CN106911981B - The system and method for small sound chamber audio effect processing - Google Patents
The system and method for small sound chamber audio effect processing Download PDFInfo
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- CN106911981B CN106911981B CN201710141100.XA CN201710141100A CN106911981B CN 106911981 B CN106911981 B CN 106911981B CN 201710141100 A CN201710141100 A CN 201710141100A CN 106911981 B CN106911981 B CN 106911981B
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- 230000000694 effects Effects 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000005070 sampling Methods 0.000 claims abstract description 19
- 230000005236 sound signal Effects 0.000 description 12
- 230000003321 amplification Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000009131 signaling function Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
- H04R2430/03—Synergistic effects of band splitting and sub-band processing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/15—Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops
Abstract
The present invention relates to audio effect processing fields, disclose a kind of system and method for small sound chamber audio effect processing, solve the problems, such as that audio consistency is poor caused by being thinned because of small sound chamber.System of the invention includes SOC module and power amplifier module, and the SOC module includes MCU and DSP audio module, meanwhile, it further include sampling feedback circuit, sampling feedback circuit is connect with DSP audio module, power amplifier module respectively；Method sums up are as follows: a plurality of dynamic gain curve is saved in DSP audio module, after sampling feedback circuit feeds back the realtime power of the output signal of power amplifier module into DSP audio module, carry out frequency range division of the DSP audio module to output signal, and each frequency range part of the output signal of DSP audio module is controlled based on realtime power and each frequency range corresponding dynamic gain curve.The present invention is suitable for small sound chamber audio effect processing.
Description
Technical field
The present invention relates to audio effect processing field, in particular to the system and method for small sound chamber audio effect processing.
Background technique
The slimming of color TV trade LCD TV and ultrathin typeization have been increasingly becoming product mainstream, thus to color TV trade
Loudspeaker requirements its slim bodies, occupy little space.Traditional TV sound effect processing system is as shown in Fig. 1, and audio signal is defeated
The DSP audio module entered into SOC module carries out demodulation process, is then output to digital power amplifier module or simulation by I2S
Power amplifier module does signal amplification and audio effect processing, then by the output of the sound chamber of specified impedance and rated power, realizes TV
Audio output.Traditional SOC module, which is output to power amplifier module and the audio curve of sound chamber, to be debugged according to some small sound chamber sample
One specific audio curve such as attached drawing 2.Because of the slimming of current small sound chamber, the differences such as the material used, manufacturing process,
It is had differences between the voice coil parameter of the small sound chamber of same specification, causes same set of EQ parameter role on the small sound chamber of specification of the same race
Audio differs greatly.
Summary of the invention
The technical problem to be solved by the present invention is providing a kind of system and method for small sound chamber audio effect processing, solve because
The problem of audio consistency difference caused by small sound chamber slimming.
To solve the above problems, the technical solution adopted by the present invention is that: the system of small sound chamber audio effect processing, including SOC mould
Block, power amplifier module and sampling feedback circuit, the SOC module include MCU and DSP audio module, sampling feedback circuit difference
It is connect with DSP audio module, power amplifier module；Wherein, sampling feedback circuit is used for the real-time function of the output signal of power amplifier module
Rate is fed back into DSP audio module；A plurality of dynamic gain curve is preserved in DSP audio module, wherein a plurality of dynamic gain is bent
Line is used to correspond to the control of different frequency range part in the output signal of DSP audio module；
After sampling feedback circuit feeds back the realtime power of the output signal of power amplifier module into DSP audio module, DSP
Carry out frequency range division of the audio module to output signal, and based on realtime power and the corresponding dynamic gain curve point of each frequency range
Each frequency range part of the other output signal to DSP audio module controls.
Further, 3 dynamic gain curves are preserved in DSP audio module, 3 dynamic gain curves respectively correspond
1KHz or less, 1KHz-10KHz, 10KHz are in the output signal of DSP audio module with the control of super band part.
Further, 3 dynamic gain curves limit peak power output.
The method of small sound chamber audio effect processing, comprising the following steps:
A plurality of dynamic gain curve is saved in DSP audio module, wherein a plurality of dynamic gain curve is for corresponding to DSP
The control of different frequency range part in the output signal of audio module；
After sampling feedback circuit feeds back the realtime power of the output signal of power amplifier module into DSP audio module, DSP
Carry out frequency range division of the audio module to output signal, and based on realtime power and the corresponding dynamic gain curve point of each frequency range
Each frequency range part of the other output signal to DSP audio module controls.
Further, 3 dynamic gain curves are saved in DSP audio module, 3 dynamic gain curves respectively correspond
1KHz or less, 1KHz-10KHz, 10KHz are in the output signal of DSP audio module with the control of super band part.
Further, 3 dynamic gain curves limit peak power output.
The beneficial effects of the present invention are: the present invention can be adaptive to adjust audio output song according to the frequency range of audio signal
Line solves the problems, such as that audio consistency is poor caused by being thinned because of small sound chamber, is the slimming and ultrathin typeization of color TV
It provides safeguard.
Detailed description of the invention
Fig. 1 is the TV sound effect processing system figure of traditional approach；
Fig. 2 is the dynamic gain curve graph of the TV audio effect processing of traditional approach；
Fig. 3 is TV sound effect processing system figure of the invention；
Fig. 4 is the dynamic gain curve graph of TV audio effect processing of the invention.
Specific embodiment
Embodiment provides a kind of system and method for small sound chamber audio effect processing, as shown in figure 3, system includes SOC module, function
Amplification module and sampling feedback circuit, SOC module include MCU and DSP audio module, sampling feedback circuit respectively with DSP audio
Module, power amplifier module connection.Wherein, power amplifier module can be digital power amplifier module or analog amplifier module；Sampling feedback circuit
For feeding back the realtime power of the output signal of power amplifier module into DSP audio module；3 are preserved in DSP audio module
Dynamic gain curve, 3 dynamic gain curves respectively correspond 1KHz or less, 1KHz- in the output signal of DSP audio module
10KHz, 10KHz are with the control of super band part.
After sampling feedback circuit feeds back the realtime power of the output signal of power amplifier module into DSP audio module, DSP
Carry out frequency range division of the audio module to output signal, and based on realtime power and the corresponding dynamic gain curve point of each frequency range
Each frequency range part of the other output signal to DSP audio module controls.
The specific processing method of embodiment is as follows:
1, MCU module receives the audio signal of input, and DSP audio module carries out solution and mediate according to preset EQ parameter
Digital power amplifier or analog amplifier module are output to after reason.
2, power amplifier module carries out signal amplification and audio effect processing to the signal received, and output voltage signal drives small sound
Chamber.
3, when audio signal is input to loudspeaker, electric signal drives voice coil vibration, because the audio signal of different frequency is made
For variant between the impedance of voice coil, be embodied in it is different in the realtime power P on different voice coils with set EQ parameter role, therefore
It needs to adjust DSP audio module curve of output again with the relationship between audio signal frequency according to power P.
Sampling feedback circuit samples the realtime power P acted on small sound chamber, and feeds back and arrive DSP audio effect processing mould
Block, DSP audio module (move the adaptive preset power P of DSP audio module of power P that sampling obtains with EQ gain curve
State gain curve).Because power P is related with the frequency height of audio signal, as shown in figure 4, embodiment is according to having preset three
Dynamic gain curve carries out different controls:
L 1. (low frequency) curve: the low frequency part (1KHz or less) in processing audio signal, between this frequency range, DSP audio
Module exports after carrying out gain adjustment according to L gain curve；
M 2. (intermediate frequency) curve: the intermediate-frequency section (1KHz-10KHz) in processing audio signal, between this frequency range, DSP sound
Effect module exports after carrying out gain adjustment according to M gain curve；
H 3. (high frequency) curve: the high frequency section (10KHz or more) in processing audio signal, between this frequency range, DSP sound
Effect module exports after carrying out gain adjustment according to H gain curve；
From figure 3, it can be seen that embodiment limits peak power output Pmax to three curves, maximum thus can be limited
Output gain plays the role of the small sound chamber of protection.
5, DSP audio module adjusts separately each frequency range part of audio signal according to three dynamic gain curves, again
Synthesis exports, thus the adjustable realtime power difference because in audio signal on the signal function Yu little Yin chamber of different frequency
Larger problem keeps voice coil amplitude consistent, and the audio for being embodied in its output is consistent, small sound chamber one caused by finally solving because of voice coil
The problem of cause property difference, plays the effect of enhancing audio effect processing.
The foregoing describe basic principle of the invention and main feature, the description of specification only illustrates original of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.
Claims (6)
1. the system of small sound chamber audio effect processing, including SOC module and power amplifier module, the SOC module includes MCU and DSP audio
Module, which is characterized in that further include sampling feedback circuit, sampling feedback circuit connects with DSP audio module, power amplifier module respectively
It connects；
Sampling feedback circuit is used to feed back the realtime power of the output signal of power amplifier module into DSP audio module；
A plurality of dynamic gain curve is preserved in DSP audio module, wherein a plurality of dynamic gain curve is for corresponding to DSP audio
The control of different frequency range part in the output signal of module；
After sampling feedback circuit feeds back the realtime power of the output signal of power amplifier module into DSP audio module, DSP audio
Carry out frequency range division of the module to output signal, and it is right respectively based on realtime power and the corresponding dynamic gain curve of each frequency range
Each frequency range part of the output signal of DSP audio module is controlled.
2. the system of small sound chamber audio effect processing according to claim 1, which is characterized in that preserve 3 in DSP audio module
Dynamic gain curve, 3 dynamic gain curves respectively correspond 1KHz or less, 1KHz- in the output signal of DSP audio module
10KHz, 10KHz are with the control of super band part.
3. the system of small sound chamber audio effect processing according to claim 2, which is characterized in that 3 dynamic gain curves limit
Peak power output is made.
4. the method for small sound chamber audio effect processing, which comprises the following steps:
A plurality of dynamic gain curve is saved in DSP audio module, wherein a plurality of dynamic gain curve is for corresponding to DSP audio
The control of different frequency range part in the output signal of module；
After sampling feedback circuit feeds back the realtime power of the output signal of power amplifier module into DSP audio module, DSP audio
Carry out frequency range division of the module to output signal, and it is right respectively based on realtime power and the corresponding dynamic gain curve of each frequency range
Each frequency range part of the output signal of DSP audio module is controlled.
5. the method for small sound chamber audio effect processing according to claim 4, which is characterized in that save 3 in DSP audio module
Dynamic gain curve, 3 dynamic gain curves respectively correspond 1KHz or less, 1KHz- in the output signal of DSP audio module
10KHz, 10KHz are with the control of super band part.
6. the method for small sound chamber audio effect processing according to claim 5, which is characterized in that 3 dynamic gain curves limit
Peak power output is made.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710141100.XA CN106911981B (en) | 2017-03-10 | 2017-03-10 | The system and method for small sound chamber audio effect processing |
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| CN201710141100.XA CN106911981B (en) | 2017-03-10 | 2017-03-10 | The system and method for small sound chamber audio effect processing |
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| CN106911981B true CN106911981B (en) | 2019-05-10 |
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| CN107404625B (en) * | 2017-07-18 | 2020-10-16 | 海信视像科技股份有限公司 | Sound effect processing method and device of terminal |
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| CN1798452A (en) * | 2004-12-28 | 2006-07-05 | 三星电子株式会社 | Method of compensating audio frequency response characteristics in real-time and a sound system using the same |
| CN202587111U (en) * | 2012-05-17 | 2012-12-05 | 厦门毅想通信研发中心有限公司 | Audio signal processing system and mobile terminal employing audio signal processing system |
| CN103473005A (en) * | 2013-09-29 | 2013-12-25 | 深圳Tcl新技术有限公司 | Method and device for performing sound effect control on played audio frequency |
| CN104661153A (en) * | 2014-12-31 | 2015-05-27 | 歌尔声学股份有限公司 | Earphone sound effect compensation method and device as well as earphone |
| CN105808204A (en) * | 2016-03-31 | 2016-07-27 | 联想(北京)有限公司 | Sound effect adjusting method and electronic equipment |
-
2017
- 2017-03-10 CN CN201710141100.XA patent/CN106911981B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1798452A (en) * | 2004-12-28 | 2006-07-05 | 三星电子株式会社 | Method of compensating audio frequency response characteristics in real-time and a sound system using the same |
| CN202587111U (en) * | 2012-05-17 | 2012-12-05 | 厦门毅想通信研发中心有限公司 | Audio signal processing system and mobile terminal employing audio signal processing system |
| CN103473005A (en) * | 2013-09-29 | 2013-12-25 | 深圳Tcl新技术有限公司 | Method and device for performing sound effect control on played audio frequency |
| CN104661153A (en) * | 2014-12-31 | 2015-05-27 | 歌尔声学股份有限公司 | Earphone sound effect compensation method and device as well as earphone |
| CN105808204A (en) * | 2016-03-31 | 2016-07-27 | 联想(北京)有限公司 | Sound effect adjusting method and electronic equipment |
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