CN103457559A - Audio adjusting method and system - Google Patents
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Abstract
The invention discloses an audio adjusting method and system, and the method comprises the following steps: receiving an EQ adjustment instruction, adjusting a pre-established EQ curve according to the instruction, and calculating EQ data corresponding to each frequency point in the EQ curve; the EQ data of each frequency point is transmitted to an audio terminal, so that the audio terminal updates the original EQ data into the received EQ data, and the sound effect adjustment of the output audio is realized; the EQ curve takes the frequency value as the horizontal coordinate and the decibel value as the vertical coordinate; dividing frequency values corresponding to the EQ curve into multiple frequency points from low to high in sequence, wherein the frequency value corresponding to each frequency point is K times of the frequency value corresponding to the previous frequency point, and K is more than 1 and less than or equal to 2; the EQ data corresponding to each frequency point comprises: frequency value, gain value, and Q value. The method and the system provided by the invention enable a user to freely adjust the EQ curve according to the preference of the user, control the audio terminal to output the audio with the optimal sound effect, enable the user to enjoy the sound effect audio with perfect self-feeling according to the preference of the user, and improve the experience effect of the user.
Description
Technical field
The present invention relates to the audio frequency and video technical field, especially relate to a kind of voice frequency regulating method and system.
Background technology
The EQ(equalizer, effect Equalizer) is gained or is decayed by the some or a plurality of frequency ranges to sound, thereby reaches the purpose of adjusting tone color.
At present a lot of sound is looked terminal and is all had the EQ handoff functionality on the market, as the some buttons by by remote controller or voice frequency terminal panel can trigger the EQ switching.The EQ switching kind that the tradition sound is looked terminal is generally certain fixing several frequency, and the leeway that can select for the user seldom.
Summary of the invention
Main purpose of the present invention is to provide a kind of voice frequency regulating method and system, realizes that the user likes and freely adjusts the audio frequency audio that sound is looked terminal according to self, to meet different user audition demand separately, improves user's audio experience effect.
The present invention proposes a kind of voice frequency regulating method, comprising:
Receive EQ and adjust instruction, according to this EQ, adjust the EQ curve that the instruction adjustment is set up in advance, and calculate EQ data corresponding to each frequency in the EQ curve after adjusting;
The EQ transfer of data that each frequency is corresponding is to voice frequency terminal, so that voice frequency terminal is received EQ data by the original EQ Data Update of self, realizes the audio adjustment of output audio;
Described EQ curve be take frequency values as abscissa, and decibel value is ordinate; The frequency values that described EQ curve is corresponding is divided into multifrequency point from low to high successively, and the K that the frequency values that each frequency is corresponding is the frequency values that its last frequency is corresponding times, wherein, 1<K≤2;
The corresponding EQ data of described each frequency comprise: frequency values, yield value and Q value.
Preferably, the pass between the frequency values that in described EQ curve, each frequency is corresponding, yield value, Q value is:
Y_Gain=a*Q*(fre–fc)*(fre–fc)+b*Fc_gain；
Wherein, Y_Gain is represented as the yield value that frequency is the fre place;
Fc_gain represents the yield value that center frequency point is the fc place, and center frequency point fc representative of consumer is selected the frequency changed;
Q represents the Q value, and this Q value default value is " 1 ";
Fre and fc all represent value of frequency point;
A=1 or-1, a determines the opening direction of EQ curve, and " 1 " is represented as opening upwards, and Open Side Down in " 1 " representative;
B=1 or-1, depend on that gain G ain's is positive and negative.
Preferably, the described EQ transfer of data that each frequency is corresponding also comprises to before voice frequency terminal:
Receive EQ and adjust the confirmation instruction;
The described EQ transfer of data that each frequency is corresponding is specially to voice frequency terminal:
Adjust and confirm instruction according to described EQ, the EQ transfer of data that each frequency is corresponding is to voice frequency terminal.
Preferably, described EQ transfer of data is specially to voice frequency terminal: adopt USB wire transmission mode, Bluetooth wireless transmission mode or Wi-Fi wireless transmission method by described EQ transfer of data to voice frequency terminal.
Preferably, the frequency values scope that the abscissa of described EQ curve is corresponding is 20hz to 20khz, and the decibel value scope that ordinate is corresponding is-and 10db is to+10db.
A kind of audio frequency regulating system of the another proposition of the present invention, comprise intelligent terminal and voice frequency terminal, and wherein said intelligent terminal comprises:
Curve is set up module, for setting up the EQ curve;
The curve adjusting module, adjust instruction for receiving EQ, adjusts instruction according to this EQ and adjust described EQ curve, and calculate EQ data corresponding to each frequency in the EQ curve after adjusting;
Data transmission module, to voice frequency terminal, so that voice frequency terminal is received EQ data by the original EQ Data Update of self, realize the audio adjustment of output audio for the EQ transfer of data that each frequency is corresponding;
Described EQ curve be take frequency values as abscissa, and decibel value is ordinate; The frequency values that described EQ curve is corresponding is divided into multifrequency point from low to high successively, and the K that the frequency values that each frequency is corresponding is the frequency values that its last frequency is corresponding times, wherein, 1<K≤2; The corresponding EQ data of described each frequency comprise: frequency values, yield value and Q value;
Described voice frequency terminal comprises:
Data reception module, for receiving the EQ data that send from described data transmission module;
Data update module, be received EQ data for the original EQ Data Update by self, realizes the audio adjustment of output audio.
Preferably, the pass between the frequency values that in described EQ curve, each frequency is corresponding, yield value, Q value is:
Y_Gain=a*Q*(fre–fc)*(fre–fc)+b*Fc_gain；
Wherein, Y_Gain is represented as the yield value that frequency is the fre place;
Fc_gain represents the yield value that center frequency point is the fc place, and center frequency point fc representative of consumer is selected the frequency changed;
Q represents the Q value, and this Q value default value is " 1 ";
Fre and fc all represent value of frequency point;
A=1 or-1, a determines the opening direction of EQ curve, and " 1 " is represented as opening upwards, and Open Side Down in " 1 " representative;
B=1 or-1, depend on that gain G ain's is positive and negative.
Preferably, described data transmission module, specifically also adjust the confirmation instruction for receiving EQ, according to described EQ, adjusts and confirm instruction, and the EQ transfer of data that each frequency is corresponding is to voice frequency terminal.
Preferably, described data transmission module, specifically adopt USB wire transmission mode, Bluetooth wireless transmission mode or Wi-Fi wireless transmission method by described EQ transfer of data to voice frequency terminal.
Preferably, the frequency values scope that the abscissa of described EQ curve is corresponding is 20hz to 20khz, and the decibel value scope that ordinate is corresponding is-and 10db is to+10db.
A kind of voice frequency regulating method provided by the present invention and system, receive EQ by intelligent terminal and adjust instruction, according to this EQ, adjusts the EQ curve that the instruction adjustment is set up in advance, and calculate EQ data corresponding to each frequency in the EQ curve after adjusting; The EQ transfer of data that each frequency is corresponding is to voice frequency terminal, the mode that voice frequency terminal is received EQ data by the original EQ Data Update of self, make different user like and realize freely adjusting the EQ curve according to self, thereby control the audio frequency that voice frequency terminal is exported best audio, make different user like to enjoy according to self and feel perfect audio audio frequency, improved user's audio experience effect.
The accompanying drawing explanation
Fig. 1 is the flow chart of voice frequency regulating method one embodiment of the present invention;
Fig. 2 is the principle schematic of EQ curve of the present invention;
Fig. 3 is the structural representation of audio frequency regulating system one embodiment of the present invention;
Fig. 4 is the structural representation of intelligent terminal in audio frequency regulating system of the present invention;
Fig. 5 is the structural representation of audio frequency regulating system sound intermediate frequency terminal of the present invention.
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.
Referring to Fig. 1, a kind of voice frequency regulating method one embodiment of the present invention is proposed, comprising:
Step S101, reception EQ adjust instruction, according to this EQ, adjust the EQ curve that instruction adjustment is set up in advance, and calculate EQ data corresponding to each frequency in the EQ curve after adjusting.
Referring to Fig. 2, in the present embodiment, the EQ curve of described default foundation be take frequency values as abscissa, and the frequency values scope is 20hz to 20khz; Decibel value is ordinate, and the decibel value scope is-and 10db is to+10db, and this decibel value scope is the maximum magnitude value that chip can bear.
In the present embodiment, the frequency values that described EQ curve is corresponding is divided into multifrequency point from low to high successively, and the k that the frequency values that each frequency is corresponding is the frequency values that its last frequency is corresponding times, wherein, 1<k≤2; Preferably, described
be below to take k=1.26 as example, the division methods of intermediate-frequeney point of the present invention is described, its concrete division methods is as follows:
If be 10 octaves altogether from 20hz to 20khz, be divided into 30 frequencies;
Each octave is carried out the geometric ratio trisection,
If take 20hz as initial frequency f0, f1=k*f0, f2=f1*k=k* (k*f0)=k*k*f0 ..., f30=f29*k=20.03khz;
Work as k=1.26, on the abscissa of described EQ curve, 30 corresponding frequencies are followed successively by: 25hz, 31.5hz, 40hz, 50hz ..., 12.5khz, 15khz, 20khz.
Above frequency is referred to as the set of center frequency point fc, and the center frequency point that can select for the user is 30.In the present embodiment, yield value (Gain) represents the height of EQ curve; The scope of the ordinate of described EQ curve is-10db is to+10db, if the value-10db of EQ curve ordinate bottommost is set as to " 0 "; Middle value 0db is set as " 10 "; Value+the 10db of top is set as " 20 "; Suppose current frequency, after overregulating, the value y of ordinate changes to y2=16 by the y1=10 of acquiescence, yield value (Gain)=y2 – y1=6db;
When adjusting the value that reduces certain frequency, the value y of ordinate changes to y2=1 by the y1=10 of acquiescence, yield value (Gain)=y2 – y1=-9db; The rest may be inferred.
In the present embodiment, the Q value is determined the width of EQ curve; The present embodiment is in order to simplify the calculating of Q value, and the default value of establishing the Q value is " 1 ", and establishes 4 grades of Q values and freely select for the user; These 4 grades of Q values are made as respectively: Q1=0.5, Q2=1, Q3=2, Q4=3, and Q2=1 is default value; Wherein, the Q value is larger, and the width of EQ curve is narrower; Otherwise the Q value is less, the width of EQ curve is wider.
In the present embodiment, the EQ data that in described EQ curve, each frequency is corresponding comprise: frequency values, yield value and Q value.Wherein, the pass between the frequency values that each frequency is corresponding in described EQ curve, yield value, Q value is:
Y_Gain=a*Q*(fre–fc)*(fre–fc)+b*Fc_gain；
Wherein, Y_Gain is represented as the yield value that frequency is the fre place;
Fc_gain represents the yield value that center frequency point is the fc place, and center frequency point fc representative of consumer is selected the frequency changed;
Q represents the Q value, and this Q value default value is " 1 ";
Fre and fc all represent value of frequency point, and span is 20hz – 20khz;
A=1 or-1, a determines the opening direction of EQ curve, and " 1 " is represented as opening upwards, and Open Side Down in " 1 " representative;
B=1 or-1, depend on that gain G ain's is positive and negative.
In the present embodiment, it is that intelligent terminal is adjusted and generated the EQ curve according to the user that described EQ adjusts instruction.When need adjusting the EQ curve, the user can select one of them or certain several frequencies in EQ curve abscissa as selected the frequency at 50hz place, and this selected frequency is called center frequency point fc; Then as required centered by selected frequency upwards (increasing the volume at selected frequency place) or downwards (reducing the volume at selected frequency place) pull the EQ curve manipulation; With or carry out as required and zoom in or out the EQ curve manipulation; Intelligent terminal generates corresponding EQ adjustment instruction according to user's the operation to the EQ curve, and then adjusts instruction according to generated EQ the EQ curve is adjusted, and then calculates corresponding frequency values, yield value and the Q value of each frequency in the EQ curve after adjusting.
Wherein, in the present embodiment, the yield value of a certain frequency of EQ curve represents the height change value of EQ curve, can centered by selected frequency, pull up or down by the user EQ curve to realize.
In addition, in the present embodiment, the original EQ curve of setting up in advance is made as acquiescence EQ curve, and acquiescence Q value corresponding to this acquiescence EQ curve is " 1 ".When the user zooms in or out operation to the EQ curve, intelligent terminal can according to described zoom in or out the operation Q value is adjusted.If the user EQ curve is zoomed in or out to operation before Q value for default value " 1 ", after the user carries out reduction operation to the EQ curve, intelligent terminal is adjusted to the Q value next grade, makes the Q value be adjusted to " 2 ".If continue, the EQ curve is carried out to reduction operation, intelligent terminal continues the Q value to be adjusted to next shelves, makes the Q value be adjusted to " 3 "; Because the Q value is maximum Q value for " 3 ", the EQ curve can't continue to dwindle, and now intelligent terminal can produce information, informs that the current Q value of user has reached maximum, and the EQ curve can not dwindle again.
In like manner, when the user carries out amplifieroperation to the EQ curve, intelligent terminal is adjusted to upper one grade by the Q value, makes the Q value be adjusted to " 0.5 "; Because the Q value is that " 0.5 " is minimum Q value, the EQ curve can't continue to amplify, and now intelligent terminal can produce information, informs that the current Q value of user has reached minimum value, and the EQ curve can not amplify again.
Step S102, EQ transfer of data that each frequency is corresponding, to voice frequency terminal, so that voice frequency terminal is described EQ data by the original EQ Data Update of self, realize the audio adjustment of output audio.
The EQ curve of setting up due to the present embodiment includes 30 frequencies, the EQ data that each frequency is corresponding include: frequency values, yield value and Q value, so intelligent terminal EQ data that 30 frequencies is corresponding transfer to voice frequency terminal in form (the 30 groups of EQ data) mode of array.
Described voice frequency terminal comprises MCU, RAM, dsp chip, wherein, intelligent terminal by described EQ transfer of data in described MCU, after described MCU receives described EQ data, by the EQ data storing in described RAM, and, to described dsp chip initialization process (deleting original EQ data in dsp chip), then writing in described dsp chip from the EQ data of intelligent terminal, thereby the audio of the follow-up output audio of change voice frequency terminal.
In the present embodiment, described intelligent terminal specifically adopt USB wire transmission mode, Bluetooth wireless transmission mode or Wi-Fi wireless transmission method by described EQ transfer of data to voice frequency terminal.
Further, provide another embodiment of the present invention, the present embodiment is improved on the basis of above-described embodiment, and improvements are, also comprise following processing before above-mentioned steps S102: receive EQ and adjust the confirmation instruction.The described EQ transfer of data that described each frequency is corresponding specifically comprises to voice frequency terminal: adjust and confirm instruction according to described EQ, the EQ transfer of data that described each frequency is corresponding is to voice frequency terminal.Be that intelligent terminal need be adjusted according to the EQ of user's input the operation of the confirmation instruction triggers execution EQ transfer of data that described each frequency is corresponding to voice frequency terminal.Be after intelligent terminal adjusts and calculate to the EQ curve EQ data that in the EQ curve after adjusting, each frequency is corresponding according to the adjustment instruction of user's input, also need to judge whether to receive that EQ that the user inputs adjusts confirms instruction, if receive this EQ adjust confirm instruction by described each frequency corresponding EQ transfer of data to voice frequency terminal; If do not receive, this EQ adjusts confirms direct process ends of instruction.Adopt this mode can reduce the misoperation that EQ adjusts.
The voice frequency regulating method that the present embodiment provides, receive EQ by intelligent terminal and adjust instruction, according to this EQ, adjusts the EQ curve that the instruction adjustment is set up in advance, and calculate EQ data corresponding to each frequency in the EQ curve after adjusting; The EQ transfer of data that each frequency is corresponding is to voice frequency terminal, the mode that voice frequency terminal is described EQ data by the original EQ Data Update of self, make different user like and realize freely adjusting the EQ curve according to self, thereby control the audio frequency that voice frequency terminal is exported best audio, make different user like to enjoy according to self and feel perfect audio audio frequency, improved user's experience effect.
Referring to Fig. 3, Fig. 4 and Fig. 5, a kind of audio frequency regulating system 100 1 embodiment of the present invention are proposed, comprise intelligent terminal 110 and voice frequency terminal 120.Described intelligent terminal 110 comprises: curve is set up module 111, curve adjusting module 112 and data transmission module 113.Wherein, described curve is set up module 111, for setting up the EQ curve.Described curve adjusting module 112, adjust instruction for receiving EQ, adjusts instruction according to this EQ and adjust described EQ curve, and calculate EQ data corresponding to each frequency in the EQ curve after adjusting.Described data transmission module 113, to voice frequency terminal, so that voice frequency terminal is received EQ data by the original EQ Data Update of self, realize the audio adjustment of output audio for the EQ transfer of data that each frequency is corresponding.Described voice frequency terminal 120 comprises: data reception module 121 and data update module 122.Described data reception module 121, for receiving the EQ data that send from described data transmission module.Described data update module, be received EQ data for the original EQ Data Update by self, realizes the audio adjustment of output audio.
Referring to Fig. 2, in the present embodiment, described curve is set up the EQ curve that module 110 sets up and be take frequency values as abscissa, and the frequency values scope is 20hz to 20khz; Decibel value is ordinate, and the decibel value scope is-and 10db is to+10db, and this decibel value scope is the maximum magnitude value that chip can bear.
In the present embodiment, the frequency values that described EQ curve is corresponding is divided into multifrequency point from low to high successively, and the k that the frequency values that each frequency is corresponding is the frequency values that its last frequency is corresponding times, wherein, 1<k≤2; Preferably, described
be below to take k=1.26 as example, the division methods of intermediate-frequeney point of the present invention is described, its concrete division methods is as follows:
If be 10 octaves altogether from 20hz to 20khz, be divided into 30 frequencies;
Each octave is carried out the geometric ratio trisection,
If take 20hz as initial frequency f0, f1=k*f0, f2=f1*k=k* (k*f0)=k*k*f0 ..., f30=f29*k=20.03khz;
Work as k=1.26, on the abscissa of described EQ curve, 30 corresponding frequencies are followed successively by: 25hz, 31.5hz, 40hz, 50hz ..., 12.5khz, 15khz, 20khz.
Above frequency is referred to as the set of center frequency point fc, and the center frequency point that can select for the user is 30.
In the present embodiment, yield value (Gain) represents the height of EQ curve; The scope of the ordinate of described EQ curve is-10db is to+10db, if the value-10db of EQ curve ordinate bottommost is set as to " 0 "; Middle value 0db is set as " 10 "; Value+the 10db of top is set as " 20 ";
Suppose current frequency, after overregulating, the value y of ordinate changes to y2=16 by the y1=10 of acquiescence,
Yield value (Gain)=y2 – y1=6db;
When adjusting the value that reduces certain frequency, the value y of ordinate changes to y2=1 by the y1=10 of acquiescence,
Yield value (Gain)=y2 – y1=-9db; The rest may be inferred.
In the present embodiment, the Q value is determined the width of EQ curve; The present embodiment is in order to simplify the calculating of Q value, and the default value of establishing the Q value is " 1 ", and establishes 4 grades of Q values and freely select for the user; These 4 grades of Q values are made as respectively: Q1=0.5, Q2=1, Q3=2, Q4=3, and Q2=1 is default value; Wherein, the Q value is larger, and the width of EQ curve is narrower; Otherwise the Q value is less, the width of EQ curve is wider.
In the present embodiment, the EQ data that in described EQ curve, each frequency is corresponding comprise: frequency values, yield value and Q value.Wherein, the pass between the frequency values that each frequency is corresponding in described EQ curve, yield value, Q value is:
Y_Gain=a*Q*(fre–fc)*(fre–fc)+b*Fc_gain；
Wherein, Y_Gain is represented as the yield value that frequency is the fre place;
Fc_gain represents the yield value that center frequency point is the fc place, and center frequency point fc representative of consumer is selected the frequency changed;
Q represents the Q value, and this Q value default value is " 1 ";
Fre and fc all represent value of frequency point, and span is 20hz – 20khz;
A=1 or-1, a determines the opening direction of EQ curve, and " 1 " is represented as opening upwards, and Open Side Down in " 1 " representative;
B=1 or-1, depend on that gain G ain's is positive and negative.(api function that the user selects to change that frequency and can be provided by cell phone system obtains),
In the present embodiment, it is that intelligent terminal 110 is adjusted and generated the EQ curve according to the user that described EQ adjusts instruction.When need adjusting the EQ curve, the user can select one of them or certain several frequencies in EQ curve abscissa as selected the frequency at 50hz place, and this selected frequency is called center frequency point fc; Then as required centered by selected frequency upwards (increasing the volume at selected frequency place) or downwards (reducing the volume at selected frequency place) pull the EQ curve manipulation; With or carry out as required and zoom in or out the EQ curve manipulation; Intelligent terminal 110 generates corresponding EQ adjustment instruction according to user's the operation to the EQ curve, and then adjust instruction according to generated EQ the EQ curve is adjusted, then calculate corresponding frequency values, yield value and the Q value of each frequency in the EQ curve after adjusting.
Wherein, in the present embodiment, the yield value of a certain frequency of EQ curve represents the height change value of EQ curve, can centered by selected frequency, pull up or down by the user EQ curve to realize.
In addition, in the present embodiment, the original EQ curve of setting up in advance is made as acquiescence EQ curve, and acquiescence Q value corresponding to this acquiescence EQ curve is " 1 ".When the user zooms in or out operation to the EQ curve, intelligent terminal 100 can zoom in or out operation the Q value is adjusted according to described.If the user EQ curve is zoomed in or out to operation before Q value for default value " 1 ", after the user carries out reduction operation to the EQ curve, 100 of intelligent terminals are adjusted to next grade by the Q value, make the Q value be adjusted to " 2 ".If continue, the EQ curve is carried out to reduction operation, 100 of intelligent terminals continue to be adjusted to next shelves by the Q value, make the Q value be adjusted to " 3 "; Because the Q value is maximum Q value for " 3 ", the EQ curve can't continue to dwindle, and now intelligent terminal 100 can produce information, informs that the current Q value of user has reached maximum, and the EQ curve can not dwindle again.
In like manner, when the user carries out amplifieroperation to the EQ curve, intelligent terminal 100 is adjusted to upper one grade by the Q value, makes the Q value be adjusted to " 0.5 "; Because the Q value is that " 0.5 " is minimum Q value, the EQ curve can't continue to amplify, and now intelligent terminal 100 can produce information, informs that the current Q value of user has reached minimum value, and the EQ curve can not amplify again.
The EQ curve of setting up due to the present embodiment includes 30 frequencies, the EQ data that each frequency is corresponding include: frequency values, yield value and Q value, so the EQ data 30 frequencies is corresponding by data transmission module 113 of intelligent terminal 110 transfer to voice frequency terminal 120 in form (the 30 groups of EQ data) mode of array.
Described voice frequency terminal 120 comprises MCU, RAM, dsp chip, wherein, intelligent terminal 110 by data transmission module 111 by described EQ transfer of data to described MCU, after described MCU receives described EQ data, by the EQ data storing in described RAM, and to described dsp chip initialization process (deleting original EQ data in dsp chip), then will from the EQ data of intelligent terminal 110, write in described dsp chip, thereby change the audio of voice frequency terminal 120 outputs, realize the audio adjustment of voice frequency terminal 120 output audios.
In the present embodiment, described data transmission module 113 is concrete adopt USB wire transmission mode, Bluetooth wireless transmission mode or Wi-Fi wireless transmission method by described EQ transfer of data to voice frequency terminal 120.
Further, another embodiment of audio frequency regulating system 100 of the present invention is provided, the present embodiment is improved on the basis of above-described embodiment, improvements are: described data transmission module 113, specifically also for receiving EQ, adjust the confirmation instruction, adjust and confirm instruction according to described EQ, the EQ transfer of data that each frequency is corresponding is to voice frequency terminal 120.Be that described data transmission module 113 need be adjusted according to the EQ of user's input the operation of the confirmation instruction triggers execution EQ transfer of data that described each frequency is corresponding to voice frequency terminal 120.After described curve adjusting module 112 adjusts and calculates to the EQ curve EQ data that in the EQ curve after adjusting, each frequency is corresponding according to the adjustment instruction of user's input, described data transmission module 113 also needs to judge whether to receive that EQ that the user inputs adjusts confirms instruction, if receive this EQ adjust confirm instruction by described each frequency corresponding EQ transfer of data to voice frequency terminal 120; If do not receive, this EQ adjusts confirms direct process ends of instruction.Adopt this mode can reduce the misoperation that EQ adjusts.
In above-described embodiment, the function that described data reception module 121 has can be by the MCU realization of voice frequency terminal 120, and the function that described data update module 122 has can be realized by MCU and the dsp chip of voice frequency terminal 120.In the present embodiment, when described voice frequency terminal 120 is received the EQ data from intelligent terminal 110 in the audio plays process, also need the audio frequency of current broadcasting is carried out to quiet setting, be intelligent terminal 110 by described EQ transfer of data to described MCU, described MCU receives the audio frequency to current broadcasting after described EQ data and carries out quiet setting, then by the EQ data storing in described RAM, and to described dsp chip initialization process (deleting original EQ data in dsp chip), to from the EQ data of intelligent terminal 110, write in described dsp chip, when whole EQ data all write the quiet setting that dsp chip is removed the audio frequency of broadcasting, realize adjusting the audio of voice frequency terminal 120 follow-up outputs.
The audio frequency regulating system 100 that the present embodiment provides, receive EQ by intelligent terminal 110 and adjust instruction, according to this EQ, adjusts the EQ curve that the instruction adjustment is set up in advance, and calculate EQ data corresponding to each frequency in the EQ curve after adjusting; The EQ transfer of data that each frequency is corresponding is to voice frequency terminal 120, the mode that voice frequency terminal 120 is described EQ data by the original EQ Data Update of self, make different user like and realize freely adjusting the EQ curve according to self, thereby control the audio frequency of the best audio of voice frequency terminal 120 output, make different user like to enjoy according to self and feel perfect audio audio frequency, improved user's experience effect.
Should be understood that; these are only the preferred embodiments of the present invention; can not therefore limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes specification 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 (10)
1. a voice frequency regulating method, is characterized in that, comprising:
Receive EQ and adjust instruction, according to this EQ, adjust the EQ curve that the instruction adjustment is set up in advance, and calculate EQ data corresponding to each frequency in the EQ curve after adjusting;
The EQ transfer of data that each frequency is corresponding is to voice frequency terminal, so that voice frequency terminal is received EQ data by the original EQ Data Update of self, realizes the audio adjustment of output audio;
Wherein, described EQ curve be take frequency values as abscissa, and decibel value is ordinate; The frequency values that described EQ curve is corresponding is divided into multifrequency point from low to high successively, and the K that the frequency values that each frequency is corresponding is the frequency values that its last frequency is corresponding times, wherein, 1<K≤2;
The corresponding EQ data of described each frequency comprise: frequency values, yield value and Q value.
2. voice frequency regulating method according to claim 1, is characterized in that, the pass between the frequency values that in described EQ curve, each frequency is corresponding, yield value, Q value is:
Y_Gain=a*Q*(fre–fc)*(fre–fc)+b*Fc_gain；
Wherein, Y_Gain is represented as the yield value that frequency is the fre place;
Fc_gain represents the yield value that center frequency point is the fc place, and center frequency point fc representative of consumer is selected the frequency changed;
Q represents the Q value, and this Q value default value is " 1 ";
Fre and fc all represent value of frequency point;
A=1 or-1, a determines the opening direction of EQ curve, and " 1 " is represented as opening upwards, and Open Side Down in " 1 " representative;
B=1 or-1, depend on that gain G ain's is positive and negative.
3. voice frequency regulating method according to claim 1 and 2, is characterized in that, the described EQ transfer of data that each frequency is corresponding also comprises to before voice frequency terminal:
Receive EQ and adjust the confirmation instruction;
The described EQ transfer of data that each frequency is corresponding is specially to voice frequency terminal:
Adjust and confirm instruction according to described EQ, the EQ transfer of data that each frequency is corresponding is to voice frequency terminal.
4. voice frequency regulating method according to claim 3, it is characterized in that, described EQ transfer of data is specially to voice frequency terminal: adopt USB wire transmission mode, Bluetooth wireless transmission mode or Wi-Fi wireless transmission method by described EQ transfer of data to voice frequency terminal.
5. voice frequency regulating method according to claim 3, is characterized in that, the frequency values scope that the abscissa of described EQ curve is corresponding is 20hz to 20khz, and the decibel value scope that ordinate is corresponding is-and 10db is to+10db.
6. an audio frequency regulating system, is characterized in that, comprises intelligent terminal and voice frequency terminal, and wherein said intelligent terminal comprises:
Curve is set up module, for setting up the EQ curve;
The curve adjusting module, adjust instruction for receiving EQ, adjusts instruction according to this EQ and adjust described EQ curve, and calculate EQ data corresponding to each frequency in the EQ curve after adjusting;
Data transmission module, to voice frequency terminal, so that voice frequency terminal is received EQ data by the original EQ Data Update of self, realize the audio adjustment of output audio for the EQ transfer of data that each frequency is corresponding;
Described EQ curve be take frequency values as abscissa, and decibel value is ordinate; The frequency values that described EQ curve is corresponding is divided into multifrequency point from low to high successively, and the K that the frequency values that each frequency is corresponding is the frequency values that its last frequency is corresponding times, wherein, 1<K≤2; The corresponding EQ data of described each frequency comprise: frequency values, yield value and Q value;
Described voice frequency terminal comprises:
Data reception module, for receiving the EQ data that send from described data transmission module;
Data update module, be received EQ data for the original EQ Data Update by self, realizes the audio adjustment of output audio.
7. audio frequency regulating system according to claim 6, is characterized in that, the pass between the frequency values that in described EQ curve, each frequency is corresponding, yield value, Q value is:
Y_Gain=a*Q*(fre–fc)*(fre–fc)+b*Fc_gain；
Wherein, Y_Gain is represented as the yield value that frequency is the fre place;
Fc_gain represents the yield value that center frequency point is the fc place, and center frequency point fc representative of consumer is selected the frequency changed;
Q represents the Q value, and this Q value default value is " 1 ";
Fre and fc all represent value of frequency point;
A=1 or-1, a determines the opening direction of EQ curve, and " 1 " is represented as opening upwards, and Open Side Down in " 1 " representative;
B=1 or-1, depend on that gain G ain's is positive and negative.
8. according to the described audio frequency regulating system of claim 6 or 7, it is characterized in that,
Described data transmission module, specifically also adjust the confirmation instruction for receiving EQ, according to described EQ, adjusts and confirm instruction, and the EQ transfer of data that each frequency is corresponding is to voice frequency terminal.
9. audio frequency regulating system according to claim 8, is characterized in that,
Described data transmission module, specifically adopt USB wire transmission mode, Bluetooth wireless transmission mode or Wi-Fi wireless transmission method by described EQ transfer of data to voice frequency terminal.
10. audio frequency regulating system according to claim 8, is characterized in that,
The frequency values scope that the abscissa of described EQ curve is corresponding is 20hz to 20khz, and the decibel value scope that ordinate is corresponding is-and 10db is to+10db.
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