer signal amplitude Range maximum Range minimum Front left door subwoofer 60％ 80％ 50％ Front right door subwoofer 60％ 80％ 50％ Rear left door subwoofer 60％ 80％ 50％ Rear right door subwoofer 60％ 80％ 50％ Subwoofer 80％ 90％ 70％

[0196] In some embodiments, in response to the amplitude of the target bass signal corresponding to a certain vehicle-mounted speaker being greater than the preset range, the parameter corresponding to the bass in the vehicle-mounted sound effect algorithm is reduced based on the difference between the target bass signal and the standard bass signal, until the amplitude of the target bass signal corresponding to the vehicle-mounted speaker is within the preset range.

[0197] In some embodiments, in response to the amplitude of the target bass signal corresponding to a certain vehicle-mounted speaker being less than the preset range, the parameter corresponding to the bass in the vehicle-mounted sound effect algorithm is increased based on the difference between the target bass signal and the standard bass, until the amplitude of the target bass signal corresponding to the vehicle-mounted speaker is within the preset range.

[0198] The above scheme uses the vehicle-mounted microphone of the standard vehicle to collect the standard audio played by the vehicle-mounted speaker on the standard vehicle to obtain a standard audio signal; uses the vehicle-mounted microphone of the target vehicle to collect the standard audio played by the vehicle-mounted speaker on the target vehicle to obtain a target audio signal; and in response to the target audio signal being outside the preset range determined based on the standard audio signal, adjusts the vehicle-mounted sound effect algorithm on the target vehicle based on the difference between the target audio signal and the standard audio signal. Compared with the prior art which adopts manual detection of whether the vehicle-mounted sound effect meets the requirements, the above scheme reduces the result deviation caused by human subjectivity and improves the accuracy of vehicle-mounted sound effect adjustment. In addition, the vehicle-mounted sound effect adjustment method provided by the present application automatically adjusts the vehicle-mounted sound effect algorithm of the target vehicle, so that the target audio finally output by the target vehicle is similar to the standard audio output by the standard vehicle.

[0199] Please refer to Figure 4 , Figure 4 is a flowchart of another embodiment of the vehicle-mounted sound effect adjustment method provided by the present application.

[0200] As Figure 4 shown, another embodiment of the vehicle-mounted sound effect adjustment method provided by the present application can specifically include the following steps:

[0201] S101, obtaining a standard audio signal corresponding to a standard vehicle.

[0202] In the car audio playback, the audio played is the same stereo sound source as the audio played by other hardware devices. The stereo sound source is composed of left and right channel data. Due to the special use scenario of the car, the car has multiple speakers, as shown in Figure 3 There are center speakers, front left door speakers, front right door speakers, rear left door speakers, rear right door speakers, D-pillar surround speakers, and subwoofer speakers.

[0203] Therefore, the sound effect adjusting device extracts direct sound and ambient sound from the stereo sound of the left and right channels through the car sound effect algorithm.

[0204] The direct sound can be understood as the voice, and the ambient sound can be understood as the accompaniment and applause that enhance the atmosphere.

[0205] The direct sound is mainly distributed to the center speaker, and the energy is distributed in proportion in the left (front and rear) door and right (front and rear) door speakers, so that the voice is more full.

[0206] The ambient sound is mainly distributed to the D-pillar surround speaker, and the energy is distributed in proportion in the left (front and rear) door and right (front and rear) door speakers, so that the audio hearing is surrounded by the atmosphere.

[0207] Further, the car sound effect algorithm cuts off the audio in the middle and high frequency part, and enhances the bass, and distributes the bass part to the subwoofer. In this way, the atmosphere and rhythm are provided.

[0208] As described above, after the development of the car sound effect algorithm is completed, the sound effect adjusting device plays a standard audio file on a standard vehicle according to the final version of the sound effect algorithm, and through a command instruction, the direct sound, the ambient sound, and the subwoofer sound are played on the separate car speakers according to the design standard. Further, the sound effect adjusting device records the audio data through the car microphone on the standard vehicle as a standard audio signal.

[0209] In some embodiments, the standard audio signal includes a standard direct sound signal, a standard ambient sound signal, and a standard subwoofer signal.

[0210] In some embodiments, the sound effect adjusting device obtains the amplitude of the direct sound signal collected by the car microphone at 16 sampling points with frequencies of [160, 200, 250, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000, 2500, 3150, 4000, 5000] for each car speaker used to play the direct sound through 1 / 3 octave sampling points.

[0211] In some embodiments, the sound effect adjusting device takes the amplitudes of the 16 direct sound signals as the amplitude parameters of the standard direct sound signal corresponding to the car speaker.

[0212] In some embodiments, the sound effect adjustment device averages the amplitudes of the 16 direct sound signals, and takes the average as the amplitude parameter of the corresponding standard direct sound signal of the vehicle-mounted speaker.

[0213] In some embodiments, the sound effect adjustment device obtains, through the 1 / 3 octave sampling points, the amplitudes of the ambient sound signals collected by the vehicle-mounted microphone at the 16 sampling points with frequencies of [160, 200, 250, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000, 2500, 3150, 4000, 5000] for each vehicle-mounted speaker used to play ambient sound.

[0214] In some embodiments, the sound effect adjustment device takes the amplitudes of the 16 ambient sound signals as the amplitude parameters of the corresponding standard ambient sound signals of the vehicle-mounted speaker.

[0215] In some embodiments, the sound effect adjustment device averages the amplitudes of the 16 ambient sound signals, and takes the average as the amplitude parameter of the corresponding standard ambient sound signal of the vehicle-mounted speaker.

[0216] In some embodiments, the sound effect adjustment device obtains, through the 1 / 3 octave sampling points, the amplitude parameters of the bass signals collected by the vehicle-mounted microphone at the 9 sampling points with frequencies of [20, 25, 31, 39, 50, 63, 79, 100, 126] for each vehicle-mounted speaker used to play bass.

[0217] In some embodiments, the sound effect adjustment device takes the amplitudes of the 9 bass signals as the amplitude parameters of the corresponding standard bass signals of the vehicle-mounted speaker.

[0218] In some embodiments, the sound effect adjustment device averages the amplitudes of the 9 bass signals, and takes the average as the amplitude parameter of the corresponding standard bass signal of the vehicle-mounted speaker.

[0219] S102, obtaining a target audio signal corresponding to a target vehicle.

[0220] Specifically, the sound effect adjustment device plays the same standard audio file on the target vehicle, and uses each vehicle-mounted speaker on the target vehicle to separately play direct sound, ambient sound, and bass, respectively. Further, the sound effect adjustment device records audio data through the vehicle-mounted microphone on the target vehicle as the target audio signal.

[0221] In some embodiments, the target audio signal includes a target direct sound signal, a target ambient sound signal, and a target bass signal.

[0222] In some embodiments, the sound effect adjustment apparatus obtains the amplitudes of the direct sound signals corresponding to the 16 sampling points as the amplitudes of the target direct sound signals corresponding to the vehicle-mounted speaker.

[0223] In some embodiments, the sound effect adjustment apparatus obtains the amplitudes of the ambient sound signals corresponding to the 16 sampling points as the amplitudes of the target ambient sound signals corresponding to the vehicle-mounted speaker. In some possible embodiments, the sound effect adjustment apparatus averages the 16 sets of amplitudes and takes the average as the amplitude of the target ambient sound signal corresponding to the vehicle-mounted speaker.

[0224] In some embodiments, the sound effect adjustment apparatus obtains the amplitudes of the bass signals corresponding to the 16 sampling points as the amplitudes of the target bass signals corresponding to the vehicle-mounted speaker. In some possible embodiments, the sound effect adjustment apparatus averages the 16 sets of amplitudes and takes the average as the amplitude of the target bass signal corresponding to the vehicle-mounted speaker.

[0225] S103, determining whether the fluctuation of the target audio signal is within a preset range.

[0226] The preset range is determined based on the standard audio signal and the position of the vehicle-mounted speaker.

[0227] In some application scenarios, the sound effect adjustment apparatus determines whether the target direct sound signal is within the preset range. In some embodiments, the sound effect adjustment apparatus determines whether the amplitudes of the direct sound signals corresponding to each sampling point are within the preset range, respectively. In some possible embodiments, the sound effect adjustment apparatus determines whether the average of all direct sound signal amplitudes is within the preset range.

[0228] Exemplarily, the preset range of the direct sound can be determined based on the following table:

[0229] In-car speaker position Standard direct sound signal amplitude Pre-set range upper limit Pre-set range lower limit Center channel 80％ 90％ 80％ Front left door channel 60％ 70％ 55％ Front right door channel 60％ 70％ 55％ Rear left door channel 60％ 70％ 55％ Rear right door channel 60％ 70％ 55％

[0230] If the target direct sound signal of a vehicle-mounted speaker is outside the preset range, go to S104.

[0231] In some application scenarios, the sound effect adjustment apparatus determines whether the target ambient sound signal is within the preset range. In some embodiments, the sound effect adjustment apparatus determines whether the amplitudes of the ambient sound signals corresponding to each sampling point are within the preset range, respectively. In some possible embodiments, the sound effect adjustment apparatus determines whether the average of all ambient sound signal amplitudes is within the preset range.

[0232] Exemplarily, the preset range of the ambient sound can be determined based on the following table:

[0233] In-car speaker position Standard ambient sound signal amplitude Pre-set range upper limit Pre-set range lower limit Front left door channel 40％ 45％ 30％ Front right door channel 40％ 45％ 30％ Rear left door channel 40％ 45％ 30％ Rear right door channel 40％ 45％ 30％ Left surround channel 70％ 80％ 60％ Right surround channel 70％ 80％ 60％

[0234] If the target ambient sound signal of a certain vehicle-mounted loudspeaker is outside the preset range, jump to S104.

[0235] In some application scenarios, the sound effect adjusting device determines whether the target bass signal is in the preset range. In some embodiments, the sound effect adjusting device determines whether the amplitude of the corresponding bass signal at each sampling point is in the preset range, respectively. In some possible embodiments, the sound effect adjusting device determines whether the average value corresponding to all bass signal amplitudes is in the preset range.

[0236] Exemplarily, the preset range of the bass can be determined based on the following table:

[0237]

[0238]

[0239] S104, in response to the fluctuation of the target audio signal being outside the preset range, adjusting the vehicle-mounted sound effect algorithm.

[0240] Specifically, in response to the amplitude of the target audio signal being outside the preset range, the sound effect adjusting device adjusts the vehicle-mounted sound effect algorithm.

[0241] In some application scenarios, in response to the amplitude of the target direct sound signal corresponding to a certain vehicle-mounted loudspeaker for playing direct sound being outside the preset range, the sound effect adjusting device adjusts the proportion of direct sound in the vehicle-mounted sound effect algorithm according to the difference between the amplitude of the target direct sound signal and the amplitude of the standard direct sound signal, and this process is repeated until the amplitude of the target direct sound signal is within the preset range.

[0242] For example, the target direct sound signal is less than the preset range, and the sound effect adjusting device increases the proportion of direct sound in the vehicle-mounted sound effect algorithm. For another example, the target direct sound signal is greater than the preset range, and the sound effect adjusting device reduces the proportion of direct sound in the vehicle-mounted sound effect algorithm.

[0243] In some application scenarios, in response to the amplitude of the target ambient sound signal corresponding to a certain vehicle-mounted loudspeaker for playing ambient sound being outside the preset range, the sound effect adjusting device adjusts the proportion of ambient sound in the vehicle-mounted sound effect algorithm according to the difference between the amplitude of the target ambient sound signal and the amplitude of the standard ambient sound signal, and this process is repeated until the amplitude of the target ambient sound signal is within the preset range.

[0244] For example, the target environmental sound signal is less than the preset range, and the sound effect adjusting device increases the proportion of environmental sound in the vehicle sound effect algorithm. For another example, the target environmental sound signal is greater than the preset range, and the sound effect adjusting device reduces the proportion of environmental sound in the vehicle sound effect algorithm.

[0245] In some application scenarios, in response to the amplitude of the target bass signal corresponding to a vehicle loudspeaker for playing bass being outside the preset range, the sound effect adjusting device adjusts the proportion of bass in the vehicle sound effect algorithm according to the difference between the amplitude of the target bass signal and the amplitude of the standard bass signal, and the process is repeated until the amplitude of the target bass signal is within the preset range.

[0246] For example, the target bass signal is less than the preset range, and the sound effect adjusting device increases the proportion of bass in the vehicle sound effect algorithm. For another example, the target bass signal is greater than the preset range, and the sound effect adjusting device reduces the proportion of bass in the vehicle sound effect algorithm.

[0247] The above scheme uses the vehicle microphone of the standard vehicle to collect the standard audio played by the vehicle loudspeaker on the standard vehicle to obtain a standard audio signal, uses the vehicle microphone of the target vehicle to collect the standard audio played by the vehicle loudspeaker on the target vehicle to obtain a target audio signal, and adjusts the vehicle sound effect algorithm of the target vehicle based on the difference between the target audio signal and the standard audio signal in response to the target audio signal being outside the preset range determined based on the standard audio signal. Compared with the prior art of detecting whether the vehicle sound effect meets the requirements in an artificial manner, the above scheme reduces the result deviation caused by human subjectivity and improves the accuracy of vehicle sound effect adjustment. In addition, the vehicle sound effect adjustment method provided in the present application automatically adjusts the vehicle sound effect algorithm of the target vehicle, so that the target audio finally output by the target vehicle is similar to the standard audio output by the standard vehicle.

[0248] Please continue to see Figure 5 , Figure 5 is a structural schematic diagram of an embodiment of a terminal device provided in the present application. The terminal device 500 of the embodiment of the present application includes a processor 51 and a memory 52.

[0249] The processor 51 and the memory 52 are connected to a bus. The memory 52 stores program data, and the processor 51 is configured to execute the program data to implement the vehicle sound effect adjustment method described in the above embodiments.

[0250] In the embodiments of the present application, the processor 51 can also be referred to as a CPU (Central Processing Unit). The processor 51 can be an integrated circuit chip with processing capability. The processor 51 can also be a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a FPGA (Field Programmable Gate Array) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The general-purpose processor can be a microprocessor, or the processor 51 can also be any conventional processor.

[0251] The present application also provides a computer storage medium, please continue to refer to Figure 6 , Figure 6 is a structural schematic diagram of an embodiment of the computer storage medium provided by the present application. The computer storage medium 600 stores program data 61, which, when executed by a processor, is used to implement the vehicle sound effect adjustment method of the above-mentioned embodiments.

[0252] When the embodiments of the present application are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application or the whole or part of the technical solutions that essentially contribute to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the method described in the various embodiments of the present application. The aforementioned storage medium includes a U disk, a mobile hard disk, a ROM (Read-Only Memory), a RAM (Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0253] The above is only the embodiment of the present application, and does not limit the patent scope of the present application. The equivalent structure or equivalent flow transformation made by the content of the specification and drawings of the present application, or the direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An adjustment method of in-vehicle sound effect, characterized by, The method comprises: acquiring a standard audio signal; wherein the standard audio signal is obtained by a vehicle microphone on a standard vehicle collecting standard audio played by a vehicle speaker on the standard vehicle; the standard audio is obtained by adjusting a reference audio by using a vehicle sound effect algorithm on the standard vehicle; receiving a target audio signal collected by a vehicle microphone on a target vehicle; the target audio signal corresponds to target audio played by a vehicle speaker on the target vehicle, and the target audio is obtained by adjusting the reference audio by using a vehicle sound effect algorithm on the target vehicle; in response to the target audio signal being outside a preset range, adjusting the vehicle sound effect algorithm on the target vehicle based on a difference between the target audio signal and the standard audio signal.

2. The method of claim 1, wherein: the target audio signal comprises a target direct sound signal, and the standard audio signal comprises a standard direct sound signal; in response to the target audio signal being outside the preset range, adjusting the vehicle sound effect algorithm on the target vehicle based on a difference between the target audio signal and the standard audio signal comprises: in response to the target direct sound signal being outside the preset range, adjusting a parameter corresponding to direct sound in the vehicle sound effect algorithm based on a difference between the target direct sound signal and the standard direct sound signal.

3. The method of claim 2, wherein: receiving the target audio signal collected by the vehicle microphone on the target vehicle comprises: determining a first number of first sampling points; acquiring a first sampling signal corresponding to the target direct sound at each of the first sampling points; based on each of the first sampling signals, determining the target direct sound signal.

4. The method of claim 1, wherein: the target audio signal comprises a target ambient sound signal, and the standard audio signal comprises a standard ambient sound signal; in response to the target audio signal being outside the preset range, adjusting the vehicle sound effect algorithm on the target vehicle based on a difference between the target audio signal and the standard audio signal comprises: in response to the target ambient sound signal being outside the preset range, adjusting a parameter corresponding to ambient sound in the vehicle sound effect algorithm based on a difference between the target ambient sound signal and the standard ambient sound signal.

5. The method of claim 4, wherein: receiving the target audio signal collected by the vehicle microphone on the target vehicle comprises: determining a second number of second sampling points; acquiring a second sampling signal corresponding to the standard ambient sound at each of the second sampling points; based on each of the second sampling signals, determining the target ambient sound signal.

6. The method of claim 1, wherein: the target audio signal comprises a target bass signal, and the standard audio signal comprises a standard bass signal; The adjusting the in-vehicle sound effect algorithm on the target vehicle based on the difference between the target audio signal and the standard audio signal in response to the target audio signal being outside the preset range comprises: In response to the target bass signal being outside the preset range, adjusting a parameter corresponding to the bass in the in-vehicle sound effect algorithm based on the difference between the target bass signal and the standard bass signal.

7. The method of claim 6, wherein, The target audio signal collected by the in-vehicle microphone on the target vehicle comprises: A third number of third sampling points are determined. A third sampling signal corresponding to each of the third sampling points of the target bass is obtained. The target bass signal is determined based on all the third sampling signals.

8. The method of claim 1, wherein, The in-vehicle speaker is a plurality of speakers arranged in different areas of the vehicle.

9. A terminal device, comprising: The terminal device comprises a processor and a memory connected to the processor, wherein, The memory stores program instructions; The processor is configured to execute the program instructions stored in the memory to implement the method of any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that, The storage medium stores program instructions, and the program instructions are executed to implement the method of any one of claims 1 to 8.

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