CN101155439A - Method for intensifying sound effect processing function of Bluetooth stereo device - Google Patents
Method for intensifying sound effect processing function of Bluetooth stereo device Download PDFInfo
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- CN101155439A CN101155439A CNA2006101407148A CN200610140714A CN101155439A CN 101155439 A CN101155439 A CN 101155439A CN A2006101407148 A CNA2006101407148 A CN A2006101407148A CN 200610140714 A CN200610140714 A CN 200610140714A CN 101155439 A CN101155439 A CN 101155439A
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Abstract
A method for adding sound effect process function of a Bluetooth stereo device is provided in the present invention, adding a digital signal process technology to the Bluetooth stereo device and adding a sound effect process module for processing stereo sound source series flow, adding special sound effect series flow into the form of the sound source series flow after subband coding (Subband coding, SBC) decoding received by the Bluetooth stereo device, sound effect process function containing super bass process function, sound effect simulating various sound fields and process function of the dynamic equalizer, wherein the super bass process bases on using human ear lost basic frequency effect, and the simulating various sound fields bases on the rebound of sound in space, sound positioning process technology and sound effect simulating technology etc., leading the stereo sound effect to be perfect while process sound effect process.
Description
Technical field
The present invention relates to digital signal processing technique field, particularly relate to a kind of Bluetooth stereo device that is used for, can increase the method for audio processing capacity of the processing capacity of the audio of supper bass processing capacity, the various sound fields of emulation and dynamic equalizer.
Background technology
Along with science and technology develops gradually, various electronic installations real-time and easily constantly are developed because of the needs that meet people's life, with demands such as satisfying simply, conveniently use and be portable, wherein Radio Transmission Technology has significant progress especially, more convenient on transfer of data, especially the most popular with blue tooth wireless technology, devices such as mobile phone, computer, keyboard and mouse and earphone all can adopt the Bluetooth wireless transmission technology, no matter allow the user do things or walk about and all can in scope, listen to music, do not have again and be transmitted the puzzlement that line hinders as the blue teeth wireless earphone.
The internal structure of traditional Bluetooth stereo device as shown in Figure 1, no matter wherein the function of microprocessor 10 ' is on the loudspeaker or on the earphone, the function that audio is handled all a little less than, for example during playing back music, the audio of supper bass tends to occur noise, supper bass perfectly can't be presented; When bass too loudly the time can distorsion, or high pitch place overtone make very little sound point thin be difficult to pleasant, needing to increase audio and dynamic equalizer (the Dynamic Equalizer that supper bass is handled, simulated various sound fields, the audio of processing capacity D-EQ) is handled and is coordinated, and comprises that dynamic equalizer, graphic equalizer and equalization parameter device wait accurate control.
Therefore, the present invention is directed to several shortcomings of above-mentioned prior art, propose a kind of method that increases the audio processing capacity of Bluetooth stereo device, effectively to overcome the problems referred to above.
Summary of the invention
Main purpose of the present invention provides a kind of method that increases the audio processing capacity of Bluetooth stereo device, it utilizes an audio processing module to add the special sound effect crossfire and receives the source of sound crossfire through frequency division coding (Subband Coding in Bluetooth stereo device, SBC) in the decoded form, make the audio that plays out better.
Another object of the present invention provides a kind of method that increases the audio processing capacity of Bluetooth stereo device, and it can strengthen the audio processing capacity of the processing capacity of the audio processing capacity of supper bass processing capacity, the various sound fields of emulation and dynamic equalizer.
A further object of the present invention provides a kind of method that increases the audio processing capacity of Bluetooth stereo device, and its yield value that can adjust graphic equalizer and equalization parameter device automatically becomes big or diminishes.
For reaching above-mentioned purpose, the invention provides a kind of method that increases the audio processing capacity of Bluetooth stereo device, it utilizes a Bluetooth stereo device to receive a source of sound crossfire through frequency division coding (SubbandCoding, SBC) decoded form carries out audio and strengthens processing, in Bluetooth stereo device, comprise an audio processing module, it selects to add at least one special sound effect crossfire according to the characteristic of stereo sound effect crossfire in the stereo sound effect crossfire, form a new stereo sound effect crossfire; And Bluetooth stereo device changes into new stereo sound effect crossfire after the analog signal and broadcasts.Wherein, the special sound effect crossfire can increase the processing capacity of the audio of supper bass processing capacity, the various sound fields of emulation of this stereo sound effect crossfire and graphic equalizer, dynamic equalizer, equalization parameter device, make new stereo sound effect crossfire more perfect, the audio of broadcast is more perfect.
Compared with prior art, the present invention has the following advantages:
The invention provides a kind of method that increases the audio processing capacity of Bluetooth stereo device, according to a source of sound crossfire that Bluetooth stereo device received through frequency division coding (Subband Coding, SBC) characteristic of decoded form, utilize an audio processing module in the stereo sound effect crossfire, to add at least one special sound effect crossfire, supper bass is handled and the deficiency of sound field simulation to remedy, more can increase the processing capacity of sound field emulation, graphic equalizer, equalization parameter device and dynamic equalizer, no matter allow user's volume increase or reduce all can hear the optimum efficiency of setting.
Description of drawings
Fig. 1 is the structure chart of Bluetooth stereo device in the prior art;
Fig. 2 is for using the structure chart of Bluetooth stereo device of the present invention;
Fig. 3 passes out to the flow chart that enters user's ear for sound among the present invention from source of sound.
The figure number explanation
10 ' microprocessor (prior art)
10 microprocessors
12 audio processing modules
Embodiment
Below the effect that should be easier to understand purpose of the present invention, technology contents, characteristics and be reached is described in detail by specific embodiment.
The invention provides a kind of method that increases the audio processing capacity of Bluetooth stereo device, it can compensate the deficiency of supper bass, the audio processing capacity of the various sound fields of simulation, and can adjust gain and parameter in the equalizer (EQ) automatically.Because the kind of Bluetooth stereo device is in extensive range, will be the method that example explanation the present invention increases the audio processing capacity below with the Bluetooth stereo earphone.
Fig. 2 is for using the structure chart of Bluetooth stereo earphone intraware of the present invention, the difference of itself and Fig. 1 be in, more comprise an audio processing module 12 in the microprocessor 10 of the Bluetooth stereo earphone of Fig. 2, in order to handle method provided by the present invention.
Sound is from sending the source to being received and export by the Bluetooth stereo earphone, its flow process as shown in Figure 3, sound is encoded through step S10 earlier at place, sound source, and after selecting whether to encrypt, as described in step S12 to S16, by audio distribution formula host-host protocol (AVDTP) and logic link control and adaptation layer protocol (Logical link control and adaptation layer protocol, L2CAP) with the source of sound crossfire through frequency division coding (Subband Coding, SBC) form behind the coding is transferred in Bluetooth stereo earphone or the Bluetooth stereo device, and have audio distribution formula host-host protocol and logic link control and adaptation layer protocol two communications protocol in Bluetooth stereo earphone or the Bluetooth stereo device equally, to receive from having the data streaming that identical communications protocol is sent, as step S18 and S20.Receive the form of source of sound crossfire behind the frequency division coding of being sent from the sound source when Bluetooth stereo earphone or Bluetooth stereo device, must be earlier through step S22, in microprocessor, select whether to decipher and decode, as if the action that encryption is arranged at step S10, then this step S22 just needs encrypted data decryption; By the audio processing module stereo sound effect crossfire is carried out the step that audio is handled again, as step S24, last step S26 for another example is described to be exported audio processing stereo sound effect crossfire later from the Bluetooth stereo earphone, listen to for the user.Emphasis of the present invention promptly is the sound effect treatment method of step S24.
Sound effect treatment method of the present invention comprises the processing capacity of the audio of supper bass processing capacity, the various sound fields of emulation and graphic equalizer, dynamic equalizer, equalization parameter device, when the Bluetooth stereo earphone receives a source of sound crossfire through frequency division coding (Subband Coding, SBC) behind the decoded form, utilize the audio processing module to judge the characteristic of this stereo sound effect crossfire, in wherein selecting to add at least one special sound effect crossfire, form a new stereo sound effect crossfire, Bluetooth stereo device changes into analog signal with new stereo sound effect crossfire again and broadcasts out.When handling supper bass, the fundamental frequency effect (effect ofthe missing fundamental) that the audio streams module utilizes people's ear to lose compensates in the frequency range of user's demand or loudspeaker characteristic at extremely low frequency 0Hz, remedies or strengthen the deficiency of output audio crossfire on supper bass is handled of Bluetooth stereo earphone.
When the audio processing module is handled at the audio of the various sound fields of emulation, with sound in different spaces resilience or principle of reflection and transfer voice effect, calculate factors such as space size and wall material, simulate various sound fields truly around audio, comprise emulation music hall, room, stage arenas and large-scale performance meeting-place etc.In addition, the audio processing module is also utilized the sound localization technology, simulate sound by external orientation of difference and distance with the audio emulation technology, comprise distant effect, left and right acoustic channels eclipsing effects (crosstalk), resilience or reflection effect, number of people screen effect, external ear effect and middle ear effect etc. crown all the effect that remote transfer voice receives the people, to reach the sound localization effect that produces the virtual three-dimensional space, allow the user when using this Bluetooth stereo earphone or Bluetooth stereo device, can avoid producing the sound source of sound from the phenomenon in the middle of the head, reduce the fatigue of wearing earphone, also can allow the user use this Bluetooth stereo earphone or Bluetooth stereo device to see a film, when TV or any screen, the phenomenon of avoiding image and sound source of sound location to obscure produces.
General audio is handled the sound that can handle frequency band 20Hz-48KHz scope; when the bass of source of sound is too loud; regular meeting produces distorsion; need this moment in graphic equalizer, to adjust; and the audio processing module can strengthen the processing capacity of graphic equalizer; it is distinguished into several or dozens of voiced band (band) with the stereo sound effect crossfire at frequency band from 0Hz-48KHz even to the 96KHz; demand along with the user; become big or diminished at the composition yield value (gain) of each frequency band of left and right acoustic channels; thereby simulate general; rock music; dance music; classical music; jazz; party is happy; on-the-spot; bass; pop and metallic sound, or set up the effect of audio on their own by the user.
The reinforcement of equalization parameter device processing capacity, then be by the stereo sound effect crossfire is distinguished into several or dozens of central authorities audio frequency point (centralfrequency) at frequency band 0Hz～48KHz even in the 96KHz, audio effect along with user's demand, the yield value of the overtone wave band of adjusting this central audio frequency point and being comprised, the frequency center of each central audio frequency point above with the following overtone composition that comprises, it is suffered that to influence meeting more and more little; The frequency range of each wave band, also can adjust with parameter according to user's demand, when the user adjusts parameter value, can descend gradually/rise in the overtone amount of specifying central audio frequency point both sides, the amplitude of its decline/rising is then decided by parameter value, and parameter value is bigger, decline/rising is faster, the frequency range that meaning is promptly adjusted yield value and influenced is narrower, and parameter value is littler, and the frequency range of then adjusting yield value and being influenced is wideer.The overtone lifting form of central authorities' audio frequency point also can utilize the mode of all types of equalizers or filter to handle.
The reinforcement of dynamic equalizer processing capacity is handled in frequency band 0Hz-96KHz equally, the tendency of compression because the sound experience of people's ear responds, the amplitude that is the loudness of a sound increase is greater than psychological sound equipment increasing degree, therefore, according to the psychological physic characteristic of people's ear at loudness of a sound and sound equipment, the absolute threshold that can experience loudness of a sound following of different frequency can form an audiometric curve (audibility curve), change along with volume, the audio processing module can be adjusted yield value in graphic equalizer and the equalization parameter device automatically according to audiometric curve, no matter therefore how volume changes, the user can obtain optimum efficiency, can not destroy part sound phenomenon, can not slow down the effect of equalizer settings yet because of volume descends because of volume rises.
The above is preferred embodiment of the present invention only, is not to be used for limiting scope of the invention process.Therefore, all equivalent variations or modifications of doing according to described feature of the present patent application scope and spirit all should be included in the claim protection range of the present invention.
Claims (13)
1. a method that increases the audio processing capacity of Bluetooth stereo device is characterized in that, comprises the following steps:
One Bluetooth stereo device receives a source of sound crossfire, and the form of this source of sound crossfire behind the frequency division coding and decoding is a stereo sound effect crossfire;
According to the characteristic of this stereo sound effect crossfire, in this stereo sound effect crossfire, select to add at least one special sound effect crossfire with Digital Signal Processing, form a new stereo sound effect crossfire; And
This Bluetooth stereo device is broadcast after should new stereo sound effect crossfire changing into analog signal.
2. increase the method for the audio processing capacity of Bluetooth stereo device according to claim 1, it is characterized in that, this source of sound crossfire is encoded through frequency division before being received by this Bluetooth stereo device.
3. increase the method for the audio processing capacity of Bluetooth stereo device according to claim 1, it is characterized in that, this Bluetooth stereo device carries out the audio processing after this source of sound crossfire is passed through frequency division coding and decoding.
4. increase the method for the audio processing capacity of Bluetooth stereo device according to claim 1, it is characterized in that the processing capacity of the supper bass processing capacity of this stereo sound effect crossfire of this special sound effect crossfire visitor increase, the audio of the various sound fields of emulation and graphic equalizer, dynamic equalizer, equalization parameter device.
5. as the method for the audio processing capacity of increase Bluetooth stereo device as described in the claim 4, it is characterized in that, this special sound effect crossfire is that the fundamental frequency effect of utilizing people's ear to lose compensates in the frequency 0Hz-96KHz scope of user's demand or loudspeaker characteristic, remedies the deficiency of this Bluetooth stereo device on supper bass is handled.
6. as the method for the audio processing capacity of increase Bluetooth stereo device as described in the claim 4, it is characterized in that, this special sound effect crossfire be utilize sound different spaces can resilience or the principle of reflection and transfer voice effect simulated around audio.
7. as the method for the audio processing capacity of increase Bluetooth stereo device as described in the claim 4, it is characterized in that, this special sound effect crossfire is for utilizing the sound localization technology, and simulation transmits the sound of coming this Bluetooth stereo device by different azimuth and distance, with the audio of the various sound fields of emulation.
8. as the method for the audio processing capacity of increase Bluetooth stereo device as described in the claim 4, it is characterized in that this special sound effect crossfire is the yield value in each voiced band of left and right acoustic channels, variable big or diminish, increase the processing capacity of this graphic equalizer.
9. as the method for the audio processing capacity of increase Bluetooth stereo device as described in the claim 8, it is characterized in that this voiced band is for being distinguished into the voiced band of several or dozens of in frequency band 0Hz-96KHz.
10. as the method for the audio processing capacity of increase Bluetooth stereo device as described in the claim 4, it is characterized in that, this special sound effect crossfire comprises a yield value and a parameter value, need adjust this yield value at several or the central audio frequency dot center of dozens of and the overtone wave band that is comprised thereof according to the user, the adjusting range of overtone wave band increases the audio processing capacity of this equalization parameter device then according to this parameter value.
11. the method as the audio processing capacity of increase Bluetooth stereo device as described in the claim 10 is characterized in that this central authorities' voiced band is in the middle of frequency band 0Hz-96KHz.
12. method as the audio processing capacity of increase Bluetooth stereo device as described in claim 8 or 10, it is characterized in that, this yield value is adjusted according to following formed audiometric curve of sensitive loudness of a sound absolute value of different frequency automatically at different volumes.
13. increase the method for the audio processing capacity of Bluetooth stereo device according to claim 1, it is characterized in that, comprise an audio processing module in this Bluetooth stereo device, in order to add this special sound effect crossfire in the audio crossfire of this source of sound crossfire behind the frequency division coding and decoding, form this new stereo sound effect crossfire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101407148A CN101155439A (en) | 2006-09-30 | 2006-09-30 | Method for intensifying sound effect processing function of Bluetooth stereo device |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2006101407148A CN101155439A (en) | 2006-09-30 | 2006-09-30 | Method for intensifying sound effect processing function of Bluetooth stereo device |
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| CN101155439A true CN101155439A (en) | 2008-04-02 |
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| CNA2006101407148A Pending CN101155439A (en) | 2006-09-30 | 2006-09-30 | Method for intensifying sound effect processing function of Bluetooth stereo device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105704597A (en) * | 2014-11-28 | 2016-06-22 | 南京青衿信息科技有限公司 | Smart headphone provided with sound effect processing system |
| CN105763991A (en) * | 2010-10-02 | 2016-07-13 | 张沈平 | Earphone, corresponding sound source device and control method |
| CN106034274A (en) * | 2015-03-13 | 2016-10-19 | 深圳市艾思脉电子股份有限公司 | 3D sound device based on sound field wave synthesis and synthetic method |
| CN109246515A (en) * | 2018-10-09 | 2019-01-18 | 王青云 | A kind of intelligent earphone and method promoting personalized sound quality function |
| CN109774629A (en) * | 2018-09-30 | 2019-05-21 | 长城汽车股份有限公司 | Vehicle audio automatic adjusting method, system and vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1549463A (en) * | 2003-05-12 | 2004-11-24 | 阳庆电子股份有限公司 | Blueteeth apparatus capable of transmitting stereo |
| KR20050096239A (en) * | 2004-03-29 | 2005-10-05 | 엘지전자 주식회사 | Apparatus and method for outputting audio using blue-tooth |
| CN1722630A (en) * | 2004-07-14 | 2006-01-18 | 汇科兴业股份有限公司 | System for wireless transmission, receiving, and amplification of voice |
| JP2006067468A (en) * | 2004-08-30 | 2006-03-09 | Toshiba Corp | Headphone system |
| KR20060093561A (en) * | 2005-02-22 | 2006-08-25 | 엘지이노텍 주식회사 | Audio signal processing circuit using bluetooth module in home theater system |
-
2006
- 2006-09-30 CN CNA2006101407148A patent/CN101155439A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1549463A (en) * | 2003-05-12 | 2004-11-24 | 阳庆电子股份有限公司 | Blueteeth apparatus capable of transmitting stereo |
| KR20050096239A (en) * | 2004-03-29 | 2005-10-05 | 엘지전자 주식회사 | Apparatus and method for outputting audio using blue-tooth |
| CN1722630A (en) * | 2004-07-14 | 2006-01-18 | 汇科兴业股份有限公司 | System for wireless transmission, receiving, and amplification of voice |
| JP2006067468A (en) * | 2004-08-30 | 2006-03-09 | Toshiba Corp | Headphone system |
| KR20060093561A (en) * | 2005-02-22 | 2006-08-25 | 엘지이노텍 주식회사 | Audio signal processing circuit using bluetooth module in home theater system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105763991A (en) * | 2010-10-02 | 2016-07-13 | 张沈平 | Earphone, corresponding sound source device and control method |
| CN105704597A (en) * | 2014-11-28 | 2016-06-22 | 南京青衿信息科技有限公司 | Smart headphone provided with sound effect processing system |
| CN106034274A (en) * | 2015-03-13 | 2016-10-19 | 深圳市艾思脉电子股份有限公司 | 3D sound device based on sound field wave synthesis and synthetic method |
| CN109774629A (en) * | 2018-09-30 | 2019-05-21 | 长城汽车股份有限公司 | Vehicle audio automatic adjusting method, system and vehicle |
| CN109246515A (en) * | 2018-10-09 | 2019-01-18 | 王青云 | A kind of intelligent earphone and method promoting personalized sound quality function |
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Open date: 20080402 |