WO2017113607A1 - 音频信号频率响应补偿方法及装置 - Google Patents

音频信号频率响应补偿方法及装置 Download PDF

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WO2017113607A1
WO2017113607A1 PCT/CN2016/084714 CN2016084714W WO2017113607A1 WO 2017113607 A1 WO2017113607 A1 WO 2017113607A1 CN 2016084714 W CN2016084714 W CN 2016084714W WO 2017113607 A1 WO2017113607 A1 WO 2017113607A1
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Prior art keywords
audio signal
frequency response
compensation curve
audio
compensation
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French (fr)
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高伟标
朱生林
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Shenzhen TCL Digital Technology Co Ltd
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Shenzhen TCL Digital Technology Co Ltd
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Priority to US16/067,580 priority Critical patent/US10271138B2/en
Priority to EP16880415.1A priority patent/EP3399772A4/en
Publication of WO2017113607A1 publication Critical patent/WO2017113607A1/zh
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H04R3/04—Circuits for transducers for correcting frequency response
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/03—Synergistic effects of band splitting and sub-band processing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field
    • H04S7/301—Automatic calibration of stereophonic sound system, e.g. with test microphone

Definitions

  • the present invention relates to the field of audio signal processing, and in particular, to an audio signal frequency response compensation method and apparatus.
  • this debugging process is carried out in an anechoic chamber (a room without sound reflection), so that it is only a flat frequency response characteristic in the environment of the anechoic chamber.
  • the absorption, diffraction, and reflection of sound waves caused by walls and homes are flat frequency response characteristics in the anechoic chamber, which is not flat at the user's home.
  • the debugging method mentioned above only compensates for the unevenness of the speaker, but the frequency response characteristic of the human ear is not compensated (the equal loudness curve of the human ear reflects this characteristic), because the loudness curves of different human ears are also different. (Differs caused by differences in race, gender, and age). Therefore, after the speaker is debugged by the above method, the acoustic response characteristics of the speaker obtained by the user are not sufficiently flat, which further makes the sound quality less than ideal.
  • the main object of the present invention is to provide a method and device for compensating for frequency response of an audio signal, which aims to solve the technical problem that the acoustic sound response curve obtained by the audio playing device is not flat enough when the user actually uses it.
  • the present invention provides an audio signal frequency response compensation method, and the audio signal frequency response compensation method includes the following steps:
  • n sets of audio signals of different frequencies Presetting n sets of audio signals of different frequencies to obtain a minimum signal amplitude value that can be heard by each group of audio signals;
  • the n sets of audio signals of different frequencies are n sets of single-frequency sinusoidal signals of different frequencies, and each set of audio signals is composed of a single-frequency sinusoidal signal having an amplitude value ranging from small to large;
  • the corresponding filter coefficients are obtained by using a preset filter coefficient algorithm according to the frequency of the audio signal, the compensation gain, and the preset quality factor;
  • the adjusting the acoustic frequency response of the audio signal according to the low loudness compensation curve, and the step of outputting the adjusted audio signal further comprises:
  • the present invention further provides an audio signal frequency response compensation method, where the method includes:
  • the corresponding filter coefficients are obtained by using a preset filter coefficient algorithm according to the frequency of the audio signal, the compensation gain, and the preset quality factor;
  • the n sets of audio signals of different frequencies are n sets of single frequency sinusoidal signals of different frequencies, and each set of audio signals is composed of single frequency sinusoidal signals whose amplitude values are small to large.
  • the generating an audio signal frequency according to the filter coefficients corresponding to the n sets of audio signals include:
  • An audio signal frequency response compensation curve is generated according to the filter bank composed of the n filters.
  • the adjusting the acoustic frequency response of the audio signal according to the compensation curve, and outputting the adjusted audio signal comprises:
  • the adjusting the acoustic frequency response of the audio signal according to the low loudness compensation curve, and the step of outputting the adjusted audio signal further comprises:
  • the present invention further provides an audio signal frequency response compensation apparatus, where the audio signal frequency response compensation apparatus includes:
  • a minimum amplitude acquisition module configured to preset n sets of audio signals of different frequencies, and obtain a minimum signal amplitude value that can be heard by each group of audio signals;
  • a compensation gain acquisition module configured to calculate, according to the minimum signal amplitude value, a corresponding compensation gain by using a preset gain algorithm
  • a filter coefficient acquisition module configured to calculate, by using a preset filter coefficient algorithm, a corresponding filter coefficient according to a frequency, a compensation gain, and a preset quality factor of each audio signal;
  • a compensation curve generating module configured to generate an audio signal frequency response compensation curve according to the filter coefficients corresponding to the n sets of audio signals
  • the frequency response adjustment module is configured to adjust an acoustic frequency response of the audio signal according to the compensation curve, and output the adjusted audio signal.
  • the n sets of audio signals of different frequencies are n sets of single frequency sinusoidal signals of different frequencies, and each set of audio signals is composed of single frequency sinusoidal signals whose amplitude values are small to large.
  • the compensation curve generating unit comprises:
  • a filter adjusting unit configured to adjust a filter coefficient of the corresponding filter according to a filter coefficient corresponding to the n sets of audio signals
  • a filter combining unit configured to generate an audio signal frequency response compensation curve according to the filter group composed of the n filters.
  • the frequency response adjustment module comprises:
  • a low loudness compensation curve acquiring unit configured to acquire a portion of the compensation curve that is smaller than a preset frequency to generate a low loudness compensation curve
  • a low loudness compensation unit configured to adjust an acoustic frequency response of the audio signal according to the low loudness compensation curve, and output the adjusted audio signal.
  • the frequency response adjustment module further includes:
  • a signal amplitude obtaining unit configured to acquire a root mean square value of a signal amplitude of the adjusted audio signal
  • a high loudness compensation curve obtaining unit configured to: when it is determined that the root mean square value of the signal amplitude is greater than a preset threshold, obtain a portion of the compensation curve that is greater than a preset frequency to generate a high loudness compensation curve;
  • the high loudness compensation unit is configured to adjust an acoustic frequency response of the audio signal according to the high loudness compensation curve, and output the adjusted audio signal.
  • the audio signal frequency response compensation method and device provided by the embodiment of the invention adjusts the audio signal according to the characteristics of the user's human ear and the current environment, so that the audio output device is flat when the user actually uses the speaker output.
  • the acoustic sound response curve further enables the user to get better sound quality.
  • FIG. 1 is a schematic flow chart of a first embodiment of a method for compensating for a frequency response of an audio signal according to the present invention
  • FIG. 2 is a schematic diagram of a possible compensation curve generated in an embodiment of an audio signal frequency response compensation method and apparatus according to the present invention
  • FIG. 3 is a schematic flow chart of a second embodiment of a method for compensating for a frequency response of an audio signal according to the present invention
  • FIG. 4 is a schematic flow chart of a third embodiment of a method for compensating an audio signal frequency response according to the present invention.
  • FIG. 5 is a schematic diagram of functional modules of a first embodiment of an audio signal frequency response compensation apparatus according to the present invention.
  • FIG. 6 is a schematic diagram of functional modules of a second embodiment of an audio signal frequency response compensation apparatus according to the present invention.
  • FIG. 7 is a schematic diagram of functional modules of a third embodiment of an audio signal frequency response compensation apparatus according to the present invention.
  • the main solution of the embodiment of the present invention is: preset n sets of audio signals of different frequencies, and obtain a minimum signal amplitude value that can be heard by each group of audio signals; and obtain a corresponding correspondence according to the minimum signal amplitude value by using a preset gain algorithm. Compensating gain; for each set of audio signals, calculating corresponding filter coefficients by using a preset filter coefficient algorithm according to the frequency of the audio signal, the compensation gain, and the preset quality factor; generating an audio signal according to the filter coefficients corresponding to the n sets of audio signals a frequency response compensation curve; adjusting an acoustic frequency response of the audio signal according to the compensation curve, and outputting the adjusted audio signal.
  • the prior art cannot perform the audio signal frequency response compensation according to the user's human ear characteristics and the current environment when the user actually uses, the acoustic sound response curve obtained by the user is not flat enough.
  • the present invention provides a solution for the audio playback device to compensate the frequency response of the audio signal according to the characteristics of the user's human ear and the environment in which it is located, so that the sound obtained by the user has a flat acoustic sound response curve.
  • Signal frequency response compensation methods include:
  • Step S101 preset n sets of audio signals of different frequencies, and obtain a minimum signal amplitude value that can be heard by each group of audio signals;
  • n is greater than or equal to 2.
  • the audio playback device stores n sets of audio signals of different frequencies, and the n sets of audio signals of different frequencies are n sets of single-frequency sinusoidal signals of different frequencies, and each set of audio signals is changed from amplitude to small. Composed of a large single-frequency sinusoidal signal.
  • Each set of audio signals is played in sequence for the user to confirm the minimum signal amplitude value that the user can hear.
  • Step S102 calculating, according to the minimum signal amplitude value, a corresponding compensation gain by using a preset gain algorithm
  • One possible calculation method is: a minimum signal amplitude that the user can hear is divided by a corresponding signal of the audio signal. Minimum signal amplitude.
  • Step S103 for each group of audio signals, calculating corresponding filter coefficients by using a preset filter coefficient algorithm according to the frequency of the audio signal, the compensation gain, and the preset quality factor;
  • the corresponding filter coefficients are calculated according to the frequency of the audio signal, the compensation gain calculated in step S102, and the preset quality factor by a preset filter coefficient algorithm.
  • Step S104 generating an audio signal frequency response compensation curve according to the filter coefficients corresponding to the n sets of audio signals
  • the method for generating the compensation curve specifically includes:
  • An audio signal frequency response compensation curve is generated according to the filter bank composed of the n filters.
  • Step S200 adjusting an acoustic frequency response of the audio signal according to the compensation curve, and outputting the adjusted audio signal;
  • the acoustic frequency response of the audio signal is adjusted by hardware or software, so that the audio signal has a flat loudness response curve when output, further enabling the user to obtain better sound quality in the current environment.
  • each group of signals consists of a signal from small to large amplitude, denoted as Fnj, and the corresponding amplitude is recorded as Anj.
  • the interface prompts the user to cooperate to complete the sound quality setting of the scene (you can also set an option in the system settings, so that the user can re-adjust the sound quality at any time);
  • the system calls the first group of signals (such as 100Hz) according to the amplitude from small to large sound from the speaker, each signal duration is t1, the interval time is t2; if the user's pause signal is not received, the system continues to play the first group of signals The following signal;
  • the user listens to the sound of the first group of signals in the conventional television viewing position; because the amplitude of the previous signal is small, the user cannot hear the sound, and as the amplitude of the playback signal increases, the user can gradually hear the sound; the user first Press the pause when you can hear the sound, and confirm the minimum signal amplitude that can be heard;
  • the system After receiving the pause signal, the system remembers the signal sequence number F1j being played at this time (the serial number corresponds to the audio signal of the frequency of the predetermined amplitude (unit: V));
  • the system calls the second group of signals (such as 500Hz) to emit sounds from small to large. Each signal has a duration of t1 and an interval of t2. If the user's pause signal is not received, the system continues to play the second group of signals. signal;
  • the user listens to the sound of the second group of signals in the conventional television viewing position; because the amplitude of the previous signal is small, the user cannot hear the sound, and as the amplitude of the playback signal increases, the user can gradually hear the sound; the user first Press the pause when you can hear the sound, and confirm the minimum signal amplitude that can be heard;
  • the system After receiving the pause signal, the system remembers the signal sequence number F2j played at this time (the serial number corresponds to the audio signal of the frequency of the predetermined amplitude (unit: V));
  • each group of signals obtain the signal amplitude that each group of users can just hear, and calculate the required compensation curve, as shown in Figure 2, and then compensate the speaker frequency response.
  • the user the flat loudness corresponding curve corresponding to the environment, achieves a more sound quality effect, wherein the quality factor is determined according to the number of signal groups, as shown in Table 1.
  • the minimum signal amplitude that the user can hear at different frequencies is obtained, and the corresponding compensation gain is obtained by the calculation, and the frequency response compensation curve of the audio signal is generated, and finally
  • the audio signal is adjusted according to the generated audio signal frequency response compensation curve, and the adjusted audio signal is output, so that the audio playback device can more closely conform to the user's human ear characteristics and the current environment of the audio playback device.
  • a second embodiment of the audio signal frequency response compensation method according to the present invention based on the embodiment shown in FIG. 1, step S200, adjusting the acoustic frequency response of the audio signal according to the compensation curve,
  • the output adjusted audio signal includes:
  • Step S201 Acquire a portion of the compensation curve that is smaller than a preset frequency to generate a low loudness compensation curve
  • the low-loud frequency response usually needs to be compensated, so the portion of the compensation curve that is smaller than the preset frequency is acquired, and a low-loudness compensation curve is generated according to the acquired portion.
  • the preset The frequency is 600 Hz.
  • Step S202 adjusting an acoustic frequency response of the audio signal according to the low loudness compensation curve, and outputting the adjusted audio signal;
  • the frequency response compensation is performed on the low frequency portion of the audio signal in the embodiment, which solves the problem that the frequency response of the low frequency signal is insufficient when the audio signal is output.
  • a third embodiment of the audio signal frequency response compensation method according to the present invention based on the embodiment shown in FIG. 3, step S202, the sound frequency of the audio signal according to the low loudness compensation curve. After the response is adjusted, the output of the adjusted audio signal includes:
  • Step S203 acquiring a root mean square value of a signal amplitude of the adjusted audio signal
  • the adjusted audio signal is sampled in real time, and the root mean square value of the signal amplitude is obtained according to the result of sampling.
  • one possible implementation includes:
  • the real-time calculation start time point is t (that is, the t-th point, whose amplitude is recorded as), and the root mean square value of the signal with the time period T:
  • Step S204 when it is determined that the root mean square value of the signal amplitude is greater than a preset threshold, obtaining a portion of the compensation curve that is greater than the preset frequency to generate a high loudness compensation curve;
  • a root mean square value of the signal amplitude is greater than a preset threshold.
  • a root mean square value of the signal amplitude is greater than the preset threshold, obtaining a portion of the compensation curve that is greater than a preset frequency, generating The high loudness compensation curve.
  • the preset frequency is 600 Hz.
  • a second-order high-pass filter with a cutoff frequency of a preset frequency may be used.
  • Step S205 adjusting an acoustic frequency response of the audio signal according to the high loudness compensation curve, and outputting the adjusted audio signal;
  • the frequency response of the low frequency portion of the audio signal is compensated, and the rms value of the signal amplitude of the compensated audio signal is determined.
  • the preset threshold is used, the frequency response of the high frequency part of the audio signal is compensated, so that the obtained loudness response curve is flatter, so that the user can obtain a more suitable sound quality.
  • the audio signal frequency response compensation apparatus includes:
  • the minimum amplitude acquiring unit 101 is configured to preset n sets of audio signals of different frequencies, and obtain a minimum signal amplitude value that can be heard by each group of audio signals;
  • n is greater than or equal to 2.
  • the audio playback device stores n sets of audio signals of different frequencies, and the n sets of audio signals of different frequencies are n sets of single-frequency sinusoidal signals of different frequencies, and each set of audio signals is changed from amplitude to small. Composed of a large single-frequency sinusoidal signal.
  • Each set of audio signals is played in sequence for the user to confirm the minimum signal amplitude value that the user can hear.
  • the compensation gain obtaining unit 102 is configured to obtain a corresponding compensation gain by using a preset gain algorithm according to the minimum signal amplitude value;
  • One possible calculation method is: a minimum signal amplitude that the user can hear is divided by a corresponding signal of the audio signal. Minimum signal amplitude.
  • the filter coefficient obtaining unit 103 is configured to calculate, by using a preset filter coefficient algorithm, a corresponding filter coefficient according to the frequency, the compensation gain, and the preset quality factor of the audio signal for each group of audio signals;
  • the corresponding filter coefficients are obtained by the preset filter coefficient algorithm according to the frequency of the audio signal, the compensation gain calculated by the compensation gain acquisition unit 102, and the preset quality factor.
  • the compensation curve generating unit 104 is configured to generate an audio signal frequency response compensation curve according to the filter coefficients corresponding to the n sets of audio signals;
  • the method for generating the compensation curve specifically includes:
  • An audio signal frequency response compensation curve is generated according to the filter bank composed of the n filters.
  • the frequency response adjustment module 200 is configured to respond to the acoustic frequency of the audio signal according to the compensation curve Perform adjustment to output the adjusted audio signal;
  • the acoustic frequency response of the audio signal is adjusted by hardware or software, so that the audio signal has a flat loudness response curve when output, further enabling the user to obtain better sound quality in the current environment.
  • each group of signals consists of a signal from small to large amplitude, denoted as Fnj, and the corresponding amplitude is recorded as Anj.
  • the interface prompts the user to cooperate to complete the sound quality setting of the scene (you can also set an option in the system settings, so that the user can re-adjust the sound quality at any time);
  • the system calls the first group of signals (such as 100Hz) according to the amplitude from small to large sound from the speaker, each signal duration is t1, the interval time is t2; if the user's pause signal is not received, the system continues to play the first group of signals The following signal;
  • the user listens to the sound of the first group of signals in the conventional television viewing position; because the amplitude of the previous signal is small, the user cannot hear the sound, and as the amplitude of the playback signal increases, the user can gradually hear the sound; the user first Press the pause when you can hear the sound, and confirm the minimum signal amplitude that can be heard;
  • the system After receiving the pause signal, the system remembers the signal sequence number F1j being played at this time (the serial number corresponds to the audio signal of the frequency of the predetermined amplitude (unit: V));
  • the system calls the second group of signals (such as 500Hz) to emit sounds from small to large. Each signal has a duration of t1 and an interval of t2. If the user's pause signal is not received, the system continues to play the second group of signals. signal;
  • the user listens to the sound of the second group of signals in the conventional television viewing position; because the amplitude of the previous signal is small, the user cannot hear the sound, and as the amplitude of the playback signal increases, the user can gradually hear the sound; the user first Press the pause when you can hear the sound, and confirm the minimum signal amplitude that can be heard;
  • the system After receiving the pause signal, the system remembers the signal sequence number F2j played at this time (the serial number corresponds to Audio signal of the frequency of a given amplitude (in V));
  • each group of signals obtain the signal amplitude that each group of users can just hear, and calculate the required compensation curve, as shown in Figure 2, and then compensate the speaker frequency response to obtain the user and the environment.
  • the flat loudness corresponding curve achieves a more sound quality effect, wherein the quality factor is determined according to the number of signal groups, as shown in Table 1.
  • the minimum signal amplitude that the user can hear at different frequencies is obtained, and the corresponding compensation gain is obtained by the calculation, and the frequency response compensation curve of the audio signal is generated, and finally
  • the audio signal is adjusted according to the generated audio signal frequency response compensation curve, and the adjusted audio signal is output, so that the audio playback device can more closely conform to the user's human ear characteristics and the current environment of the audio playback device.
  • the frequency response adjusting module 200 includes:
  • the low loudness compensation curve acquisition unit 201 is configured to acquire a portion of the compensation curve that is smaller than the preset frequency to generate a low loudness compensation curve;
  • the low-loud frequency response usually needs to be compensated, so the portion of the compensation curve that is smaller than the preset frequency is acquired, and a low-loudness compensation curve is generated according to the acquired portion.
  • the preset The frequency is 600 Hz.
  • a low loudness compensation unit 202 configured to adjust an acoustic frequency response of the audio signal according to the low loudness compensation curve, and output the adjusted audio signal
  • the frequency response compensation is performed on the low frequency portion of the audio signal in the embodiment, which solves the problem that the frequency response of the low frequency signal is insufficient when the audio signal is output.
  • the frequency response adjusting module 200 further includes:
  • a signal amplitude obtaining unit 203 configured to acquire a root mean square value of a signal amplitude of the adjusted audio signal
  • the adjusted audio signal is sampled in real time, and the root mean square value of the signal amplitude is obtained according to the result of sampling.
  • one possible implementation includes:
  • the real-time calculation start time point is t (that is, the t-th point, whose amplitude is recorded as), and the root mean square value of the signal with the time period T:
  • the high loudness compensation curve obtaining unit 204 is configured to: when it is determined that the root mean square value of the signal amplitude is greater than a preset threshold, obtain a portion of the compensation curve that is greater than the preset frequency to generate a high loudness compensation curve;
  • a root mean square value of the signal amplitude is greater than a preset threshold.
  • a root mean square value of the signal amplitude is greater than the preset threshold, obtaining a portion of the compensation curve that is greater than a preset frequency, generating The high loudness compensation curve.
  • the preset frequency is 600 Hz.
  • a second-order high-pass filter with a cutoff frequency of a preset frequency may be used.
  • a high loudness compensation unit 205 configured to adjust an acoustic frequency response of the audio signal according to the high loudness compensation curve, and output the adjusted audio signal
  • the frequency response of the low frequency portion of the audio signal is compensated, and the rms value of the signal amplitude of the compensated audio signal is determined.
  • the preset threshold is used, the frequency response of the high frequency part of the audio signal is compensated, so that the obtained loudness response curve is flatter, so that the user can obtain a more suitable sound quality.

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Abstract

本发明公开了一种音频信号频率响应补偿方法，所述方法包括：预设n组不同频率的音频信号，获取每组音频信号用户能听到的最小信号幅度值；根据所述最小信号幅度值通过预设增益算法计算获得对应的补偿增益；针对每组音频信号，根据音频信号的频率、补偿增益和预设品质因数通过预设滤波系数算法计算获得对应的滤波系数；根据所述n组音频信号对应的滤波系数生成音频信号频率响应补偿曲线；根据所述补偿曲线对音频信号的声频率响应进行调整，输出调整后的音频信号。本发明还公开了一种音频信号频率响应补偿装置。本发明使音频播放装置可以根据用户的人耳特性及当前环境对音信信号进行调整，使用户获得更好的音质。

Description

音频信号频率响应补偿方法及装置 技术领域
本发明涉及音频信号处理领域，尤其涉及音频信号频率响应补偿方法及装置。
背景技术
在音频播放装置的设计过程中，由于扬声器本身频率响应曲线的不平坦，需要通过调整音频信号的频率响应来补偿扬声器的频率响应，以达到较为平坦的声频率响应，得到更好的音质。
一般的，这个调试过程中是在消声室(无声音反射的房间)里面进行，所以得出来的也仅是在消声室这种环境下是平坦的频率响应特性。而实际上在用户家里，由于墙壁和家居引起的声波的吸收、衍射、反射(对不同频率的声波作用不同)，在消声室是平坦的频率响应特性，在用户家里就不平坦了。另外前面所提调试方法仅补偿了扬声器的不平坦，但是补偿不了人耳不平坦的频率响应特性(人耳的等响度曲线反映这种特性)，因为，不同人的人耳等响度曲线也是不同(人种，性别的不同，年龄的不同引起的差异)。因此通过上述方法对扬声器进行调试后，用户得到的扬声器的声音响度响应特性还是不够平坦，进一步使得音质不够理想。
发明内容
本发明的主要目的在于提供一种音频信号频率响应补偿方法及装置，旨在解决音频播放装置在用户实际使用时得到的声音响度响应曲线不够平坦的技术问题。
为实现上述目的，本发明提供一种音频信号频率响应补偿方法，所述音频信号频率响应补偿方法包括以下步骤：
预设n组不同频率的音频信号，获取每组音频信号用户能听到的最小信号幅度值；所述n组不同频率的音频信号为n组不同频率的单频正弦信号，每组音频信号由幅度值从小到大的单频正弦信号组成；
根据所述最小信号幅度值通过预设增益算法计算获得对应的补偿增益；
针对每组音频信号，根据音频信号的频率、补偿增益和预设品质因数通过预设滤波系数算法计算获得对应的滤波系数；
根据所述n组音频信号对应的滤波系数调整对应的滤波器的滤波器系数；
根据所述n个滤波器组成的滤波器组生成音频信号频率响应补偿曲线；
获取所述补偿曲线中小于预设频率的部分生成低响度补偿曲线；
根据所述低响度补偿曲线对所述音频信号的声频率响应进行调整，输出调整后的音频信号。
优选地，所述根据所述低响度补偿曲线对所述音频信号的声频率响应进行调整，输出调整后的音频信号的步骤之后还包括：
获取所述调整后的音频信号的信号幅度的均方根值；
当判断到所述信号幅度的均方根值大于预设阀值时，获取所述补偿曲线中大于预设频率的部分生成高响度补偿曲线；
根据所述高响度补偿曲线对所述音频信号的声频率响应进行调整，输出调整后的音频信号。
此外，为实现上述目的，本发明还提供一种音频信号频率响应补偿方法，所述方法包括：
预设n组不同频率的音频信号，获取每组音频信号用户能听到的最小信号幅度值；
根据所述最小信号幅度值通过预设增益算法计算获得对应的补偿增益；
针对每组音频信号，根据音频信号的频率、补偿增益和预设品质因数通过预设滤波系数算法计算获得对应的滤波系数；
根据所述n组音频信号对应的滤波系数生成音频信号频率响应补偿曲线；
根据所述补偿曲线对音频信号的声频率响应进行调整，输出调整后的音频信号。
优选地，所述n组不同频率的音频信号为n组不同频率的单频正弦信号，每组音频信号由幅度值从小到大的单频正弦信号组成。
优选地，所述根据所述n组音频信号对应的滤波系数生成音频信号频率 响应补偿曲线的步骤包括：
根据所述n组音频信号对应的滤波系数调整对应的滤波器的滤波器系数；
根据所述n个滤波器组成的滤波器组生成音频信号频率响应补偿曲线。
优选地，所述根据所述补偿曲线对音频信号的声频率响应进行调整，输出调整后的音频信号的步骤包括：
获取所述补偿曲线中小于预设频率的部分生成低响度补偿曲线；
根据所述低响度补偿曲线对所述音频信号的声频率响应进行调整，输出调整后的音频信号。
优选地，所述根据所述低响度补偿曲线对所述音频信号的声频率响应进行调整，输出调整后的音频信号的步骤之后还包括：
获取所述调整后的音频信号的信号幅度的均方根值；
当判断到所述信号幅度的均方根值大于预设阀值时，获取所述补偿曲线中大于预设频率的部分生成高响度补偿曲线；
根据所述高响度补偿曲线对所述音频信号的声频率响应进行调整，输出调整后的音频信号。
此外，为实现上述目的，本发明还提供一种音频信号频率响应补偿装置，所述音频信号频率响应补偿装置包括：
最小幅度获取模块，用于预设n组不同频率的音频信号，获取每组音频信号用户能听到的最小信号幅度值；
补偿增益获取模块，用于根据所述最小信号幅度值通过预设增益算法计算获得对应的补偿增益；
滤波系数获取模块，用于针对每组音频信号，根据音频信号的频率、补偿增益和预设品质因数通过预设滤波系数算法计算获得对应的滤波系数；
补偿曲线生成模块，用于根据所述n组音频信号对应的滤波系数生成音频信号频率响应补偿曲线；
频率响应调整模块，用于根据所述补偿曲线对音频信号的声频率响应进行调整，输出调整后的音频信号。
优选地，所述n组不同频率的音频信号为n组不同频率的单频正弦信号，每组音频信号由幅度值从小到大的单频正弦信号组成。
优选地，所述补偿曲线生成单元包括：
滤波器调整单元，用于根据所述n组音频信号对应的滤波系数调整对应的滤波器的滤波器系数；
滤波器组合单元，用于根据所述n个滤波器组成的滤波器组生成音频信号频率响应补偿曲线。
优选地，所述频率响应调整模块包括：
低响度补偿曲线获取单元，用于获取所述补偿曲线中小于预设频率的部分生成低响度补偿曲线；
低响度补偿单元，用于根据所述低响度补偿曲线对所述音频信号的声频率响应进行调整，输出调整后的音频信号。
优选地，所述频率响应调整模块还包括：
信号幅度获取单元，用于获取所述调整后的音频信号的信号幅度的均方根值；
高响度补偿曲线获取单元，用于当判断到所述信号幅度的均方根值大于预设阀值时，获取所述补偿曲线中大于预设频率的部分生成高响度补偿曲线；
高响度补偿单元，用于根据所述高响度补偿曲线对所述音频信号的声频率响应进行调整，输出调整后的音频信号。
本发明实施例提出的一种音频信号频率响应补偿方法及装置，通过根据用户的人耳特性及当前所处的环境对音频信号进行调整，实现了音频播放装置在用户实际使用时，扬声器输出平坦的声音响度响应曲线，进一步使用户得到较好的音质。
附图说明
图1为本发明音频信号频率响应补偿方法的第一实施例的流程示意图；
图2为本发明音频信号频率响应补偿方法及装置的实施例中生成的一种可能的补偿曲线示意图；
图3为本发明音频信号频率响应补偿方法的第二实施例的流程示意图；
图4为本发明音频信号频率响应补偿方法的第三实施例的流程示意图；
图5为本发明音频信号频率响应补偿装置的第一实施例的功能模块示意图；
图6为本发明音频信号频率响应补偿装置的第二实施例的功能模块示意图；
图7为本发明音频信号频率响应补偿装置的第三实施例的功能模块示意图；
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
本发明实施例的主要解决方案是：预设n组不同频率的音频信号，获取每组音频信号用户能听到的最小信号幅度值；根据所述最小信号幅度值通过预设增益算法计算获得对应的补偿增益；针对每组音频信号，根据音频信号的频率、补偿增益和预设品质因数通过预设滤波系数算法计算获得对应的滤波系数；根据所述n组音频信号对应的滤波系数生成音频信号频率响应补偿曲线；根据所述补偿曲线对音频信号的声频率响应进行调整，输出调整后的音频信号。
由于现有技术无法根据用户实际使用时用户的人耳特性及当前所处环境进行音频信号频率响应补偿，使用户得到的声音响度响应曲线不够平坦。
本发明提供一种解决方案，使音频播放装置根据用户的人耳特性及所处的环境补偿音频信号的频率响应，使用户得到的声音具有平坦的声音响度响应曲线。
参照图1，为本发明音频信号频率响应补偿方法的第一实施例，所述音频 信号频率响应补偿方法包括：
步骤S101，预设n组不同频率的音频信号，获取每组音频信号用户能听到的最小信号幅度值；
针对人耳听觉范围内，预设n组不同频率的音频信号，获取每组音频信号用户能听到的最小信号幅度值，n大于等于2。当然n的值越大，不同频率的音频信号的组数越多，调整越精细，效果越好。一种较佳的实现方式为：音频播放装置存储有n组不同频率的音频信号，所述n组不同频率的音频信号为n组不同频率的单频正弦信号，每组音频信号由幅度值从小到大的单频正弦信号组成。依次播放每组音频信号，供用户确认用户能够听到的最小信号幅度值。
步骤S102，根据所述最小信号幅度值通过预设增益算法计算获得对应的补偿增益；
根据所述用户能听到的最小信号幅度值通过预设增益算法计算获得需要的补偿增益，一种可能的计算方法为：所述用户能听到的最小信号幅度除以所述音频信号对应的最小信号幅度。
步骤S103，针对每组音频信号，根据音频信号的频率、补偿增益和预设品质因数通过预设滤波系数算法计算获得对应的滤波系数；
针对每组音频信号，根据音频信号的频率、所述步骤S102计算获得的补偿增益和预设的品质因数通过预设滤波系数算法计算获得对应的滤波系数。
步骤S104，根据所述n组音频信号对应的滤波系数生成音频信号频率响应补偿曲线；
根据所述n组音频信号对应的滤波系数，按其每组音频信号对应的频率，生成音频信号频率响应补偿曲线，一般的，补偿曲线生成的方法具体包括：
根据所述n组音频信号对应的滤波系数调整对应的滤波器的滤波器系数；
根据所述n个滤波器组成的滤波器组生成音频信号频率响应补偿曲线。
步骤S200，根据所述补偿曲线对音频信号的声频率响应进行调整，输出调整后的音频信号；
根据所述补偿曲线，通过硬件或软件的方法对音频信号的声频率响应进行调整，使得所述音频信号输出时，具有平坦的响度响应曲线，进一步使得用户在当前环境下可以获得更好的音质。
具体实施时，以所述音频播放装置为电视机为例，本实施例的具体实施步骤包括：
1、电视内部预存储n组人耳听觉范围内的不同频率的单频正弦信号(如5组：100Hz、500Hz、2kHz、8kHz、15kHz；信号的组数越多，调整越精细，效果越好)，每组信号由幅度从小到大的信号组成，记为Fnj，对应的幅度记为Anj。每组信号相同序号的幅度相同，例如第一组的第一个信号F11和第二组的第一个信号F21幅度相同，即A11＝A21；
2、第一次开机后，界面提示用户配合来完成现场的音质设置(也可以在系统设置中设一个选项，让用户平时也能随时重新调整音质)；
3、用户通过遥控器控制，进入设置步骤：点击第一组信号播放；
4、系统调用第1组信号(如100Hz)按幅度从小到大从扬声器发出声音，每个信号持续时间为t1，间隔时间为t2；如果没收到用户的暂停信号，系统继续播放第1组信号后面的信号；
5、用户在常规的电视观看位置倾听第1组信号的声音；由于前面的信号幅度较小，用户听不到声音，随着播放信号幅度的增大，用户逐渐能听到声音；用户第一次能听到声音时按暂停，确认能够听到的最小信号幅度；
6、接收到暂停信号后，系统记住此时正在播放的信号序号F1j(该序号对应既定幅度(单位为V)的该频率的音频信号)；
7、用户进入设置步骤：点击第二组信号播放；
8、系统调用第2组信号(如500Hz)按幅度从小到大发出声音，每个信号持续时间为t1，间隔时间为t2；如果没收到用户的暂停信号，系统继续播放第2组信号后面的信号；
9、用户在常规的电视观看位置倾听第2组信号的声音；由于前面的信号幅度较小，用户听不到声音，随着播放信号幅度的增大，用户逐渐能听到声音；用户第一次能听到声音时按暂停，确认能够听到的最小信号幅度；
10、接收到暂停信号后，系统记住此时播放的信号序号F2j(该序号对应既定幅度(单位为V)的该频率的音频信号)；
11、重复步骤7-10，直至获得5组信号下用户能够听到的最小信号幅度；
12、根据每组信号的序号，得到每组信号用户刚好能听到的信号幅度，并计算得出需要的补偿曲线，如图2所示，进而补偿扬声器频率响应，得到 该用户、该环境对应的平坦的响度相应曲线，实现更为立项的音质效果，其中，品质因数根据信号组数决定，如表1所示。
信号组数 品质因数
5 3
6 3.5
7 4
8 4.5
9 5
10 6
表1
在本实施例中，通过设置多组不同频率的音频信号，获取用户在不同频率下用户能够听到的最小信号幅度，并由此计算获得对应的补偿增益，生成音频信号频率响应补偿曲线，最后根据生成的音频信号频率响应补偿曲线对音频信号进行调整，并输出调整后的音频信号，使得所述音频播放装置能够更为符合用户的人耳特性及音频播放装置当前所处的环境。
进一步的，参照图3，为本发明音频信号频率响应补偿方法的第二实施例，基于上述图1所示的实施例，步骤S200，根据所述补偿曲线对音频信号的声频率响应进行调整，输出调整后的音频信号包括：
步骤S201，获取所述补偿曲线中小于预设频率的部分生成低响度补偿曲线；
由于音频播放装置音频信号输出时，低响度的频率响应通常需要补偿，因此获取所述补偿曲线中小于预设频率的部分，并根据获取的部分生成低响度补偿曲线，一般的，所述预设频率为600Hz。
步骤S202，根据所述低响度补偿曲线对所述音频信号的声频率响应进行调整，输出调整后的音频信号；
根据所述低响度补偿曲线对所述音频信号的低频部分的声频率响应进行调整，并输出调整后的音频信号，使音频信号输出时具有更为平坦的响度响应曲线，进一步使用户获得更好的音质。
在本实施例中，基于上一实施例所述的优点，本实施例中对音频信号的低频部分进行频率响应补偿，解决了音频信号输出时低频信号频率响应不够的问题。
进一步的，参照图4，为本发明音频信号频率响应补偿方法的第三实施例，基于上述图3所示的实施例，步骤S202，根据所述低响度补偿曲线对所述音频信号的声频率响应进行调整，输出调整后的音频信号之后包括：
步骤S203，获取所述调整后的音频信号的信号幅度的均方根值；
对调整后的音频信号进行实时采样，并根据采用采样的结果进行计算获得信号幅度的均方根值。
针对本步骤，一种可能的实施方式包括：
1、实时采样时间段为T的各个音频信号幅度。例如采样率F为48k，则采样点数＝48k*T。以T＝200ms为例，采样点数＝48k*0.2＝9600；
2、实时计算开始时间点为t(即第t个点，其幅度记为)，时间段为T的信号的均方根值：
Figure PCTCN2016084714-appb-000001
步骤S204，当判断到所述信号幅度的均方根值大于预设阀值时，获取所述补偿曲线中大于预设频率的部分生成高响度补偿曲线；
判断所述信号幅度的均方根值是否大于预设阀值，当所述信号幅度的均方根值大于所述预设阀值时，获取所述补偿曲线中大于预设频率的部分，生成高响度补偿曲线，一般的，所述预设频率为600Hz，具体实施时，可采用截至频率为预设频率的二阶高通滤波器。
步骤S205，根据所述高响度补偿曲线对所述音频信号的声频率响应进行调整，输出调整后的音频信号；
根据所述高响度补偿曲线对所述音频信号的高频部分的声频率响应进行调整，并输出调整后的音频信号，使音频信号输出时具有更为平坦的响度响应曲线，进一步使用户获得更好的音质。
在本实施例中，基于上一实施例所述的优点，本实施例中对音频信号的低频部分进行频率响应补偿，同时根据补偿后的音频信号的信号幅度均方根值进行判断，当大于预设阀值时对音频信号的高频部分进行频率响应补偿，使得得到的响度响应曲线更为平坦，使用户获得更为适合的音质。
参照图5，为本发明音频信号频率响应补偿装置的第一实施例，所述音频信号频率响应补偿装置包括：
最小幅度获取单元101，用于预设n组不同频率的音频信号，获取每组音频信号用户能听到的最小信号幅度值；
针对人耳听觉范围内，预设n组不同频率的音频信号，获取每组音频信号用户能听到的最小信号幅度值，n大于等于2。当然n的值越大，不同频率的音频信号的组数越多，调整越精细，效果越好。一种较佳的实现方式为：音频播放装置存储有n组不同频率的音频信号，所述n组不同频率的音频信号为n组不同频率的单频正弦信号，每组音频信号由幅度值从小到大的单频正弦信号组成。依次播放每组音频信号，供用户确认用户能够听到的最小信号幅度值。
补偿增益获取单元102，用于根据所述最小信号幅度值通过预设增益算法计算获得对应的补偿增益；
根据所述用户能听到的最小信号幅度值通过预设增益算法计算获得需要的补偿增益，一种可能的计算方法为：所述用户能听到的最小信号幅度除以所述音频信号对应的最小信号幅度。
滤波系数获取单元103，用于针对每组音频信号，根据音频信号的频率、补偿增益和预设品质因数通过预设滤波系数算法计算获得对应的滤波系数；
针对每组音频信号，根据音频信号的频率、所述补偿增益获取单元102计算获得的补偿增益和预设的品质因数通过预设滤波系数算法计算获得对应的滤波系数。
补偿曲线生成单元104，用于根据所述n组音频信号对应的滤波系数生成音频信号频率响应补偿曲线；
根据所述n组音频信号对应的滤波系数，按其每组音频信号对应的频率，生成音频信号频率响应补偿曲线，一般的，补偿曲线生成的方法具体包括：
根据所述n组音频信号对应的滤波系数调整对应的滤波器的滤波器系数；
根据所述n个滤波器组成的滤波器组生成音频信号频率响应补偿曲线。
频率响应调整模块200，用于根据所述补偿曲线对音频信号的声频率响应 进行调整，输出调整后的音频信号；
根据所述补偿曲线，通过硬件或软件的方法对音频信号的声频率响应进行调整，使得所述音频信号输出时，具有平坦的响度响应曲线，进一步使得用户在当前环境下可以获得更好的音质。
具体实施时，以所述音频播放装置为电视机为例，本实施例的具体实施步骤包括：
1、电视内部预存储n组人耳听觉范围内的不同频率的单频正弦信号(如5组：100Hz、500Hz、2kHz、8kHz、15kHz；信号的组数越多，调整越精细，效果越好)，每组信号由幅度从小到大的信号组成，记为Fnj，对应的幅度记为Anj。每组信号相同序号的幅度相同，例如第一组的第一个信号F11和第二组的第一个信号F21幅度相同，即A11＝A21；
2、第一次开机后，界面提示用户配合来完成现场的音质设置(也可以在系统设置中设一个选项，让用户平时也能随时重新调整音质)；
3、用户通过遥控器控制，进入设置步骤：点击第一组信号播放；
4、系统调用第1组信号(如100Hz)按幅度从小到大从扬声器发出声音，每个信号持续时间为t1，间隔时间为t2；如果没收到用户的暂停信号，系统继续播放第1组信号后面的信号；
5、用户在常规的电视观看位置倾听第1组信号的声音；由于前面的信号幅度较小，用户听不到声音，随着播放信号幅度的增大，用户逐渐能听到声音；用户第一次能听到声音时按暂停，确认能够听到的最小信号幅度；
6、接收到暂停信号后，系统记住此时正在播放的信号序号F1j(该序号对应既定幅度(单位为V)的该频率的音频信号)；
7、用户进入设置步骤：点击第二组信号播放；
8、系统调用第2组信号(如500Hz)按幅度从小到大发出声音，每个信号持续时间为t1，间隔时间为t2；如果没收到用户的暂停信号，系统继续播放第2组信号后面的信号；
9、用户在常规的电视观看位置倾听第2组信号的声音；由于前面的信号幅度较小，用户听不到声音，随着播放信号幅度的增大，用户逐渐能听到声音；用户第一次能听到声音时按暂停，确认能够听到的最小信号幅度；
10、接收到暂停信号后，系统记住此时播放的信号序号F2j(该序号对应 既定幅度(单位为V)的该频率的音频信号)；
11、重复步骤7-10，直至获得5组信号下用户能够听到的最小信号幅度；
12、根据每组信号的序号，得到每组信号用户刚好能听到的信号幅度，并计算得出需要的补偿曲线，如图2所示，进而补偿扬声器频率响应，得到该用户、该环境对应的平坦的响度相应曲线，实现更为立项的音质效果，其中，品质因数根据信号组数决定，如表1所示。
在本实施例中，通过设置多组不同频率的音频信号，获取用户在不同频率下用户能够听到的最小信号幅度，并由此计算获得对应的补偿增益，生成音频信号频率响应补偿曲线，最后根据生成的音频信号频率响应补偿曲线对音频信号进行调整，并输出调整后的音频信号，使得所述音频播放装置能够更为符合用户的人耳特性及音频播放装置当前所处的环境。
进一步的，参照图6，为本发明音频信号频率响应补偿装置的第二实施例，基于上述图5所示的实施例，所述频率响应调整模块200包括：
低响度补偿曲线获取单元201，用于获取所述补偿曲线中小于预设频率的部分生成低响度补偿曲线；
由于音频播放装置音频信号输出时，低响度的频率响应通常需要补偿，因此获取所述补偿曲线中小于预设频率的部分，并根据获取的部分生成低响度补偿曲线，一般的，所述预设频率为600Hz。
低响度补偿单元202，用于根据所述低响度补偿曲线对所述音频信号的声频率响应进行调整，输出调整后的音频信号；
根据所述低响度补偿曲线对所述音频信号的低频部分的声频率响应进行调整，并输出调整后的音频信号，使音频信号输出时具有更为平坦的响度响应曲线，进一步使用户获得更好的音质。
在本实施例中，基于上一实施例所述的优点，本实施例中对音频信号的低频部分进行频率响应补偿，解决了音频信号输出时低频信号频率响应不够的问题。
进一步的，参照图7，为本发明音频信号频率响应补偿装置的第三实施例，基于上述图6所示的实施例，所述频率响应调整模块200还包括：
信号幅度获取单元203，用于获取所述调整后的音频信号的信号幅度的均方根值；
对调整后的音频信号进行实时采样，并根据采用采样的结果进行计算获得信号幅度的均方根值。
针对本步骤，一种可能的实施方式包括：
1、实时采样时间段为T的各个音频信号幅度。例如采样率F为48k，则采样点数＝48k*T。以T＝200ms为例，采样点数＝48k*0.2＝9600；
2、实时计算开始时间点为t(即第t个点，其幅度记为)，时间段为T的信号的均方根值：
Figure PCTCN2016084714-appb-000002
高响度补偿曲线获取单元204，用于当判断到所述信号幅度的均方根值大于预设阀值时，获取所述补偿曲线中大于预设频率的部分生成高响度补偿曲线；
判断所述信号幅度的均方根值是否大于预设阀值，当所述信号幅度的均方根值大于所述预设阀值时，获取所述补偿曲线中大于预设频率的部分，生成高响度补偿曲线，一般的，所述预设频率为600Hz，具体实施时，可采用截至频率为预设频率的二阶高通滤波器。
高响度补偿单元205，用于根据所述高响度补偿曲线对所述音频信号的声频率响应进行调整，输出调整后的音频信号；
根据所述高响度补偿曲线对所述音频信号的高频部分的声频率响应进行调整，输出调整后的音频信号，使音频信号输出时具有更为平坦的响度响应曲线，进一步使用户获得更好的音质。
在本实施例中，基于上一实施例所述的优点，本实施例中对音频信号的低频部分进行频率响应补偿，同时根据补偿后的音频信号的信号幅度均方根值进行判断，当大于预设阀值时对音频信号的高频部分进行频率响应补偿，使得得到的响度响应曲线更为平坦，使用户获得更为适合的音质。
以上仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是 利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (14)

  1. 一种音频信号频率响应补偿方法，其特征在于，所述音频信号频率响应补偿方法包括以下步骤：
    预设n组不同频率的音频信号，获取每组音频信号用户能听到的最小信号幅度值；所述n组不同频率的音频信号为n组不同频率的单频正弦信号，每组音频信号由幅度值从小到大的单频正弦信号组成；
    根据所述最小信号幅度值通过预设增益算法计算获得对应的补偿增益；
    针对每组音频信号，根据音频信号的频率、补偿增益和预设品质因数通过预设滤波系数算法计算获得对应的滤波系数；
    根据所述n组音频信号对应的滤波系数调整对应的滤波器的滤波器系数；
    根据所述n个滤波器组成的滤波器组生成音频信号频率响应补偿曲线；
    获取所述补偿曲线中小于预设频率的部分生成低响度补偿曲线；
    根据所述低响度补偿曲线对所述音频信号的声频率响应进行调整，输出调整后的音频信号。
  2. 如权利要求1所述的方法，其特征在于，所述根据所述低响度补偿曲线对所述音频信号的声频率响应进行调整，输出调整后的音频信号的步骤之后还包括：
    获取所述调整后的音频信号的信号幅度的均方根值；
    当判断到所述信号幅度的均方根值大于预设阀值时，获取所述补偿曲线中大于预设频率的部分生成高响度补偿曲线；
    根据所述高响度补偿曲线对所述音频信号的声频率响应进行调整，输出调整后的音频信号。
  3. 一种音频信号频率响应补偿方法，其特征在于，所述音频信号频率响应补偿方法包括以下步骤：
    预设n组不同频率的音频信号，获取每组音频信号用户能听到的最小信号幅度值；
    根据所述最小信号幅度值通过预设增益算法计算获得对应的补偿增益；
    针对每组音频信号，根据音频信号的频率、补偿增益和预设品质因数通过预设滤波系数算法计算获得对应的滤波系数；
    根据所述n组音频信号对应的滤波系数生成音频信号频率响应补偿曲线；
    根据所述补偿曲线对音频信号的声频率响应进行调整，输出调整后的音频信号。
  4. 如权利要求3所述的方法，其特征在于，所述n组不同频率的音频信号为n组不同频率的单频正弦信号，每组音频信号由幅度值从小到大的单频正弦信号组成。
  5. 如权利要求3所述的方法，其特征在于，所述根据所述n组音频信号对应的滤波系数生成音频信号频率响应补偿曲线的步骤包括：
    根据所述n组音频信号对应的滤波系数调整对应的滤波器的滤波器系数；
    根据所述n个滤波器组成的滤波器组生成音频信号频率响应补偿曲线。
  6. 如权利要求3所述的方法，其特征在于，所述根据所述补偿曲线对音频信号的声频率响应进行调整，输出调整后的音频信号的步骤包括：
    获取所述补偿曲线中小于预设频率的部分生成低响度补偿曲线；
    根据所述低响度补偿曲线对所述音频信号的声频率响应进行调整，输出调整后的音频信号。
  7. 如权利要求6所述的方法，其特征在于，所述根据所述低响度补偿曲线对所述音频信号的声频率响应进行调整，输出调整后的音频信号的步骤之后还包括：
    获取所述调整后的音频信号的信号幅度的均方根值；
    当判断到所述信号幅度的均方根值大于预设阀值时，获取所述补偿曲线中大于预设频率的部分生成高响度补偿曲线；
    根据所述高响度补偿曲线对所述音频信号的声频率响应进行调整，输出调整后的音频信号。
  8. 一种音频信号频率响应补偿装置，其特征在于，所述音频信号频率响应补偿装置包括：
    最小幅度获取模块，用于预设n组不同频率的音频信号，获取每组音频信号用户能听到的最小信号幅度值；
    补偿增益获取模块，用于根据所述最小信号幅度值通过预设增益算法计算获得对应的补偿增益；
    滤波系数获取模块，用于针对每组音频信号，根据音频信号的频率、补偿增益和预设品质因数通过预设滤波系数算法计算获得对应的滤波系数；
    补偿曲线生成模块，用于根据所述n组音频信号对应的滤波系数生成音频信号频率响应补偿曲线；
    频率响应调整模块，用于根据所述补偿曲线对音频信号的声频率响应进行调整，输出调整后的音频信号。
  9. 如权利要求8所述的装置，其特征在于，所述n组不同频率的音频信号为n组不同频率的单频正弦信号，每组音频信号由幅度值从小到大的单频正弦信号组成。
  10. 如权利要求8所述的装置，其特征在于，所述补偿曲线生成单元包括：
    滤波器调整单元，用于根据所述n组音频信号对应的滤波系数调整对应的滤波器的滤波器系数；
    滤波器组合单元，用于根据所述n个滤波器组成的滤波器组生成音频信号频率响应补偿曲线。
  11. 如权利要求8所述的装置，其特征在于，所述频率响应调整模块包括：
    低响度补偿曲线获取单元，用于获取所述补偿曲线中小于预设频率的部 分生成低响度补偿曲线；
    低响度补偿单元，用于根据所述低响度补偿曲线对所述音频信号的声频率响应进行调整，输出调整后的音频信号。
  12. 如权利要求11所述的装置，其特征在于，所述频率响应调整模块还包括：
    信号幅度获取单元，用于获取所述调整后的音频信号的信号幅度的均方根值；
    高响度补偿曲线获取单元，用于当判断到所述信号幅度的均方根值大于预设阀值时，获取所述补偿曲线中大于预设频率的部分生成高响度补偿曲线；
    高响度补偿单元，用于根据所述高响度补偿曲线对所述音频信号的声频率响应进行调整，输出调整后的音频信号。
  13. 如权利要求11所述的装置，其特征在于，所述n组不同频率的音频信号为n组不同频率的单频正弦信号，每组音频信号由幅度值从小到大的单频正弦信号组成。
  14. 如权利要求11所述的装置，其特征在于，所述补偿曲线生成单元包括：
    滤波器调整单元，用于根据所述n组音频信号对应的滤波系数调整对应的滤波器的滤波器系数；
    滤波器组合单元，用于根据所述n个滤波器组成的滤波器组生成音频信号频率响应补偿曲线。
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