CN111935429B - Sound quality self-adaptive adjusting method, related system and equipment and storage medium - Google Patents
Sound quality self-adaptive adjusting method, related system and equipment and storage medium Download PDFInfo
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- CN111935429B CN111935429B CN202010642305.8A CN202010642305A CN111935429B CN 111935429 B CN111935429 B CN 111935429B CN 202010642305 A CN202010642305 A CN 202010642305A CN 111935429 B CN111935429 B CN 111935429B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
- H04N5/602—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for digital sound signals
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
Abstract
The invention provides a tone quality self-adaptive adjusting method, which comprises the following steps: step S1, the audio system collects the background noise of the environment; step S2, the processing module carries out noise analysis on the background noise and calculates the total output sound pressure level of the background noise according to the analysis result; step S3, the processing module calculates the gain of each frequency band to be adjusted by the power amplification module according to the analysis result; step S4, the processing module calculates the total output sound pressure level required to be generated at the target position according to the distance between the target position and the loudspeaker so as to meet the preset signal-to-noise ratio; and step S5, the power amplification module adaptively adjusts the gain of each frequency band according to the total output sound pressure level and plays the sound according to a preset playing mode through a loudspeaker. The invention also provides an audio system, a display device and a computer readable storage medium. Compared with the related technology, the technical proposal of the invention has high signal-to-noise ratio and good tone quality of the output audio.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of smart homes, in particular to a tone quality self-adaptive adjusting method applied to a display device, an audio system, the display device and a computer readable storage medium.
[ background of the invention ]
With the advent of the smart home era, the number of display devices, particularly smart televisions, is increasing. At present, the functions of the smart television are extremely diverse, and one of the functions is high-quality sound.
However, in noisy environments, a high volume sound is desired by the user; in such an environment, if the overall volume output of the smart television is increased, on one hand, the output upper limit of the whole audio system is exceeded, and on the other hand, the bearing capacity of the loudspeaker itself, especially the bearing capacity of the low frequency band, is exceeded, so that the equipment is damaged. In a quiet environment, however, a user desires high-fidelity sound. In such an environment, the volume is not a primary requirement, and it is difficult to achieve the user's expectation without making corresponding adjustments to the audio system of the smart tv.
Therefore, there is a need to provide a new method and related hardware system to solve the above technical problems.
[ summary of the invention ]
The invention aims to provide a tone quality self-adaptive adjusting method, an audio system, a display device and a computer readable storage medium, wherein the signal-to-noise ratio of output audio is high, and the tone quality is good.
In order to achieve the above object, the present invention provides a tone quality adaptive adjustment method, which is applied to an audio system, wherein the audio system comprises a speaker, a processing module and a power amplification module, and the method comprises the following steps:
step S1, the audio system collects the background noise of the environment where the audio system is located;
step S2, the processing module carries out noise analysis on the background noise and calculates the total output sound pressure level SPL of the background noise according to the analysis resultNoiseThe analysis result comprises the frequency segment number and the frequency components of the background noise and the sound pressure level corresponding to each frequency component;
step S3, the processing module calculates the gain of each frequency band that needs to be adjusted by the power amplification module according to the analysis result;
step S4, the processing module calculates the total output sound pressure level SPL required to be generated at the target position according to the distance between the target position and the speakerFinal(f) To satisfy a preset signal-to-noise ratio;
step S5, the power amplification module outputs the sound pressure level SPL according to the total output sound pressure levelFinal(f) And adaptively adjusting the gain G (f) of each frequency band, and playing the audio according to a preset playing mode through the loudspeaker.
Preferably, in the step S2, the total output sound pressure level SPLNoiseThe following formula is satisfied:
wherein, the background noise has a frequency fnIts corresponding output sound pressure level is SPLnDenoted as SPLn(f) Where N is the number of frequency bands included in the background noise, and w (f) is a weighting coefficient of each frequency component calculated according to an equal loudness curve specified in ISO-226.
Preferably, the frequency segments are generated by dividing the frequency components according to the number of frequency multiplication steps, and the number of frequency multiplication steps includes 1 octave, 1/3 octaves, 1/6 octaves, and 1/12 octaves.
Preferably, in step S2, the noise analysis is to calculate the sound pressure level of each frequency component of the background noise through the processing module, and weight and integrate the sound pressure level SPL generated by the weighted and integrated total output sound pressure level SPL according to the equal loudness curve of human ears to each frequencyNoise。
Preferably, in the step S4, the preset signal-to-noise ratio is satisfied as the overall output sound pressure level SPLFinal(f) Specific total output sound pressure level SPLNoise35dB higher.
Preferably, in the step S4, the overall output sound pressure level SPLFinal(f) The following formula is satisfied:
SPLFinal(f)＝G(f)+SPLs(f)-20log10L；
wherein G (f) is the gain, SPL, for each of said frequenciess(f) A sensitivity-to-frequency relationship function of the speaker of the audio system at 1 meter, L being a distance from the audio system to the target location.
Preferably, when the preset play mode is the hi-fi mode, the audio system satisfies the following formula under the condition that the signal-to-noise ratio of 35dB is satisfied:
SPLFinal(f)＝Target1(f)；
wherein, Target1(f) As a function of the frequency-sound pressure level relationship in the high fidelity mode.
Preferably, when the preset play mode is a high volume mode, the audio system satisfies the following formula:
SPLFinal(f)＝Target2(f)；
wherein, Target2(f) As a function of the frequency-sound pressure level relationship in the high volume mode.
Preferably, in step S5, the power amplifying module is configured to amplify the total output sound pressure level SPL according to the total output sound pressure level SPLFinal(f) The gain g (f) of each frequency band is adaptively adjusted in such a way that different frequency bands are respectively adjusted.
The present invention also provides an audio system applied to a display device, the audio system including:
the microphone is used for collecting background noise of the environment where the microphone is located;
a processing module for performing noise analysis on the background noise and calculating the total output sound pressure level SPL of the background noise according to the analysis resultNoiseCalculating the gain of each frequency band to be adjusted by the power amplification module according to the analysis result, and calculating the total output sound pressure level SPL required to be generated at the target position according to the distance between the target position and the loudspeakerFinal(f) To satisfy a predetermined signal-to-noise ratio, said divisionThe analysis result comprises the frequency band number N of the background noise, frequency components and the sound pressure level corresponding to each frequency component;
a power amplification module for outputting the sound pressure level SPL according to the total output sound pressure levelFinal(f) The gain of each frequency band is adjusted in a self-adaptive mode so as to meet the preset signal-to-noise ratio;
the loudspeaker is used for playing the audio subjected to the gain adjustment according to a preset playing mode;
the storage module is used for storing the software codes required by the processing module and providing a static memory and a dynamic memory required by the processing module in the running process;
and the power supply management module is used for managing the power supply of the audio system.
The invention also provides an audio system, which comprises a processing module and a storage module, wherein the processing module is used for reading the program in the storage module and executing the steps in the sound quality adaptive adjustment method.
The present invention also provides a computer-readable storage medium storing a program of a sound quality adaptive adjustment method that realizes the steps of the sound quality adaptive adjustment method as described in any one of the above when the program is executed by a processor.
The invention also provides a display device comprising an audio system as described above.
Compared with the related art, the sound quality adaptive adjustment method, the audio system, the display device and the computer readable storage medium of the invention comprise the following steps: step S1, the audio system collects the background noise of the environment where the audio system is located; step S2, the processing module carries out noise analysis on the background noise and calculates the total output sound pressure level SPL of the background noise according to the analysis resultNoiseThe analysis result comprises the frequency band number N of the background noise, frequency components and a sound pressure level corresponding to each frequency component; step S3, the processing module calculates the power amplification module according to the analysis resultThe gain of each frequency band to be adjusted; step S4, the processing module calculates the total output sound pressure level SPL required to be generated at the target position according to the distance between the target position and the speakerFinal(f) To satisfy a preset signal-to-noise ratio; step S5, the power amplification module outputs the sound pressure level SPL according to the total output sound pressure levelFinal(f) And adaptively adjusting the gain G (f) of each frequency band, and playing the audio according to a preset playing mode through the loudspeaker. According to the technical scheme, the processing module performs noise analysis on the background noise and calculates the total output sound pressure level SPLFinal(f) And the gain G (f) of each frequency band is adjusted in a self-adaptive manner by the power amplification module so as to meet the preset signal-to-noise ratio, so that the signal-to-noise ratio of the output audio is improved, and the sound quality of the output audio is good.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
fig. 1 is a flow chart of a tone quality adaptive adjustment method according to the present invention;
FIG. 2 is a graph of frequency versus sound pressure level of background noise according to the present invention
FIG. 3 is a graph of sensitivity as a function of frequency for an audio system of the present invention at 1 meter;
FIG. 4 is a graph of the frequency versus sound pressure level of the overall output sound pressure of the audio system of the present invention;
fig. 5 is a block diagram of an audio system according to the present invention.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the technical solutions in the embodiments can be combined with each other, but must be based on the realization of those skilled in the art.
Referring to fig. 1, the present invention provides a method for adaptively adjusting a sound quality. The method is applied to an audio system which comprises a loudspeaker, a processing module and a power amplification module. The audio system may be a circuit integrated inside a host of the display device or may be separately provided from the host. In this embodiment, the display device is an intelligent television.
The sound quality self-adaptive adjusting method comprises the following steps:
step S1, the audio system collects the background noise of the environment where it is located.
Step S2, the processing module carries out noise analysis on the background noise and calculates the total output sound pressure level SPL of the background noise according to the analysis resultNoise。
Wherein the analysis result includes the number of frequency segments of the background noise, frequency components, and a sound pressure level corresponding to each of the frequency components.
In step S2, the noise analysis is to calculate the sound pressure level of each frequency component of the background noise through the processing module, and generate the total output sound pressure level SPL after weighted accumulation according to the equal loudness curve of human ears to each frequencyNoise。
Referring to fig. 2, fig. 2 is a graph of frequency versus sound pressure level of background noise according to the present invention. The curve W1 represents SPLn(f) In step S2, the total output sound pressure level SPLNoil satisfies the following formula:
wherein, the background noise has a frequency fnIts corresponding output sound pressure level is SPLnDenoted as spln (f), N is the number of frequency bands included in the background noise, and w (f) is a weighting coefficient of each frequency component calculated according to an equal loudness curve specified in ISO-226.
The frequency segment number N is generated by dividing the frequency components according to the frequency multiplication program number, and the frequency multiplication program number comprises 1 octave, 1/3 octaves, 1/6 octaves and 1/12 octaves.
Step S3, the processing module calculates the gain of each frequency band that needs to be adjusted by the power amplification module according to the analysis result.
Step S4, the processing module calculates the total output sound pressure level SPL required to be generated at the target position according to the distance between the target position and the speakerFinal(f) To meet a preset signal-to-noise ratio.
Referring to FIG. 3, FIG. 3 is a graph showing sensitivity as a function of frequency for an audio system of the present invention at 1 meter. The curve W2 represents SPLs(f) In that respect This is a relationship determined by the acoustic performance of the loudspeaker components of the audio system themselves.
In this step S4, the overall output sound pressure level SPLFinal(f) The following formula is satisfied:
SPLFinal(f)＝G(f)+SPLs(f)-20log10L；
wherein G (f) is the gain, SPL, for each of said frequenciess(f) A sensitivity-to-frequency relationship function of the speaker of the audio system at 1 meter, L being a distance from the audio system to the target location. It can be seen that when the SPL is determinedFinal(f) The audio system may then adaptively adjust the gain g (f) for each of the frequencies. It should be noted that the parameter L is preferably provided by the smart tv manufacturer for each product.
In the step S4, the preset signal-to-noise ratio is satisfied as the overall output sound pressure level SPLFinal(f) Specific total output sound pressure level SPLNoiseHeight 35 dB. The arrangement is favorable for ensuring enough signal-to-noise ratio of the intelligent television at the specified viewing distance.
Referring to fig. 4, fig. 4 is a graph of the frequency-sound pressure level relationship of the total output sound pressure of the audio system according to the present invention. In this embodiment, the two SPLs of the overall output sound pressure level generated by the smart television at parameter LFinal(f) A given trend. Wherein W3 is Target2(f), and W4 is Target1(f) In that respect To better illustrate the effect of the invention of applying the overall output sound pressure level to adjust the gain g (f) for each of the frequencies, we illustrate separately from the audio system in hi-fi mode and high volume mode:
when the preset play mode is a high-fidelity mode, the audio system meets the following formula under the condition of meeting the signal-to-noise ratio of 35 dB:
SPLFinal(f)＝Target1(f)；
wherein Target1(f) is a relation function between frequency and sound pressure level in the high fidelity mode.
It can be seen that, in the high fidelity mode, the output sound pressure level of the smart television is required to be consistent in high and low frequency bands, so that the whole curve has good balance in the full frequency band. And adjusting the gains of high and low frequency bands of a power amplifier of the audio system under the condition that the high fidelity output of the high fidelity mode does not exceed the maximum output capacity of the audio system and the maximum bearing capacity of a loudspeaker of the audio system, so that the sound frequency spectrum of the intelligent television reaches the most balanced state in the high and low frequency bands.
When the preset playing mode is a high volume mode, the audio system meets the following formula:
SPLFinal(f)＝Target2(f)；
where Target2(f) is a function of the frequency-sound pressure level relationship in the high volume mode.
It can be seen that when the background noise is not large, the calculated SPLFinal(f) The calculated SPL is calculated as background noise gradually increases over the entire maximum output range of the audio system and the maximum tolerable range of the speaker system of the audio systemFinal(f) And also gradually increases beyond the maximum output range of the audio system or beyond the maximum withstand capability of the loudspeaker system, in which case the effect of the low frequency band is most pronounced. Therefore, under the condition of large background noise, in a high-volume mode, because the human ear is more sensitive to high-frequency sound, the low-frequency band is not promoted, and the output sound pressure level of the high-frequency band is mainly promoted. The high-volume output in the high-volume mode is to suppress the gain of the power amplification module of the audio system in a low frequency band and improve the gain of the power amplification module of the audio system in a high frequency band under the condition that the maximum output capacity of the audio system and the maximum bearing capacity of a loudspeaker of the audio system are not exceeded, so that certain imbalance of a sound spectrum of the smart television in the high frequency band and the low frequency band is allowed.
Step S5, the power amplification module outputs the sound pressure level SPL according to the total output sound pressure levelFinal(f) And adaptively adjusting the gain G (f) of each frequency band, and playing the audio according to a preset playing mode through the loudspeaker.
In step S5, the power amplification module outputs the sound pressure level SPL according to the total output sound pressure levelFinal(f) The gain g (f) of each frequency band is adaptively adjusted in such a way that different frequency bands are respectively adjusted.
Combining the above steps, the audio system performs noise analysis on the background noise through the processing module, and calculates the total output sound pressure level SPLFinal(f) And the gain G (f) of each frequency band is adjusted in a self-adaptive way by the power amplification module so as to meet the preset signal-to-noise ratio, so that the signal-to-noise ratio of the output audio is improved, and the output audio is enabled to be outputThe sound quality is good.
The invention also provides an audio system, which comprises a processing module and a storage module, wherein the processing module is used for reading the program in the storage module and executing the steps in the sound quality self-adaptive adjusting method.
The present invention also provides a computer-readable storage medium storing a program of a sound quality adaptive adjustment method, the program of the sound quality adaptive adjustment method implementing the steps of the sound quality adaptive adjustment method when executed by a processor.
Referring to fig. 5, the present invention further provides an audio system 100, which is applied to a display device. The audio system 100 may be a circuit integrated inside a host of the display device or may be separately provided from the host. In this embodiment, the display device is an intelligent television.
In this embodiment, the audio system 100 is integrated with the main body of the smart tv. Of course, without limitation, the audio system 100 may also be separated from the main body of the smart tv to form an external device.
The audio system 100 includes a microphone 1, a processing module 2, a power amplifying module 3, a speaker 4, a storage module 5 and a power management module 6.
It should be noted that the microphone 1, the processing module 2, the power amplifying module 3, the speaker 4, the storage module 5, and the power management module 6 are all components, circuits, and modules commonly used in the art, and those skilled in the art can select different specifications and models according to their actual needs, which will not be described in detail herein.
The microphone 1 is used for collecting background noise of the environment where the microphone is located.
In this embodiment, the microphone 1 is located at the center of the top of the smart tv, and the speakers 4 are located at two sides of the bottom of the smart tv. The microphones 1 include two microphones 1, the two microphones 1 are spaced and isolated, and specifically, the two microphones 1 are far away from each other as much as possible in practical design so as to prevent howling of the whole audio system.
The processing module 2 is used for performing noise analysis on the background noise and calculating the total output sound pressure level SPL of the background noise according to the analysis resultNoiseCalculating the gain of each frequency band to be adjusted by the power amplification module 3 according to the analysis result, and calculating the total output sound pressure level SPL required to be generated at the target position according to the distance between the target position and the loudspeakerFinal(f) To meet a preset signal-to-noise ratio. The analysis result comprises the frequency band number N of the background noise, frequency components and the sound pressure level corresponding to each frequency component.
The power amplification module 3 is used for outputting the sound pressure level SPL according to the total output sound pressure levelFinal(f) And adaptively adjusting the gain of each frequency band to meet the preset signal-to-noise ratio.
The loudspeaker 4 is used for playing the audio frequency after the gain adjustment according to a preset playing mode. The speaker 4 includes a plurality of speakers. In this embodiment, the number of the speakers 4 is three, one of the speakers 4 is disposed in the middle of the display device as a center sound source, and the other two speakers 4 are disposed on two sides of the display device respectively as a left sound source and a right sound source. Of course, the number of the speakers 4 may be other, such as 5, 6, 12, etc.
The storage module 5 is configured to store the software code required by the processing module 2, and provide a static memory and a dynamic memory required by the processing module 2 during the operation process.
The power management module 6 is used for power management of the audio system 100.
The present invention also provides a display device comprising a housing and the audio system 100, which may be mounted inside or on an external surface of the housing.
Compared with the related art, the sound quality adaptive adjustment method, the audio system, the display device and the computer readable storage medium of the invention comprise the following steps: step S1, the audio system adoptsCollecting background noise of the environment where the device is located; step S2, the processing module carries out noise analysis on the background noise and calculates the total output sound pressure level SPL of the background noise according to the analysis resultNoiseThe analysis result comprises the frequency band number N of the background noise, frequency components and a sound pressure level corresponding to each frequency component; step S3, the processing module calculates the gain of each frequency band that needs to be adjusted by the power amplification module according to the analysis result; step S4, the processing module calculates the total output sound pressure level SPL required to be generated at the target position according to the distance between the target position and the speakerFinal(f) To satisfy a preset signal-to-noise ratio; step S5, the power amplification module outputs the sound pressure level SPL according to the total output sound pressure levelFinal(f) And adaptively adjusting the gain G (f) of each frequency band, and playing the audio according to a preset playing mode through the loudspeaker. According to the technical scheme, the processing module performs noise analysis on the background noise and calculates the total output sound pressure level SPLFinal(f) And the gain G (f) of each frequency band is adjusted in a self-adaptive manner by the power amplification module so as to meet the preset signal-to-noise ratio, so that the signal-to-noise ratio of the output audio is improved, and the sound quality of the output audio is good.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.
Claims (12)
1. A tone quality self-adaptive adjusting method is applied to an audio system, the audio system comprises a loudspeaker, a processing module and a power amplifying module, and the method is characterized by comprising the following steps:
step S1, the audio system collects the background noise of the environment where the audio system is located;
step S2, the processing module carries out noise analysis on the background noise and calculates the total output sound pressure level SPL of the background noise according to the analysis resultNoiseSaid analysis nodeThe result comprises the frequency segment number and the frequency components of the background noise and the sound pressure level corresponding to each frequency component;
step S3, the processing module calculates the original gain of each frequency band that needs to be adjusted by the power amplification module according to the analysis result;
step S4, the processing module calculates the total output sound pressure level SPL required to be generated at the target position according to the distance between the target position and the speakerFinal(f) To meet a preset signal-to-noise ratio, the overall output sound pressure level SPLFinal(f) The following formula is satisfied:
SPLFinal(f)＝G(f)+SPLs(f)-20log10L；
wherein G (f) is the gain, SPL, of each of the frequency bandss(f) A sensitivity versus frequency function at 1 meter for the speaker of the audio system, L being a distance from the audio system to the target location;
step S5, the power amplification module outputs the sound pressure level SPL according to the total output sound pressure levelFinal(f) And adaptively adjusting the gain G (f) of each frequency band on the basis of the original gain, and playing the audio through the loudspeaker according to a preset playing mode.
2. The adaptive sound quality adjustment method according to claim 1, wherein in step S2, the total output sound pressure level SPLNoiseThe following formula is satisfied:
wherein, the background noise has a frequency fnIts corresponding output sound pressure level is SPLnDenoted as SPLn(f) Where N is the number of frequency bands included in the background noise, and w (f) is a weighting coefficient of each frequency component calculated according to an equal loudness curve specified in ISO-226.
3. The adaptive sound quality adjustment method according to claim 1, wherein the number of frequency segments is generated by dividing the frequency components by a number of octaves, the number of octaves including 1 octave, 1/3 octaves, 1/6 octaves, and 1/12 octaves.
4. The adaptive sound quality adjustment method according to claim 1, wherein in step S2, the noise analysis is to calculate the sound pressure level of each frequency component of the background noise through the processing module, and the total output sound pressure level SPL generated after weighted accumulation is performed according to an equal loudness curve of human ear to each frequencyNoise。
5. The adaptive sound quality adjustment method according to claim 1, wherein in step S4, the preset signal-to-noise ratio is satisfied as the overall output sound pressure level SPLFinal(f) Specific total output sound pressure level SPLNoise35dB higher.
6. The adaptive sound quality adjustment method according to claim 1, wherein the audio system satisfies the following formula under a condition that a signal-to-noise ratio of 35dB is satisfied when the preset playback mode is in a hi-fi mode:
SPLFinal(f)＝Target1(f)；
wherein, Target1(f) N is the number of frequency bands contained in the background noise, and w (f) is a weighting coefficient of each frequency component calculated according to an equal loudness curve specified in ISO-226.
7. The adaptive sound quality adjustment method according to claim 1, wherein the audio system is configured to satisfy the following formula when the preset playback mode is a high volume mode:
SPLFinal(f)＝Target2(f)；
wherein, Target2(f) N is the number of frequency bands included in the background noise, and w (f) is a weighting coefficient of each frequency component calculated according to an equal loudness curve specified in ISO-226.
8. The adaptive sound quality adjustment method according to claim 1, wherein in step S5, the power amplification module performs the adaptive adjustment according to the overall output sound pressure level SPLFinal(f) The gain g (f) of each frequency band is adaptively adjusted in such a way that different frequency bands are respectively adjusted.
9. An audio system is applied to display equipment and is characterized by comprising a microphone, a processing module, a power amplification module, a loudspeaker, a storage module and a power management module;
the microphone is used for collecting background noise of the environment where the microphone is located;
the processing module is used for carrying out noise analysis on the background noise and calculating the total output sound pressure level SPL of the background noise according to the analysis resultNoiseCalculating the original gain of each frequency band required to be adjusted by the power amplification module according to the analysis result, and calculating the total output sound pressure level SPL required to be generated at the target position according to the distance between the target position and the loudspeakerFinal(f) The analysis result comprises the frequency band number N of the background noise, frequency components and the sound pressure level corresponding to each frequency component;
the power amplification module is used for outputting the sound pressure level SPL according to the total output sound pressure levelFinal(f) Adaptively adjusting the respective frequencies based on the original gainGain of the segments to meet a preset signal-to-noise ratio, the overall output sound pressure level SPLFinal(f) The following formula is satisfied:
SPLFinal(f)＝G(f)+SPLs(f)-20log10L；
wherein G (f) is the gain, SPL, of each of the frequency bandss(f) A sensitivity versus frequency function at 1 meter for the speaker of the audio system, L being a distance from the audio system to the target location;
the loudspeaker is used for playing the audio frequency after the gain adjustment according to a preset playing mode;
the storage module is used for storing software codes required by the processing module and providing a static memory and a dynamic memory required by the processing module in the running process;
the power management module is used for managing power supply of the audio system.
10. An audio system, characterized in that the system comprises a processing module and a storage module, wherein the processing module is used for reading a program in the storage module and executing the steps of the adaptive sound quality adjusting method according to any one of claims 1 to 8.
11. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a program of a timbre adaptation method, which when executed by a processor, implements the steps of the timbre adaptation method as claimed in any one of claims 1 to 8.
12. A display device, characterized in that the device comprises an audio system as claimed in claim 10.
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