CN102438200A - Audio signal output method and terminal equipment - Google Patents
Audio signal output method and terminal equipment Download PDFInfo
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- CN102438200A CN102438200A CN2010105002679A CN201010500267A CN102438200A CN 102438200 A CN102438200 A CN 102438200A CN 2010105002679 A CN2010105002679 A CN 2010105002679A CN 201010500267 A CN201010500267 A CN 201010500267A CN 102438200 A CN102438200 A CN 102438200A
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- 230000005236 sound signal Effects 0.000 title claims abstract description 162
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000012545 processing Methods 0.000 claims abstract description 12
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- 238000005457 optimization Methods 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 3
- 238000013507 mapping Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 20
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- 230000008901 benefit Effects 0.000 description 1
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Abstract
The invention provides an audio signal output method and terminal equipment, which are applied to the terminal equipment which is sequentially provided with a surround left loudspeaker, a front left loudspeaker, a middle loudspeaker, a front right loudspeaker and a surround right loudspeaker, wherein the surround left loudspeaker, the front left loudspeaker, the middle loudspeaker, the front right loudspeaker and the surround right loudspeaker are positioned on the same plane, and the method comprises the following steps: receiving an audio signal; respectively carrying out post-surround sound effect processing on the surround left channel audio signal and the surround right channel audio signal; the surround left channel audio signal and the surround right channel audio signal after being processed are respectively output to the surround left loudspeaker and the surround right loudspeaker, so that the direction sense of the audio signals can be effectively improved, and the stereo effect is enhanced.
Description
Technical field
The present invention relates to stereo treatment technology, relate in particular to a kind of method and terminal equipment of audio signal output.
Background technology
On integrated computer, adopt dual track output usually,, therefore cause the sense of direction of sound and third dimension relatively poor, influenced user's experience effect owing to adopt dual track output can cause sound to spread out of from both direction.
At present, adopt following two kinds of solutions to improve the stereophonic effect of dual track output usually:
Scheme one, the output of employing dual track; And combine third party's audio process software that sound is handled; Just, through third party's audio process software dual track is exported the virtual surround sound effect, but the sensing range of virtual surround sound effect is narrower; If the recipient is to a side shifting, stereophonic effect is understood variation;
Scheme two, the output of employing dual track; And combine third party's audio process software that sound is handled; Just, dual track is exported the virtual surrounding effect that converts multichannel to, after the employing virtual surround sound effect through third party's audio process software; The virtual multichannel that comes out need shuffling to about in two loud speakers, can a part of surrounding sound effect of loss in the process of shuffling.The playback capability of adding two loud speakers is limited, causes virtual rearmounted surrounding sound effect not obvious, and sense of direction is still poor.
Hence one can see that, and the technical scheme of existing enhancing dual track output stereophonic effect can not satisfy user's demand.
Summary of the invention
In order to address the above problem, the purpose of the embodiment of the invention provides a kind of method and terminal equipment of audio signal output, can effectively improve the sense of direction of audio signal, strengthens stereophonic effect.
In order to achieve the above object; The present invention provides a kind of method of audio signal output; Be applied to be disposed with around on left speaker, preposition left speaker, center loudspeaker, preposition right loud speaker and the terminal equipment around right loud speaker; Saidly be positioned on the same plane around left speaker, preposition left speaker, center loudspeaker, preposition right loud speaker with around right loud speaker, said method comprises:
Received audio signal, said audio signal comprises: around left channel audio signal with around right channel audio signal;
To said around left channel audio signal and said around right channel audio signal carry out respectively rearmounted around audio handle;
Said after handling outputed to said respectively around left speaker and said around in the right loud speaker around right channel audio signal around left channel audio signal and said.
Preferably, said audio signal also comprises: preposition left channel audio signal, preposition right channel audio signal and center channels audio signal, and said method also comprises:
Said preposition left channel audio signal is outputed to said preposition left speaker, said preposition right channel audio signal is outputed in the said preposition right loud speaker; With said center channels audio signal output in center loudspeaker.
Preferably, said to said around left channel audio signal and said around right channel audio signal carry out rearmounted around the audio processed steps be:
Handle around left channel audio signal and the said audio that carries out the mapping of psychological sound source position through number of people transfer function around right channel audio signal said.
Preferably, said preposition left channel audio signal is being outputed to said preposition left speaker, said preposition right channel audio signal is outputed to before the step of said right channel loudspeaker, said method also comprises:
Respectively said preposition left channel audio signal and said preposition right channel audio signal are carried out the sound field extension process.
Preferably, also comprise as if said audio signal: during the supper bass channel audio signal, said method also comprises:
Said supper bass channel audio signal is carried out the frequency response optimization process, the said supper bass channel audio signal after handling is sent to subwoofer.
Preferably, after receiving said audio signal, said method also comprises:
Judge that said audio signal is binaural audio signal or multi-channel audio signal;
If said audio signal is a binaural audio signal, then said binaural audio signal is invented multi-channel audio signal, carry out Audio Signal Processing again;
If when said audio signal is multi-channel audio signal, directly carry out Audio Signal Processing.
In order to achieve the above object, the present invention also provides a kind of terminal equipment, comprising:
One housing;
A plurality of loud speakers; Comprise: set gradually around left speaker, preposition left speaker, center loudspeaker, preposition right loud speaker with around right loud speaker, wherein saidly be positioned on the same side of said housing around left speaker, preposition left speaker, center loudspeaker, preposition right loud speaker with around right loud speaker;
The Audio Processing chip; Be arranged in the said housing; Be used for to around left channel audio signal and around right channel audio signal carry out respectively rearmounted around audio handle, it is said around left speaker and said around in the right loud speaker that said after will handling then outputs to respectively around right channel audio signal around left channel audio signal and said.
Preferably, said Audio Processing chip also is used for said preposition left channel audio signal and said right channel audio signal are outputed to said preposition left speaker and said preposition right loud speaker respectively; With said center channels audio signal output in said center loudspeaker.
Preferably, said a plurality of loud speakers also comprise: a subwoofer, be arranged on the side of said housing, and be used for the supper bass channel audio signal of playing audio signal.
Preferably, the power of said subwoofer is 3～5 watts, and said is 3～5 watts around left speaker with around the power of right loud speaker, and the power of said preposition left speaker, preposition right loud speaker and center loudspeaker is 2 watts.
Can know that by technique scheme the embodiment of the invention has following beneficial effect:
1), through to around left channel audio signal and around right channel audio signal carry out respectively rearmounted around audio handle, can effectively improve the sense of direction of audio signal, strengthen stereophonic effect.
2), respectively to preposition left channel audio signal with there is preposition right channel audio signal to carry out the sound field extension process, little and the problem that sound that cause is lost of sound can not appear to strengthen the stereophonic effect of playback, to make.
3), a preposition left side/right loud speaker, center loudspeaker, from physically separating, so each sound channel is relatively independent, sound source is complementary to be disturbed around a left side/right loud speaker and subwoofer;
4), through independent subwoofer is set, realized real bass effect.
Description of drawings
Fig. 1 is the method flow diagram of embodiments of the invention sound intermediate frequency signal output;
Fig. 2 is the structure chart of terminal equipment in the embodiments of the invention;
Fig. 3 is the position view of loud speaker in the embodiments of the invention;
Fig. 4 is that the position between preposition left speaker in the embodiments of the invention, preposition right loud speaker and the hearer concerns sketch map.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer,, the embodiment of the invention is done explanation in further detail below in conjunction with embodiment and accompanying drawing.At this, illustrative examples of the present invention and explanation are used to explain the present invention, but not as to qualification of the present invention.
Referring to Fig. 1; Method flow diagram for the output of embodiments of the invention sound intermediate frequency signal; Be applied to be provided with preposition left speaker, preposition right loud speaker, center loudspeaker, around on left speaker and the terminal equipment around right loud speaker; Wherein preposition left speaker, preposition right loud speaker, center loudspeaker, be positioned on the same plane around left speaker with around right loud speaker, this method comprises:
The audio signal that step 102, judgement receive is binaural audio signal or multi-channel audio signal, if multi-channel audio signal, then execution in step 103; Otherwise, execution in step 104,106,108,109;
Above-mentioned multichannel can be 5.1 sound channels, 7.1 sound channels etc., also is not limited to this certainly.
In the present embodiment, can dual track be decomposed into virtual multi-channel audio signal (for example 5.1 sound channels) through the audio decoder module.
Be that example describes with 5.1 sound channels below.This moment, audio signal comprised: preposition left channel audio signal, preposition right channel audio signal, center channels audio signal, around left channel audio signal with around right channel audio signal.
In the present embodiment, can adopt number of people transfer function, send from left back and right back on the sound perception that makes the recipient hear carrying out the audio processing of psychological sound source position respectively around left channel audio signal with around right channel audio signal.
Step 107, will handle back preposition left channel audio signal and right channel audio signal and output to respectively in preposition left speaker and the preposition right loud speaker;
In the present embodiment; Behind the code stream of decoder output PCM (pulse modulation) form; Can judge at first that audio files is 2.0 sound channels (dual track) or 5.1 sound channels (multichannel), if 2.0 sound channels then can resolve into 5.1 virtual sound channels through 2.0 sound channels that decoder module will be imported.After the decomposition; Again in virtual 5.1 sound channels that obtain around left channel audio signal and around right channel audio signal carry out respectively rearmounted around audio handle; A preposition left side/right channel audio signal being carried out the audio of sound field expansion handles; Counterweight subwoofer channel audio signal and center channels audio signal are carried out volume and are increased the frequency response optimization process.
Can know that by technique scheme the embodiment of the invention has following beneficial effect:
1), through to around left channel audio signal and around right channel audio signal carry out respectively rearmounted around audio handle, can effectively improve the sense of direction of audio signal, strengthen stereophonic effect.
2), respectively to preposition left channel audio signal with there is preposition right channel audio signal to carry out the sound field extension process, little and the problem that sound that cause is lost of sound can not appear to strengthen the stereophonic effect of playback, to make.
3), a preposition left side/right loud speaker, center loudspeaker, from physically separating, so each sound channel is relatively independent, sound source is complementary to be disturbed around a left side/right loud speaker and subwoofer;
4), through independent subwoofer is set, realized real bass effect.
Referring to Fig. 2, be the structured flowchart of terminal equipment in the embodiments of the invention, this terminal equipment comprises:
One housing;
A plurality of loud speakers; Comprise: set gradually around left speaker 24, preposition left speaker 21, center loudspeaker 23, preposition right loud speaker 22 with around right loud speaker 25, wherein be positioned on the same side of said housing around left speaker 24, preposition left speaker 21, center loudspeaker 23, preposition right loud speaker 22 with around right loud speaker 25;
In another embodiment of the present invention, this Audio Processing chip 26 also is used for preposition left channel audio signal and right channel audio signal are outputed to said preposition left speaker 21 and preposition right loud speaker 22 respectively; With said center channels audio signal output in said center loudspeaker 23.
In another embodiment of the present invention, said a plurality of loud speakers also comprise: a subwoofer 27, be arranged on the side of said housing, and be used for the supper bass channel audio signal of playing audio signal.
In another embodiment of the present invention; The power of said subwoofer 27 is 3～5 watts; Said is 3～5 watts around left speaker 24 with around the power of right loud speaker 25, and the power of said preposition left speaker 21, preposition right loud speaker 22 and center loudspeaker 23 is 2 watts.
Referring to Fig. 3; Position view for loud speaker in the embodiments of the invention; With the integrated computer is example; Can with preposition left speaker (L) 21, preposition right loud speaker (R) 22, center loudspeaker (C) 23, around left speaker (LS) 24 and around right loud speaker (RS) 25 be placed on integrated computer panel (Panel) 31 around, and be positioned on the same plane.Only show the relative position relation between each loud speaker among Fig. 3, but do not limit the concrete installation site between each loud speaker.Wherein
Be used for left back and right latter two sound channel of 5.1 sound channels is carried out playback around left speaker 24 with around right loud speaker 25, be positioned at the both sides of Panel around left speaker 24 with around the position of right loud speaker 25.Preposition left speaker 21, preposition right loud speaker 22 and center loudspeaker 23 are used for the preceding left side to 5.1 sound channels, the preceding right side and center channels and carry out playback.
Referring to Fig. 4, the distance between preposition left speaker and the preposition right loud speaker can be confirmed through the relation shown in the figure.As shown in the figure, between hearer and the panel (Panel) apart from d, preposition left speaker (L) and preposition right loud speaker (R) and Panel central point apart from a, and angle β,
Relation between the three is: tan β=a/d is 10 °≤β≤30 ° wherein, and the integrated computer that satisfies this design relation can obtain auditory perception preferably.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (10)
1. the method for an audio signal output; Be applied to be disposed with around on left speaker, preposition left speaker, center loudspeaker, preposition right loud speaker and the terminal equipment around right loud speaker; Saidly be positioned on the same plane around left speaker, preposition left speaker, center loudspeaker, preposition right loud speaker with around right loud speaker; It is characterized in that said method comprises:
Received audio signal, said audio signal comprises: around left channel audio signal with around right channel audio signal;
To said around left channel audio signal and said around right channel audio signal carry out respectively rearmounted around audio handle;
Said after handling outputed to said respectively around left speaker and said around in the right loud speaker around right channel audio signal around left channel audio signal and said.
2. the described method of claim 1 is characterized in that, said audio signal also comprises: preposition left channel audio signal, preposition right channel audio signal and center channels audio signal, and said method also comprises:
Said preposition left channel audio signal is outputed to said preposition left speaker, said preposition right channel audio signal is outputed in the said preposition right loud speaker; With said center channels audio signal output in center loudspeaker.
3. method according to claim 1 is characterized in that, said to said around left channel audio signal and said around right channel audio signal carry out rearmounted around the audio processed steps be:
Handle around left channel audio signal and the said audio that carries out the mapping of psychological sound source position through number of people transfer function around right channel audio signal said.
4. method according to claim 2 is characterized in that, said preposition left channel audio signal is being outputed to said preposition left speaker, and said preposition right channel audio signal is outputed to before the step of said right channel loudspeaker, and said method also comprises:
Respectively said preposition left channel audio signal and said preposition right channel audio signal are carried out the sound field extension process.
5. method according to claim 1 is characterized in that, if said audio signal also comprises: during the supper bass channel audio signal, said method also comprises:
Said supper bass channel audio signal is carried out the frequency response optimization process, the said supper bass channel audio signal after handling is sent to subwoofer.
6. method according to claim 1 is characterized in that, after receiving said audio signal, said method also comprises:
Judge that said audio signal is binaural audio signal or multi-channel audio signal;
If said audio signal is a binaural audio signal, then said binaural audio signal is invented multi-channel audio signal, carry out Audio Signal Processing again;
If when said audio signal is multi-channel audio signal, directly carry out Audio Signal Processing.
7. a terminal equipment is characterized in that, comprising:
One housing;
A plurality of loud speakers; Comprise: set gradually around left speaker, preposition left speaker, center loudspeaker, preposition right loud speaker with around right loud speaker, wherein saidly be positioned on the same side of said housing around left speaker, preposition left speaker, center loudspeaker, preposition right loud speaker with around right loud speaker;
The Audio Processing chip; Be arranged in the said housing; Be used for to around left channel audio signal and around right channel audio signal carry out respectively rearmounted around audio handle, it is said around left speaker and said around in the right loud speaker that said after will handling then outputs to respectively around right channel audio signal around left channel audio signal and said.
8. terminal equipment according to claim 7 is characterized in that, said Audio Processing chip also is used for said preposition left channel audio signal and said right channel audio signal are outputed to said preposition left speaker and said preposition right loud speaker respectively; With said center channels audio signal output in said center loudspeaker.
9. terminal equipment according to claim 7 is characterized in that, said a plurality of loud speakers also comprise: a subwoofer, be arranged on the side of said housing, and be used for the supper bass channel audio signal of playing audio signal.
10. terminal equipment according to claim 7; It is characterized in that; The power of said subwoofer is 3～5 watts, and said is 3～5 watts around left speaker with around the power of right loud speaker, and the power of said preposition left speaker, preposition right loud speaker and center loudspeaker is 2 watts.
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| CN2010105002679A CN102438200A (en) | 2010-09-29 | 2010-09-29 | Audio signal output method and terminal equipment |
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| CN2010105002679A CN102438200A (en) | 2010-09-29 | 2010-09-29 | Audio signal output method and terminal equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105407443A (en) * | 2015-10-29 | 2016-03-16 | 小米科技有限责任公司 | Sound recording method and device |
| CN107731139A (en) * | 2017-11-14 | 2018-02-23 | 苏州数艺网络科技有限公司 | Entertaining bus platform Digital Media label apparatus based on AR augmented realities |
| CN112346694A (en) * | 2019-08-08 | 2021-02-09 | 海信视像科技股份有限公司 | Display device |
| CN114501297A (en) * | 2022-04-02 | 2022-05-13 | 荣耀终端有限公司 | Audio processing method and electronic equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1713784A (en) * | 2004-06-16 | 2005-12-28 | 三星电子株式会社 | Apparatus and method for reproducing 7.1-channel sound |
| CN1731896A (en) * | 2005-08-19 | 2006-02-08 | 杨炼 | Audio-visual integrated home theater installation |
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2010
- 2010-09-29 CN CN2010105002679A patent/CN102438200A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1713784A (en) * | 2004-06-16 | 2005-12-28 | 三星电子株式会社 | Apparatus and method for reproducing 7.1-channel sound |
| CN1731896A (en) * | 2005-08-19 | 2006-02-08 | 杨炼 | Audio-visual integrated home theater installation |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105407443A (en) * | 2015-10-29 | 2016-03-16 | 小米科技有限责任公司 | Sound recording method and device |
| US9930467B2 (en) | 2015-10-29 | 2018-03-27 | Xiaomi Inc. | Sound recording method and device |
| CN107731139A (en) * | 2017-11-14 | 2018-02-23 | 苏州数艺网络科技有限公司 | Entertaining bus platform Digital Media label apparatus based on AR augmented realities |
| CN112346694A (en) * | 2019-08-08 | 2021-02-09 | 海信视像科技股份有限公司 | Display device |
| CN112346694B (en) * | 2019-08-08 | 2023-03-21 | 海信视像科技股份有限公司 | Display device |
| CN114501297A (en) * | 2022-04-02 | 2022-05-13 | 荣耀终端有限公司 | Audio processing method and electronic equipment |
| CN114501297B (en) * | 2022-04-02 | 2022-09-02 | 北京荣耀终端有限公司 | Audio processing method and electronic equipment |
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Application publication date: 20120502 |