CN204761713U - Stereo system that encircles of 3D - Google Patents
Stereo system that encircles of 3D Download PDFInfo
- Publication number
- CN204761713U CN204761713U CN201520297288.3U CN201520297288U CN204761713U CN 204761713 U CN204761713 U CN 204761713U CN 201520297288 U CN201520297288 U CN 201520297288U CN 204761713 U CN204761713 U CN 204761713U
- Authority
- CN
- China
- Prior art keywords
- module
- signal
- audio signal
- phase
- channel audio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Stereophonic System (AREA)
Abstract
The utility model discloses a stereo system that encircles of 3D, select the module including phase match module, sampling module, adder module, frequency matching module and output, phase match pair of module received L channel audio signal and R channel audio signal carry out phase match, sampling module takes a sample to the audio signal who received behind the phase match to signal output to adder module after will taking a sample, after the audio signal that phase match module output will be received to the adder module mixed with the signal after the sampling module sample, the signal output after will mixing arrived frequency matching module, frequency matching module compensates, matees the high low frequency signals who received in the mixed back signal of adder module output, output is selected with L channel audio signal, R channel audio signal to the signal that output selected the module will receive after the output of frequency matching module is matchd. The utility model discloses can realize practicality, the stereo effect of encircleing of the 3D that tone quality is good.
Description
Technical field
The utility model relates to technical field of electronic products, in particular, and particularly a kind of 3D stereo surround system.
Background technology
Along with the development of society, the progress of technology and growth in the living standard, the quality of people to sound it is also proposed higher requirement, traditional stereoly no longer meet that people watch TV, the demand of film, and a kind ofly can build true environment in urgent demand, allow people have sound recovery system on the spot in person.But will how to go to realize under the condition of limited budget and limited space, at this moment 3D stereo surround system is arisen at the historic moment.The playback sound field that this mode produces, except the Sounnd source direction sense that maintain original signal, also supervenes the acoustics around sense and expansion sense (sound leaves hearer's diffusion or has the sensation of reverberation).When listening to surround sound, listener can distinguish the sound from all around, namely surround sound can make spatial sound source expand to whole horizontal plane and even vertical plane by line, therefore can reproduce the space reverberation process of performance hall realistically, have more moving telepresenc.
3D stereo surround, compared with home theater surround sound popular at present, has following advantage: be not strict with source of sound, without the need to coding, is applicable to little space, closely appreciates, less demanding to sound equipment software and hardware.But, in current 3D stereo surround solution, there is some deficiency following: one is incur great expense; Two is need the system of a set of more complicated to realize, as needs DSP realizes its algorithm, also to carry out A/D, D/A conversion, also need MCU to realize to control, in the system of so a set of complexity, through kind of a conversion, process, can there is loss in detail in sound unavoidably, and add various noise, and cost is also high builds; Three is that adjustment is inconvenient, around the degree of depth, range be inconvenient to regulate, the low-and high-frequency of sound is also inconvenient to regulate, and also needs the EQ circuit that increase is extra.
Summary of the invention
The purpose of this utility model is the technical problem existed for prior art, provides a kind of 3D stereo surround system, can realize practicality, 3D stereo surround effect that tonequality is excellent.
In order to solve problem set forth above, the technical solution adopted in the utility model is:
A kind of 3D stereo surround system, comprises phase matched module, sampling module, adder Module, frequency match module and exports and select module; Peripheral left channel audio signal and right channel audio signal are inputed to phase matched module respectively by corresponding L channel and R channel and exported selects module;
Described phase matched module carries out phase matched to the left channel audio signal received and right channel audio signal, and by the audio signal after phase matched, exports to sampling module and adder Module respectively;
Described sampling module samples receiving the audio signal after phase matched, and the signal after sampling is outputted to adder Module;
After signal after the audio signal and sampling module that receive the output of phase matched module sample by described adder Module mixes, mixed signal is outputted to frequency match module;
Described frequency match module compensates the low-and high-frequency signal received in the rear signal of adder Module output mixing, mates, and the signal after coupling is outputted to output selection module;
Described output is selected module that the signal after receiving frequency match module output matching is carried out selection with left channel audio signal, right channel audio signal by corresponding L channel and R channel to export.
Described phase matched module comprises homophase matching module and anti-phase matching module, and wherein left channel audio signal is input to homophase matching module and carries out with matching, and right channel audio signal is input to anti-phase matching module and carries out anti-phase coupling.
Described sampling module comprises sampling unit and depth adjustment module, and wherein sampling unit samples the audio signal after phase matched, takes the background sound in audio signal, medium and low frequency signal, and exports to adder Module; Depth adjustment module carries out the adjustment of sampling amplitude to sampling module.
Described adder Module comprises in-phase adder and anti-phase adder, in-phase adder receive homophase matching module export left channel audio signal and sampling module sample after signal plus, described two signals are mixed into the signal of a left channel audio signal; Anti-phase adder receive anti-phase matching module export right channel audio signal and sampling module sample after signal plus, two signals are mixed into the signal of a right channel audio signal, both carry out anti-phase again while being added, the phase place of right channel audio signal is reduced into the phase place entered before phase matched module.
Described frequency match module comprises the first low frequency matching module, the second low frequency matching module, the first high frequency matching module and the second high frequency matching module, and wherein the first low frequency matching module and the second low frequency matching module carry out suitable compensation enhancing to the bass signal in signal after mixing; First high frequency matching module and the second high frequency matching module carry out suitable compensation to the high pitched signal in signal after mixing and strengthen.
Described output selects module to comprise the first selector switch and the second selector switch, for switching the signal after original signal and process, after two switches are selected, by L channel and the R channel output of correspondence.
Compared with prior art, the beneficial effects of the utility model are:
Convenient and practical being also convenient to of the utility model regulates, do not need dsp chip, do not need software, do not need A/D to change, can be avoided the loss of sound like this, ensure that tonequality also achieves and achieves the effect of 3D around sound field with two loud speakers while pure, solve that complexity in prior art, cost intensive, adjustment are inconvenient, the unpurified problem of tonequality.。
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model 3D stereo surround system.
Embodiment
For the ease of understanding the utility model, below with reference to relevant drawings, the utility model is described more fully.Preferred embodiment of the present utility model is given in accompanying drawing.But the utility model can realize in many different forms, is not limited to embodiment described herein.On the contrary, provide the object of these embodiments be make the understanding of disclosure of the present utility model more comprehensively thorough.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present utility model understand usually.The object of the term used in specification of the present utility model herein just in order to describe specific embodiment, is not intended to be restriction the utility model.
Consult shown in Fig. 1, a kind of 3D stereo surround system that the utility model provides, comprise phase matched module 100, sampling module 200, adder Module 300, frequency match module 400 and export and select module 500, peripheral left channel audio signal and right channel audio signal are inputed to phase matched module 100 respectively by corresponding L channel and R channel and exported selects module 500.
Described phase matched module 100 is connected with audio input signal and sampling module 200, adder Module 300 respectively, after it receives left channel audio signal and right channel audio signal, respectively phase matched is carried out to left channel audio signal and right channel audio signal.While maintenance gain is constant, left channel audio signal and right channel audio signal is become the contrary signal of two phase places, then the audio signal after phase matched is outputted to sampling module 200 and adder Module 300 respectively.
In above-mentioned, phase matched module 100 comprises homophase matching module 110 and anti-phase matching module 120, wherein left channel audio signal is input to homophase matching module 110 and carries out with matching, and right channel audio signal is input to anti-phase matching module 120 and carries out anti-phase coupling.
Described sampling module 200 is connected with phase matched module 100, adder Module 300 respectively, sampling module 200 receives after phase matched module 100 exports the left audio after phase matched and right channel audio signal, the signal after sampling is outputted to adder Module 300 after carrying out sampling.
In above-mentioned, sampling module 200 comprises sampling unit 210 and depth adjustment module 220, wherein sampling unit 210 samples the left channel audio signal after two phase place phase counter-match and right channel audio signal, take the background sound in left channel audio signal and right channel audio signal, medium and low frequency signal, and export to adder Module 300; Depth adjustment module 220 can carry out the adjustment of sampling amplitude to sampling module 210, thus can adjust easily 3D around depth and broadness.
Described adder Module 300 is connected with phase matched module 100, sampling module 200, frequency match module 400 respectively, mixed signal is outputted to frequency match module 400 after being mixed by the signal received after audio signal that phase matched module 100 exports and sampling module 200 sample by it.
In above-mentioned, adder Module 300 comprises in-phase adder 310 and anti-phase adder 320, in-phase adder 310, receiving left channel audio signal that homophase matching module 110 exports and the signal plus that sampling module 200 is sampled, is mixed into two signals the signal of a left channel audio signal.Anti-phase adder 320 receive right channel audio signal that anti-phase matching module 120 exports and sampling module 200 sample after signal plus, two signals are mixed into the signal of a right channel audio signal, both carry out anti-phase again while being added, the phase place of right channel audio signal is reduced into the phase place entered before phase matched module 100.Anti-phase adder 320 not only makes adder, is also used as phase matched, the phase place of right channel audio signal can be reduced.
Described frequency match module 400 is respectively with adder Module 300 and export and select module 500 to be connected, it receives adder Module 300 and exports mixed signal, low-and high-frequency signal in signal after mixing is compensated, mated, and the signal after coupling is outputted to output selection module 500.
In above-mentioned, frequency match module 400 comprises the first low frequency matching module 410, second low frequency matching module 420, first high frequency matching module 411 and the second high frequency matching module 421, wherein the first low frequency matching module 410 and the second low frequency matching module 420 carry out suitable compensation according to the acoustic characteristic of whole system to the bass signal in signal after mixing and strengthen, thus can increase the thick and heavy sense of bass and feel with shock.First high frequency matching module 411 and the second high frequency matching module 421 carry out suitable compensation according to the acoustic characteristic of whole system to the high pitched signal in signal after mixing and strengthen, thus can increase high pitch definition, penetrability and details reducing power.
Described output selection module 500 inputs with frequency match module 400 and left and right acoustic channels respectively, left and right acoustic channels exports and is connected, it carries out selection to the signal after receiving frequency match module 400 output matching and left channel audio signal, right channel audio signal and exports, and namely carries out selection with the signal after 3D process by corresponding L channel and R channel to original signal and exports.
In above-mentioned, export and select module 500 to comprise the first selector switch 510 and the second selector switch 520, for switching the signal after original signal and process, namely by the next hobby according to oneself of user and residing acoustic surrounding, select whether to listen primary sound or 3D surround sound, after the first selector switch 510 and the second selector switch 520 are selected, exported by L channel and R channel respectively.
Above-described embodiment is the utility model preferably execution mode; but execution mode of the present utility model is not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection range of the present utility model.
Claims (6)
1. a 3D stereo surround system, is characterized in that: comprise phase matched module, sampling module, adder Module, frequency match module and export and select module; Peripheral left channel audio signal and right channel audio signal are inputed to phase matched module respectively by corresponding L channel and R channel and exported selects module;
Described phase matched module carries out phase matched to the left channel audio signal received and right channel audio signal, and by the audio signal after phase matched, exports to sampling module and adder Module respectively;
Described sampling module samples receiving the audio signal after phase matched, and the signal after sampling is outputted to adder Module;
After signal after the audio signal and sampling module that receive the output of phase matched module sample by described adder Module mixes, mixed signal is outputted to frequency match module;
Described frequency match module compensates the low-and high-frequency signal received in the rear signal of adder Module output mixing, mates, and the signal after coupling is outputted to output selection module;
Described output is selected module that the signal after receiving frequency match module output matching is carried out selection with left channel audio signal, right channel audio signal by corresponding L channel and R channel to export.
2. 3D stereo surround system according to claim 1, it is characterized in that: described phase matched module comprises homophase matching module and anti-phase matching module, wherein left channel audio signal is input to homophase matching module and carries out with matching, and right channel audio signal is input to anti-phase matching module and carries out anti-phase coupling.
3. 3D stereo surround system according to claim 1, it is characterized in that: described sampling module comprises sampling unit and depth adjustment module, wherein sampling unit samples the audio signal after phase matched, take the background sound in audio signal, medium and low frequency signal, and export to adder Module; Depth adjustment module carries out the adjustment of sampling amplitude to sampling module.
4. 3D stereo surround system according to claim 2, it is characterized in that: described adder Module comprises in-phase adder and anti-phase adder, in-phase adder receive homophase matching module export left channel audio signal and sampling module sample after signal plus, described two signals are mixed into the signal of a left channel audio signal; Anti-phase adder receive anti-phase matching module export right channel audio signal and sampling module sample after signal plus, two signals are mixed into the signal of a right channel audio signal, both carry out anti-phase again while being added, the phase place of right channel audio signal is reduced into the phase place entered before phase matched module.
5. 3D stereo surround system according to claim 1, it is characterized in that: described frequency match module comprises the first low frequency matching module, the second low frequency matching module, the first high frequency matching module and the second high frequency matching module, wherein the first low frequency matching module and the second low frequency matching module carry out suitable compensation enhancing to the bass signal in signal after mixing; First high frequency matching module and the second high frequency matching module carry out suitable compensation to the high pitched signal in signal after mixing and strengthen.
6. 3D stereo surround system according to claim 1, it is characterized in that: described output selects module to comprise the first selector switch and the second selector switch, for switching the signal after original signal and process, after two switches are selected, by L channel and the R channel output of correspondence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520297288.3U CN204761713U (en) | 2015-05-08 | 2015-05-08 | Stereo system that encircles of 3D |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520297288.3U CN204761713U (en) | 2015-05-08 | 2015-05-08 | Stereo system that encircles of 3D |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204761713U true CN204761713U (en) | 2015-11-11 |
Family
ID=54476377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520297288.3U Active CN204761713U (en) | 2015-05-08 | 2015-05-08 | Stereo system that encircles of 3D |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204761713U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106211007A (en) * | 2015-05-08 | 2016-12-07 | 深圳市三诺声智联股份有限公司 | A kind of stereo surrounding system of 3D |
| CN107736037A (en) * | 2017-08-30 | 2018-02-23 | 万魔声学科技有限公司 | Sound playing method, equipment and readable storage medium storing program for executing |
-
2015
- 2015-05-08 CN CN201520297288.3U patent/CN204761713U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106211007A (en) * | 2015-05-08 | 2016-12-07 | 深圳市三诺声智联股份有限公司 | A kind of stereo surrounding system of 3D |
| CN106211007B (en) * | 2015-05-08 | 2022-01-14 | 深圳市三诺声智联股份有限公司 | 3D stereo surround system |
| CN107736037A (en) * | 2017-08-30 | 2018-02-23 | 万魔声学科技有限公司 | Sound playing method, equipment and readable storage medium storing program for executing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Jot et al. | Digital signal processing issues in the context of binaural and transaural stereophony | |
| Noisternig et al. | A 3D ambisonic based binaural sound reproduction system | |
| FI113147B (en) | Method and signal processing apparatus for transforming stereo signals for headphone listening | |
| US5594800A (en) | Sound reproduction system having a matrix converter | |
| CN101461258B (en) | Mixing techniques for mixing audio | |
| CN101609667B (en) | Method for realizing karaoke function in PMP player | |
| CN101112120A (en) | Apparatus and method of processing multi-channel audio input signals to produce at least two channel output signals therefrom, and computer readable medium containing executable code to perform the me | |
| CN203181165U (en) | Wireless microphone and household karaoke system | |
| US8571232B2 (en) | Apparatus and method for a complete audio signal | |
| JPH0690209A (en) | Method and apparatus for encoding as well as method and apparatus for decoding of plurality of channels | |
| JPH1091390A (en) | Computer, computer system and desktop theater system | |
| WO1992015180A1 (en) | Sound reproduction system | |
| CN106211007A (en) | A kind of stereo surrounding system of 3D | |
| CN104969571B (en) | Method for rendering stereophonic signal | |
| CN204761713U (en) | Stereo system that encircles of 3D | |
| CN203313386U (en) | Wireless audio processing equipment, wireless audio player, household karaoke system | |
| Frank et al. | Case study on ambisonics for multi-venue and multi-target concerts and broadcasts | |
| CN203747954U (en) | Microphone and audio transmission system | |
| KR20090001928A (en) | Apparatus for sounder for multimedia lecture | |
| CN207304893U (en) | Multi signal voice input output system | |
| CN2938669Y (en) | Bass processing circuit | |
| CN208707868U (en) | A kind of microphone and microphone system | |
| JP6647063B2 (en) | Audio signal characteristic adjustment device and audio signal characteristic adjustment program | |
| CN100396162C (en) | Signal processing method for three-loudspeaker virtual 5.1 channel surround sound | |
| CN206260063U (en) | A kind of microphone system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160408 Address after: Sannuo smart building 3012 No. 518000 Guangdong city of Shenzhen province Nanshan District Guangdong streets Binhai Avenue 21 floor Patentee after: Shenzhen 3Nod Acousticlink Co., Ltd. Patentee after: SHENZHEN 3NOD DIGITAL TECHNOLOGY CO., LTD. Address before: 518000 Sannuo wisdom building, 3012 Binhai Avenue, Shenzhen, Guangdong, Nanshan District Patentee before: Shenzhen Sannuo Digital Audio & Video Co., Ltd. |