CN103473005A - Method and device for performing sound effect control on played audio frequency - Google Patents
Method and device for performing sound effect control on played audio frequency Download PDFInfo
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- CN103473005A CN103473005A CN2013104569178A CN201310456917A CN103473005A CN 103473005 A CN103473005 A CN 103473005A CN 2013104569178 A CN2013104569178 A CN 2013104569178A CN 201310456917 A CN201310456917 A CN 201310456917A CN 103473005 A CN103473005 A CN 103473005A
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Abstract
The invention discloses a method and a device for performing sound effect control on played audio frequency. The method comprises the steps of receiving a target frequency response curve currently input by a user and determining a waveform function of a filter at an audio frequency playing terminal according to the waveform features of the received target frequency response curve currently input by the user; adjusting work parameters of the filter to enable the waveform curve output by the filter according to the determined waveform function to be consistent with the received target frequency response curve currently input by the user; controlling the filter to output the waveform to the audio frequency playing terminal for playing the audio frequency according to the adjusted work parameters of the filter. The method and the device for performing sound effect control on the played audio frequency realize that the frequency response value of the audio frequency playing terminal is correspondingly adjusted according to the command of the user, so the sound quality of the audio frequency played by the audio frequency playing terminal is adjusted to correspond to the command of the user.
Description
Technical field
The present invention relates to field of audio play, specially refer to a kind of method and device that the audio frequency of playing is carried out to sound effect control.
Background technology
At present, the audio-frequency playing terminal on market (for example, sound equipment or TV) only has one or more audio patterns, and system frequency response corresponding to various audio patterns fixed.When the audio-frequency playing terminal audio plays, the user can only select a kind of for the audio-frequency playing terminal audio plays from the audio mode prestored.
Yet in fact different user is different to the demand of the tonequality of the audio frequency of broadcasting; The somebody likes listening bass, and the somebody likes listening high pitch or middle pitch.The existing audio-frequency playing terminal that prestores the audio pattern of fixing audio frequency broadcasting, can't dynamically adjust the frequency response values of audio-frequency playing terminal, to be adjusted to the tonequality of user's expection to the demand of the audio of the audio frequency of broadcasting according to the user.
Summary of the invention
Fundamental purpose of the present invention is for providing a kind of method and device that the audio frequency of playing is carried out to sound effect control, be intended to realize the corresponding frequency response values of adjusting audio-frequency playing terminal of the instruction issued according to the user, so that the tonequality of the audio frequency that audio-frequency playing terminal is play is adjusted to the tonequality that user instruction is corresponding.
The present invention proposes a kind of method of the audio frequency of playing being carried out to sound effect control, and the method comprises:
Receive the target frequency response curve of the current input of user, determine the wave function of the wave filter of audio-frequency playing terminal according to the waveform character of the target frequency response curve of the current input of user received, described waveform character comprises frequency and amplitude;
Adjust the running parameter of described wave filter so that the squiggle that described wave filter is exported according to described definite wave function is consistent with the target frequency response curve of the current input of user of reception;
Control described wave filter according to the running parameter output waveform of the wave filter after adjusting to described audio-frequency playing terminal with audio plays.
Preferably, after the step of the target frequency response curve of the current input of described reception user, the method also comprises:
Whether analysis receives the target frequency response curve that the user inputs again within the default time;
When not receiving the target frequency response curve that the user inputs again within the default time, determine the wave function of the wave filter of audio-frequency playing terminal according to the waveform character of the target frequency response curve of the current input of user received;
When receiving the target frequency response curve that the user inputs again within the default time, the waveform character of the target frequency response curve of again inputting according to the user who receives is determined the wave function of the wave filter of audio-frequency playing terminal.
Preferably, after the waveform character of the target frequency response curve of the described current input of user according to receiving is determined the step of wave function of wave filter of audio-frequency playing terminal, the method also comprises:
Judge that whether the curve that the wave function of wave filter of definite audio-frequency playing terminal is corresponding is consistent with the target frequency response curve of the current input of user received;
When the target frequency response curve of the current input of user of corresponding curve and reception is inconsistent at the wave function of the wave filter of definite audio-frequency playing terminal, adjust the running parameter of described wave filter so that described wave filter is consistent with the target frequency response curve of the current input of user of reception according to the squiggle of definite wave function output;
When at the wave function of the wave filter of definite audio-frequency playing terminal, corresponding curve is consistent with the target frequency response curve of the current input of user of reception, control described wave filter according to the running parameter output waveform when pre-filter to described audio-frequency playing terminal with audio plays.
Preferably, the waveform character of the target frequency response curve of the described current input of user according to receiving determines that the step of wave function of the wave filter of audio-frequency playing terminal also comprises:
According to the amplitude versus frequency characte of wave filter, the target frequency response curve of the current input of user that receives is carried out to smoothing processing, and determine the wave function of the wave filter of audio-frequency playing terminal according to the waveform character of the target frequency response curve after smoothing processing.
Preferably, before the step of the target frequency response curve of the current input of described reception user, the method comprises:
Human-computer interaction interface is provided, and described human-computer interaction interface comprises take frequency as transverse axis, and the coordinate system that amplitude is the longitudinal axis, for input target frequency response curve on the coordinate system of user on human-computer interaction interface.
Preferably, described wave function is: G(fa)=H
hP 2(f
0, f
a, Q)+H
peak(f
0, f
a, Q
0, G
0)+H
peak(f
1, f
a, Q
1, G
1), wherein, G(f
a) be Frequency point f
alocate corresponding range value; H
hP 2(f
0, f
a, Q) mean that the second order high-pass filtering is 1. at f
athe range value at some place, wherein f
0for characteristic frequency, Q is quality factor; H
peak(f
0, f
a, Q
0, G
0) mean that frequency-selective filtering is 2. at f
athe range value at some place; F wherein
0for characteristic frequency, Q
0for frequency-selective filtering quality factor 2., G
0for frequency-selective filtering yield value 2.; H
peak(f
1, f
a, Q
1, G
1) mean that frequency-selective filtering is 3. at f
athe range value at some place; f
1for characteristic frequency, Q
1for frequency-selective filtering quality factor 3., G
1for frequency-selective filtering yield value 3..
The present invention also proposes a kind of device that the audio frequency of playing is carried out to sound effect control, and this device comprises:
Data sending and receiving module, for receiving the target frequency response curve of the current input of user;
Processing module, determine the wave function of the wave filter of audio-frequency playing terminal for the waveform character of the target frequency response curve of the current input of user according to receiving, described waveform character comprises frequency and amplitude;
Adjusting module, for the running parameter of adjusting described wave filter so that described wave filter is consistent with the target frequency response curve of the current input of user of reception according to the squiggle of definite wave function output;
Control module, for control described wave filter according to the running parameter output waveform of the wave filter after adjusting to described audio-frequency playing terminal with audio plays.
Preferably, this device also comprises analysis module,
Whether described analysis module, receive for analyzing the target frequency response curve that the user inputs again within the default time;
Described processing module, for when not receiving the target frequency response curve that the user inputs again within the default time, determine the wave function of the wave filter of audio-frequency playing terminal according to the waveform character of the target frequency response curve of the current input of user received; Or
When receiving the target frequency response curve that the user inputs again within the default time, the waveform character of the target frequency response curve of again inputting according to the user who receives is determined the wave function of the wave filter of audio-frequency playing terminal.
Preferably, described analysis module, also for the wave function of the wave filter that judges definite audio-frequency playing terminal, whether corresponding curve is consistent with the target frequency response curve of the current input of user received;
Described processing module, when corresponding curve is inconsistent with the target frequency response curve of the current input of user of reception for the wave function at the wave filter of definite audio-frequency playing terminal, adjust the running parameter of described wave filter so that the squiggle that described wave filter is exported according to definite wave function is consistent with the target frequency response curve of the current input of user of reception;
Described control module, when for the wave function at the wave filter of definite audio-frequency playing terminal, corresponding curve is consistent with the target frequency response curve of the current input of user of reception, control described wave filter according to the running parameter output waveform when pre-filter to described audio-frequency playing terminal with audio plays.
Preferably, described processing module, also for the amplitude versus frequency characte according to wave filter, the target frequency response curve of the current input of user that receives is carried out to smoothing processing, and determine the wave function of the wave filter of audio-frequency playing terminal according to the waveform character of the target frequency response curve after smoothing processing.
Preferably, described data sending and receiving module, also for human-computer interaction interface is provided, described human-computer interaction interface comprises take frequency as transverse axis, and the coordinate system that amplitude is the longitudinal axis, for input target frequency response curve on the coordinate system of user on human-computer interaction interface.
Preferably, described wave function is: G(fa)=H
hP 2(f
0, f
a, Q)+H
peak(f
0, f
a, Q
0, G
0)+H
peak(f
1, f
a, Q
1, G
1), wherein, G(f
a) be Frequency point f
alocate corresponding range value; H
hP 2(f
0, f
a, Q) mean that the second order high-pass filtering is 1. at f
athe range value at some place, wherein f
0for characteristic frequency, Q is quality factor; H
peak(f
0, f
a, Q
0, G
0) mean that frequency-selective filtering is 2. at f
athe range value at some place; F wherein
0for characteristic frequency, Q
0for frequency-selective filtering quality factor 2., G
0for frequency-selective filtering yield value 2.; H
peak(f
1, f
a, Q
1, G
1) mean that frequency-selective filtering is 3. at f
athe range value at some place; f
1for characteristic frequency, Q
1for frequency-selective filtering quality factor 3., G
1for frequency-selective filtering yield value 3..
Relative prior art, the present invention determines the wave function of the wave filter of audio-frequency playing terminal according to the waveform character of the target frequency response curve of the current input of user received; Adjust the running parameter of described wave filter so that described wave filter is consistent with the target frequency response curve of the current input of user of reception according to the squiggle of definite wave function output; Control described wave filter according to the running parameter output waveform of the wave filter of adjusting to described audio-frequency playing terminal with audio plays.The corresponding frequency response values of adjusting audio-frequency playing terminal of the instruction that realization issues according to the user, so that the tonequality of the audio frequency that audio-frequency playing terminal is play is adjusted to the tonequality that user instruction is corresponding.
The accompanying drawing explanation
To be the present invention carry out the particular flow sheet of the first embodiment of the method for sound effect control to the audio frequency of playing to Fig. 1;
The schematic diagram of the aim curve that Fig. 2 is user's input of the present invention;
To be the present invention carry out the particular flow sheet of the second embodiment of the method for sound effect control to the audio frequency of playing to Fig. 3;
To be the present invention carry out the particular flow sheet of the 3rd embodiment of the method for sound effect control to the audio frequency of playing to Fig. 4;
To be the present invention carry out the particular flow sheet of the first embodiment of the device of sound effect control to the audio frequency of playing to Fig. 5;
To be the present invention carry out the particular flow sheet of the second embodiment of the device of sound effect control to the audio frequency of playing to Fig. 6.
The realization of the object of the invention, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As depicted in figs. 1 and 2, to be the present invention carry out the particular flow sheet of the first embodiment of the method for sound effect control, the schematic diagram of the aim curve that Fig. 2 is user's input of the present invention to the audio frequency of playing to Fig. 1.
It is emphasized that: process flow diagram shown in Fig. 1 is only a preferred embodiment, and those skilled in the art is when knowing, any embodiment built around inventive concept should not break away from the scope contained in following technical scheme:
Receive the target frequency response curve of the current input of user, determine the wave function of the wave filter of audio-frequency playing terminal according to the waveform character of the target frequency response curve of the current input of user received, described waveform character comprises frequency and amplitude; Adjust the running parameter of described wave filter so that described wave filter is consistent with the target frequency response curve of the current input of user of reception according to the squiggle of definite wave function output; Control described wave filter according to the running parameter output waveform of the wave filter after adjusting to described audio-frequency playing terminal with audio plays.
Below that the present embodiment progressively realizes that the audio frequency to playing carries out the concrete steps of sound effect control:
Step S11, the target frequency response curve of the current input of reception user.
Concrete, human-computer interaction interface is provided, described human-computer interaction interface comprises take frequency as transverse axis, and the coordinate system that amplitude is the longitudinal axis, for input target frequency response curve on the coordinate system of user on human-computer interaction interface; Frequency on the coordinate system that described human-computer interaction interface comprises is corresponding one by one with frequency and the amplitude of audio-frequency playing terminal actual play with amplitude.During coordinate system as the user on human-computer interaction interface input target frequency response curve, receive the target frequency response curve of the current input of user, and according to the amplitude versus frequency characte of wave filter, the target frequency response curve of the current input of user that receives is carried out to smoothing processing.
Step S12, determine the wave function of the wave filter of audio-frequency playing terminal according to the waveform character of the target frequency response curve of the current input of user received, described waveform character comprises frequency and amplitude.
Concrete, with reference to Fig. 2, after the amplitude versus frequency characte according to wave filter is carried out smoothing processing to the target frequency response curve of the current input of user that receives, type according to the feature selecting wave filter of the target frequency response curve of the current input of user received, wherein, the waveform character of described target frequency response curve can comprise frequency and amplitude, also can comprise gain etc., this is not restricted herein.And described wave filter comprises Hi-pass filter, low-pass filter, bandpass filter or rejection filter etc.; Selecting one or more wave filters according to the waveform character (gain or decay) of curve, determine the wave function of the wave filter of audio-frequency playing terminal according to the type of selective filter, can be G(fa)=H
hP 2(f
0, f
a, Q)+H
peak(f
0, f
a, Q
0, G
0)+H
peak(f
1, f
a, Q
1, G
1), G(f
a) be Frequency point f
alocate corresponding range value; H
hP 2(f
0, f
a, Q) mean that the second order high-pass filtering is 1. at f
athe range value at some place, wherein f
0for characteristic frequency, Q is quality factor; H
peak(f
0, f
a, Q
0, G
0) mean that frequency-selective filtering is 2. at f
athe range value at some place; F wherein
0for characteristic frequency, Q
0for frequency-selective filtering quality factor 2., G
0for frequency-selective filtering yield value 2.; H
peak(f
1, f
a, Q
1, G
1) mean that frequency-selective filtering is 3. at f
athe range value at some place; F wherein
1for characteristic frequency, Q
1for frequency-selective filtering quality factor 3., G
1for frequency-selective filtering yield value 3., wherein 3. 1., 2. filtering reach as shown in Figure 2.
Step S13, adjust the running parameter of described wave filter so that the squiggle that described wave filter is exported according to described definite wave function is consistent with the target frequency response curve of the current input of user of reception.
Concrete, type at the waveform character selective filter of the target frequency response curve of the current input of user according to receiving, and after the wave function of the wave filter of definite audio-frequency playing terminal, adjust the running parameter of described wave filter, so that described wave filter is consistent with the target frequency response curve of the current input of user of reception according to the squiggle of definite wave function output, wherein, the parameter of described wave filter comprises centre frequency, cutoff frequency, pass band width, insertion loss or ripple etc.After the running parameter of adjusting described wave filter, whether the squiggle of the wave function output of the wave filter of the definite audio-frequency playing terminal after judgement adjustment filter parameter is consistent with the target frequency response curve of the current input of user received, when the squiggle of the wave function output of the wave filter of the definite audio-frequency playing terminal after adjusting filter parameter is consistent with the target frequency response curve of the current input of user of reception, carry out following step S14; When maybe the target frequency response curve of the current input of user of the squiggle of the function output after the wave function of the wave filter of the definite audio-frequency playing terminal after adjusting filter parameter and reception is inconsistent, continue to adjust the running parameter of described wave filter, until described wave filter is consistent with the target frequency response curve of the current input of user of reception according to the squiggle of definite wave function output.
Step S14, control described wave filter according to the running parameter output waveform after adjusting to audio-frequency playing terminal with audio plays.
Concrete, after adjusting filter parameter, when the squiggle of the wave function output of the wave filter of definite audio-frequency playing terminal is consistent with the target frequency response curve of the current input of user of reception, determine the current parameter value of wave filter and preserve, filter parameter after being about to adjust is preserved, arrange and generate the EQ(audio) data, write the DSP(digital signal processing by data input/output interface) power amplifier, the DSP power amplifier is according to the function register of the correspondence of the EQ data modification DSP power amplifier write, so that the squiggle of audio-frequency playing terminal output is consistent with the target frequency response curve, the tonequality of output user expection.With reference to figure 2, for example, by obtaining three frequency-selective filterings frequency and the range value 1., 2. and 3. on aim curve, three frequency-selective filterings that will obtain respectively frequency and range value substitution function G (f 1., 2. and 3.
a)=H
hP 2(f
0, f
a, Q)+H
peak(f
0, f
a, Q
0, G
0)+H
peak(f
1, f
a, Q
1, G
1), obtain frequency-selective filtering f 1.
0=55Hz, Q=1.5, frequency-selective filtering f 2.
0=800Hz, Q=1.8, G
0=4, frequency-selective filtering f 3.
0=5000Hz, Q=1.8, G
0=-3.8 o'clock, the squiggle of function output is consistent with the target frequency response curve, three frequency-selective filtering parameters of correspondence are preserved, and be organized into the EQ data and write the DSP power amplifier, the DSP power amplifier is revised the function register of DSP power amplifier accordingly according to the EQ data that receive, so that the squiggle of audio-frequency playing terminal (DSP power amplifier) output is consistent with the target frequency response curve, the tonequality of output user expection.
The waveform character of the target frequency response curve by the current input of user according to receiving is determined the wave function of the wave filter of audio-frequency playing terminal; Adjust the running parameter of described wave filter so that described wave filter is consistent with the target frequency response curve of the current input of user of reception according to the squiggle of definite wave function output; Control described wave filter according to the running parameter output waveform of the wave filter of adjusting to described audio-frequency playing terminal with audio plays.The corresponding frequency response values of adjusting audio-frequency playing terminal of the instruction that realization issues according to the user, so that the tonequality of the audio frequency that audio-frequency playing terminal is play is adjusted to the tonequality that user instruction is corresponding.
As shown in Figure 3, for the present invention, the audio frequency of playing is carried out the particular flow sheet of the second embodiment of the method for sound effect control.
Based on above-mentioned the first embodiment, after step S11, also comprise:
Step S15, analyzed and whether receive the target frequency response curve that the user inputs again within the default time.
Concrete, the default time, it can be the time value that the users such as 5s or 10s arrange in advance, when receiving the target frequency response data of the current input of user, and analyze whether receive the target frequency response curve that the user inputs again within the default time, when to be the user dissatisfied to the target frequency response curve of current input, continue again to input the target frequency response curve.When receiving the target frequency response curve that the user inputs again within the default time, carry out following step S16, when not receiving the target frequency response curve that the user inputs again within the default time, execution step S12.
Step S16, when receiving the target frequency response curve that the user inputs again within the default time, the waveform character of the target frequency response curve of again inputting according to the user who receives is determined the wave function of the wave filter of audio-frequency playing terminal.
Concrete, when receiving the target frequency response curve that the user inputs again within the default time, the feature of the target frequency response curve of again inputting according to the user who receives is determined the wave function of the wave filter of audio-frequency playing terminal, the target frequency response curve of user who receives not being inputted before the default time responds, and the target frequency response curve of the input again that acquiescence receives is as user's the set goal audio curve.
By the default time, while receiving the target frequency response curve that the user inputs again in Preset Time, the waveform character of the target frequency response curve of again inputting according to the user who receives is determined the wave function of the wave filter of audio-frequency playing terminal, and the waveform character of the target frequency response curve of not inputting before the default time according to the user who receives is determined the wave function of the wave filter of audio-frequency playing terminal, when avoiding the user to input continuously the target frequency response curve, target frequency response curve to all receptions responds, improve system running speed, determine in time filter parameter corresponding to user's the set goal frequency response curve, to control the audio of audio-frequency playing terminal output user expection.
As shown in Figure 4, for the present invention, the audio frequency of playing is carried out the particular flow sheet of the 3rd embodiment of the method for sound effect control.
Based on above-mentioned the first embodiment, after step S12, also comprise:
Step S17, judge that whether the squiggle of wave function output of wave filter of definite audio-frequency playing terminal is consistent with the target frequency response curve of the current input of user received.
Step S18, when the squiggle of the wave function output of the wave filter of definite audio-frequency playing terminal is consistent with the target frequency response curve of the current input of user of reception, control described wave filter according to current running parameter output waveform to described audio-frequency playing terminal with audio plays.
During the wave function of the wave filter by the audio-frequency playing terminal definite, whether the squiggle of wave function output of wave filter that judges definite audio-frequency playing terminal is consistent with the target frequency response curve of the current input of user received, and when the squiggle of the wave function output of the wave filter of definite audio-frequency playing terminal is consistent, control described wave filter according to current running parameter output waveform to described audio-frequency playing terminal with audio plays.With the squiggle wave filter operating parameter values consistent with the target frequency response curve of the wave function output of the wave filter that finds fast definite audio-frequency playing terminal, the audio of expecting to play out the user.
As shown in Figure 5, for the present invention, the audio frequency of playing is carried out the particular flow sheet of the first embodiment of the device of sound effect control.This device comprises: data sending and receiving module 10, and processing module 20, adjusting module 30 and control module 40,
Described data sending and receiving module 10, for receiving the target frequency response curve of the current input of user.
Concrete, data sending and receiving module 10 provides human-computer interaction interface, and described human-computer interaction interface comprises take frequency as transverse axis, and the coordinate system that amplitude is the longitudinal axis, for input target frequency response curve on the coordinate system of user on human-computer interaction interface; Frequency on the coordinate system that described human-computer interaction interface comprises is corresponding one by one with frequency and the amplitude of audio-frequency playing terminal actual play with amplitude.
Described processing module 20, determine the wave function of the wave filter of audio-frequency playing terminal for the waveform character of the target frequency response curve of the current input of user according to receiving, described waveform character comprises frequency and amplitude.
Concrete, when the coordinate system as the user on human-computer interaction interface is inputted the target frequency response curve, data sending and receiving module 10 receives the target frequency response curve of the current input of user, and processing module 20 is carried out smoothing processing according to the amplitude versus frequency characte of wave filter to the target frequency response curve of the current input of user that receives.With reference to Fig. 2, after according to the amplitude versus frequency characte of wave filter, the target frequency response curve of the current input of user that receives being carried out to smoothing processing in processing module 20, according to the type of the feature selecting wave filter of the target frequency response curve of the current input of user received, described wave filter comprises Hi-pass filter, low-pass filter, bandpass filter or rejection filter etc.; Selecting one or more wave filters according to the waveform character (gain or decay) of curve, determine the wave function of the wave filter of audio-frequency playing terminal according to the type of selective filter, can be G(fa)=H
hP 2(f
0, f
a, Q)+H
peak(f
0, f
a, Q
0, G
0)+H
peak(f
1, f
a, Q
1, G
1), G(f
a) be Frequency point f
alocate corresponding range value; H
hP 2(f
0, f
a, Q) mean that the second order high-pass filtering is 1. at f
athe range value at some place, wherein f
0for characteristic frequency, Q is quality factor; H
peak(f
0, f
a, Q
0, G
0) mean that frequency-selective filtering is 2. at f
athe range value at some place; F wherein
0for characteristic frequency, Q
0for frequency-selective filtering quality factor 2., G
0for frequency-selective filtering yield value 2.; H
peak(f
1, f
a, Q
1, G
1) mean that frequency-selective filtering is 3. at f
athe range value at some place; F wherein
1for characteristic frequency, Q
1for frequency-selective filtering quality factor 3., G
1for frequency-selective filtering yield value 3., wherein 3. 1., 2. filtering reach as shown in Figure 2.
Described adjusting module 30, for the running parameter of adjusting described wave filter so that described wave filter is consistent with the target frequency response curve of the current input of user of reception according to the squiggle of definite wave function output.
Concrete, type in processing module 20 according to the waveform character selective filter of the target frequency response curve of the current input of user received, and after the wave function of the wave filter of definite audio-frequency playing terminal, adjusting module 30 is adjusted the running parameter of described wave filter, so that described wave filter is consistent with the target frequency response curve of the current input of user of reception according to the squiggle of definite wave function output, wherein, the parameter of described wave filter comprises centre frequency, cutoff frequency, pass band width, insertion loss or ripple etc.After the running parameter of adjusting described wave filter, whether the squiggle of the wave function output of the wave filter of the definite audio-frequency playing terminal after analysis module 50 judgement adjustment filter parameters is consistent with the target frequency response curve of the current input of user received, when the squiggle of the wave function output of the wave filter of the definite audio-frequency playing terminal after adjusting filter parameter is consistent with the target frequency response curve of the current input of user of reception, control module 40 control described wave filter according to the running parameter output waveform of the wave filter after adjusting to described audio-frequency playing terminal with audio plays, when maybe the target frequency response curve of the current input of user of the squiggle of the function output after the wave function of the wave filter of the definite audio-frequency playing terminal after adjusting filter parameter and reception is inconsistent, adjusting module 30 continues to adjust the running parameter of described wave filter, until described wave filter is consistent with the target frequency response curve of the current input of user of reception according to the squiggle of definite wave function output.
Described control module 40, for control described wave filter according to the running parameter output waveform of the wave filter after adjusting to described audio-frequency playing terminal with audio plays.
Concrete, after adjusting filter parameter, when the squiggle of the wave function output of the wave filter of definite audio-frequency playing terminal is consistent with the target frequency response curve of the current input of user of reception, control module 40 is determined the parameter value that wave filter is current and is preserved, filter parameter after being about to adjust is preserved, arrange and generate the EQ(audio) data, write the DSP(digital signal processing by data input/output interface) power amplifier, the DSP power amplifier is according to the function register of the correspondence of the EQ data modification DSP power amplifier write, so that the squiggle of audio-frequency playing terminal output is consistent with the target frequency response curve, the tonequality of output user expection.With reference to figure 2, for example, processing module 20 is by obtaining three frequency-selective filterings frequency and the range value 1., 2. and 3. on aim curve, three frequency-selective filterings that will obtain respectively frequency and range value substitution function G (f 1., 2. and 3.
a)=H
hP 2(f
0, f
a, Q)+H
peak(f
0, f
a, Q
0, G
0)+H
peak(f
1, f
a, Q
1, G
1), obtain frequency-selective filtering f 1.
0=55Hz, Q=1.5, frequency-selective filtering f 2.
0=800Hz, Q=1.8, G
0=4, frequency-selective filtering f 3.
0=5000Hz, Q=1.8, G
0=-3.8 o'clock, the squiggle of function output is consistent with the target frequency response curve, control module 40 is preserved three frequency-selective filtering parameters of correspondence, and be organized into the EQ data and write the DSP power amplifier, the DSP power amplifier is revised the function register of DSP power amplifier accordingly according to the EQ data that receive, so that the squiggle of audio-frequency playing terminal (DSP power amplifier) output is consistent with the target frequency response curve, the tonequality of output user expection.
Determine the wave function of the wave filter of audio-frequency playing terminal according to the waveform character of the target frequency response curve of the current input of user received by processing module 20; Adjusting module 30 is adjusted the running parameter of described wave filter so that described wave filter is consistent with the target frequency response curve of the current input of user of reception according to the squiggle of definite wave function output; The described wave filter of control module 40 control gives described audio-frequency playing terminal with audio plays according to the running parameter output waveform of the wave filter of adjusting.The corresponding frequency response values of adjusting audio-frequency playing terminal of the instruction that realization issues according to the user, so that the tonequality of the audio frequency that audio-frequency playing terminal is play is adjusted to the tonequality that user instruction is corresponding.
As shown in Figure 6, for the present invention, the audio frequency of playing is carried out the particular flow sheet of the second embodiment of the device of sound effect control.This device also comprises analysis module 50,
Whether described analysis module 50, receive for analyzing the target frequency response curve that the user inputs again within the default time.
Concrete, the default time of analysis module 50, it can be the time value that the users such as 5s or 10s arrange in advance, when receiving the target frequency response data of the current input of user, and analyze whether receive the target frequency response curve that the user inputs again within the default time, when to be the user dissatisfied to the target frequency response curve of current input, continue again to input the target frequency response curve.
Described processing module 20, for when not receiving the target frequency response curve that the user inputs again within the default time, determine the wave function of the wave filter of audio-frequency playing terminal according to the waveform character of the target frequency response curve of the current input of user received; Or
When receiving the target frequency response curve that the user inputs again within the default time, the waveform character of the target frequency response curve of again inputting according to the user who receives is determined the wave function of the wave filter of audio-frequency playing terminal.
Concrete, when receiving the target frequency response curve that the user inputs again within the default time, the feature of the target frequency response curve that processing module 20 is inputted again according to the user who receives is determined the wave function of the wave filter of audio-frequency playing terminal, the target frequency response curve of user who receives not being inputted before the default time responds, and the target frequency response curve of the input again that acquiescence receives is as user's the set goal audio curve.
By the default time of analysis module 50, while receiving the target frequency response curve that the user inputs again in Preset Time, the waveform character of the target frequency response curve that processing module 20 is inputted again according to the user who receives is determined the wave function of the wave filter of audio-frequency playing terminal, and the waveform character of the target frequency response curve of not inputting before the default time according to the user who receives is determined the wave function of the wave filter of audio-frequency playing terminal, when avoiding the user to input continuously the target frequency response curve, target frequency response curve to all receptions responds, improve system running speed, determine in time filter parameter corresponding to user's the set goal frequency response curve, to control the audio of audio-frequency playing terminal output user expection.
Further, described analysis module 50, also for the wave function of the wave filter that judges definite audio-frequency playing terminal, whether corresponding curve is consistent with the target frequency response curve of the current input of user received;
Described processing module 20, when corresponding curve is inconsistent with the target frequency response curve of the current input of user of reception for the wave function at the wave filter of definite audio-frequency playing terminal, adjust the running parameter of described wave filter so that the squiggle that described wave filter is exported according to definite wave function is consistent with the target frequency response curve of the current input of user of reception;
Described control module 40, when for the wave function at the wave filter of definite audio-frequency playing terminal, corresponding curve is consistent with the target frequency response curve of the current input of user of reception, control described wave filter according to the running parameter output waveform when pre-filter to described audio-frequency playing terminal with audio plays.
During the wave function of the wave filter by the audio-frequency playing terminal definite, analysis module 50 judges that whether the squiggle of wave function output of wave filter of definite audio-frequency playing terminal is consistent with the target frequency response curve of the current input of user received, and when the squiggle of the wave function output of the wave filter of definite audio-frequency playing terminal is consistent, control module 40 control described wave filter according to current running parameter output waveform to described audio-frequency playing terminal with audio plays.With the squiggle wave filter operating parameter values consistent with the target frequency response curve of the wave function output of the wave filter that finds fast definite audio-frequency playing terminal, the audio of expecting to play out the user.
The foregoing is only the preferred embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes instructions of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present invention.
Claims (12)
1. a method of the audio frequency of playing being carried out to sound effect control, is characterized in that, the method comprises:
Receive the target frequency response curve of the current input of user, determine the wave function of the wave filter of audio-frequency playing terminal according to the waveform character of the target frequency response curve of the current input of user received, described waveform character comprises frequency and amplitude;
Adjust the running parameter of described wave filter so that the squiggle that described wave filter is exported according to described definite wave function is consistent with the target frequency response curve of the current input of user of reception;
Control described wave filter according to the running parameter output waveform after adjusting to audio-frequency playing terminal with audio plays.
2. method of the audio frequency of playing being carried out to sound effect control according to claim 1, is characterized in that, after the step of the target frequency response curve of the current input of described reception user, the method also comprises:
Whether analysis receives the target frequency response curve that the user inputs again within the default time;
When not receiving the target frequency response curve that the user inputs again within the default time, determine the wave function of the wave filter of audio-frequency playing terminal according to the waveform character of the target frequency response curve of the current input of user received;
When receiving the target frequency response curve that the user inputs again within the default time, the waveform character of the target frequency response curve of again inputting according to the user who receives is determined the wave function of the wave filter of audio-frequency playing terminal.
3. the audio frequency to broadcasting according to claim 1 and 2 carries out the method for sound effect control, it is characterized in that, after the waveform character of the target frequency response curve of the described current input of user according to receiving is determined the step of wave function of wave filter of audio-frequency playing terminal, the method also comprises:
Whether the squiggle of wave function output of wave filter that judges definite audio-frequency playing terminal is consistent with the target frequency response curve of the current input of user received;
When the squiggle of the wave function output of the wave filter of definite audio-frequency playing terminal is inconsistent with the target frequency response curve of the current input of user of reception, adjust the running parameter of described wave filter so that the squiggle that described wave filter is exported according to definite wave function is consistent with the target frequency response curve of the current input of user of reception;
When the squiggle of the wave function output of the wave filter of definite audio-frequency playing terminal is consistent with the target frequency response curve of the current input of user of reception, control described wave filter according to current running parameter output waveform to described audio-frequency playing terminal with audio plays.
4. the audio frequency to broadcasting according to claim 1 carries out the method for sound effect control, it is characterized in that, the waveform character of the target frequency response curve of the described current input of user according to receiving determines that the step of wave function of the wave filter of audio-frequency playing terminal also comprises:
According to the amplitude versus frequency characte of wave filter, the target frequency response curve of the current input of user that receives is carried out to smoothing processing, and determine the wave function of the wave filter of audio-frequency playing terminal according to the waveform character of the target frequency response curve after smoothing processing.
5. method of the audio frequency of playing being carried out to sound effect control according to claim 1 and 2, is characterized in that, before the step of the target frequency response curve of the current input of described reception user, the method comprises:
Human-computer interaction interface is provided, and described human-computer interaction interface comprises take frequency as transverse axis, and the coordinate system that amplitude is the longitudinal axis, for input target frequency response curve on the coordinate system of user on human-computer interaction interface.
6. method of the audio frequency of playing being carried out to sound effect control according to claim 1, is characterized in that, described wave function is: G(fa)=H
hP 2(f
0, f
a, Q)+H
peak(f
0, f
a, Q
0, G
0)+H
peak(f
1, f
a, Q
1, G
1), wherein, G(f
a) be Frequency point f
alocate corresponding range value; H
hP 2(f
0, f
a, Q) mean that the second order high-pass filtering is 1. at f
athe range value at some place, wherein f
0for characteristic frequency, Q is quality factor; H
peak(f
0, f
a, Q
0, G
0) mean that frequency-selective filtering is 2. at f
athe range value at some place; F wherein
0for characteristic frequency, Q
0for frequency-selective filtering quality factor 2., G
0for frequency-selective filtering yield value 2.; H
peak(f
1, f
a, Q
1, G
1) mean that frequency-selective filtering is 3. at f
athe range value at some place; f
1for characteristic frequency, Q
1for frequency-selective filtering quality factor 3., G
1for frequency-selective filtering yield value 3..
7. a device that the audio frequency of playing is carried out to sound effect control, is characterized in that, this device comprises:
Data sending and receiving module, for receiving the target frequency response curve of the current input of user;
Processing module, determine the wave function of the wave filter of audio-frequency playing terminal for the waveform character of the target frequency response curve of the current input of user according to receiving, described waveform character comprises frequency and amplitude;
Adjusting module, for the running parameter of adjusting described wave filter so that described wave filter is consistent with the target frequency response curve of the current input of user of reception according to the squiggle of described definite wave function output;
Control module, for control described wave filter according to the running parameter output waveform of the wave filter after adjusting to described audio-frequency playing terminal with audio plays.
8. the device that the audio frequency of playing is carried out to sound effect control according to claim 7, is characterized in that, this device also comprises analysis module,
Whether described analysis module, receive for analyzing the target frequency response curve that the user inputs again within the default time;
Described processing module, for when not receiving the target frequency response curve that the user inputs again within the default time, determine the wave function of the wave filter of audio-frequency playing terminal according to the waveform character of the target frequency response curve of the current input of user received; Or
When receiving the target frequency response curve that the user inputs again within the default time, the waveform character of the target frequency response curve of again inputting according to the user who receives is determined the wave function of the wave filter of audio-frequency playing terminal.
9. according to the described device that the audio frequency of playing is carried out to sound effect control of claim 7 or 8, it is characterized in that,
Described analysis module, also for the wave function of the wave filter that judges definite audio-frequency playing terminal, whether corresponding curve is consistent with the target frequency response curve of the current input of user received;
Described processing module, when corresponding curve is inconsistent with the target frequency response curve of the current input of user of reception for the wave function at the wave filter of definite audio-frequency playing terminal, adjust the running parameter of described wave filter so that the squiggle that described wave filter is exported according to definite wave function is consistent with the target frequency response curve of the current input of user of reception;
Described control module, when for the wave function at the wave filter of definite audio-frequency playing terminal, corresponding curve is consistent with the target frequency response curve of the current input of user of reception, control described wave filter according to the running parameter output waveform when pre-filter to described audio-frequency playing terminal with audio plays.
10. the device that the audio frequency of playing is carried out to sound effect control according to claim 7, is characterized in that,
Described processing module, also for the amplitude versus frequency characte according to wave filter, the target frequency response curve of the current input of user that receives is carried out to smoothing processing, and determine the wave function of the wave filter of audio-frequency playing terminal according to the waveform character of the target frequency response curve after smoothing processing.
11. according to the described device that the audio frequency of playing is carried out to sound effect control of claim 7 or 8, it is characterized in that,
Described data sending and receiving module, also for human-computer interaction interface is provided, described human-computer interaction interface comprises take frequency as transverse axis, and the coordinate system that amplitude is the longitudinal axis, for input target frequency response curve on the coordinate system of user on human-computer interaction interface.
12. the device that the audio frequency of playing is carried out to sound effect control according to claim 7 is characterized in that described wave function is: G(fa)=H
hP 2(f
0, f
a, Q)+H
peak(f
0, f
a, Q
0, G
0)+H
peak(f
1, f
a, Q
1, G
1), wherein, G(f
a) be Frequency point f
alocate corresponding range value; H
hP 2(f
0, f
a, Q) mean that the second order high-pass filtering is 1. at f
athe range value at some place, wherein f
0for characteristic frequency, Q is quality factor; H
peak(f
0, f
a, Q
0, G
0) mean that frequency-selective filtering is 2. at f
athe range value at some place; F wherein
0for characteristic frequency, Q
0for frequency-selective filtering quality factor 2., G
0for frequency-selective filtering yield value 2.; H
peak(f
1, f
a, Q
1, G
1) mean that frequency-selective filtering is 3. at f
athe range value at some place; f
1for characteristic frequency, Q
1for frequency-selective filtering quality factor 3., G
1for frequency-selective filtering yield value 3..
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