CN102447996A - Stereo audio system and audio-visual equipment - Google Patents
Stereo audio system and audio-visual equipment Download PDFInfo
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- CN102447996A CN102447996A CN2010105011502A CN201010501150A CN102447996A CN 102447996 A CN102447996 A CN 102447996A CN 2010105011502 A CN2010105011502 A CN 2010105011502A CN 201010501150 A CN201010501150 A CN 201010501150A CN 102447996 A CN102447996 A CN 102447996A
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Abstract
The invention provides a stereo audio system and audio-visual equipment. A program source module of the stereo audio system is used for extracting and outputting a sound source signal of a program source. An audio decoding module is used for decoding the sound source signal and outputting the sound source signal. A loud-speaking module comprises a plurality of loudspeakers arranged above and at the periphery of a user; and the loudspeakers respectively correspond to a plurality of different sound channels. A power amplifier module comprises a plurality of power amplifiers which are mutually independent; and the power amplifiers are used for respectively pushing the loudspeakers in the loud-speaking module. An audio signal distributing module is used for distributing an audio signal to the power amplifiers in the power amplifier module, thereby driving the power amplifiers to push the loudspeakers in corresponding sound channels to sound. A central processing unit is used for controlling the audio signal distribution module according to an original sound field signal in the sound source signal. According to the stereo audio system and the audio-visual equipment provided by the invention, a loud-speaking array is arranged above and at the periphery of the use, thereby creating a stereo sound field with the better effect and enabling the stereo sound field to be coherent and linear.
Description
Technical field
The present invention relates to the audio visual technology field, relate in particular to a kind of stereo audio system and audio-visual equipment.
Background technology
Continuous development along with electronics, computer technology; The improvement of the video technique in the audio-visual equipment (like MEPG-4, H.264 wait), video equipment (like LCD TV, LED TV, 3D TV, IMAX screen etc.) because video algorithm, user's experience visually has bigger raising and improvement.Yet still there is defective in the Audiotechnica in the audio-visual equipment, is difficult to reduce the effect of nature sound source, can't experience for the user provide the high-quality sense of hearing.
Existing audio system adopts technology such as binary channels, 5.1 passages and 7.1 passages usually, solid, the surrounding effect of simulation reconstruction nature source of sound.Yet the solid that audio system appears, surrounding effect depend on the position of listener with respect to sound channel, but the sound channel distribution of dual track, 5.1 sound channels and 7.1 sound channels technology is all even inadequately, and the user can't obtain the real sense of hearing and experience.Especially when having the sound generation source that moves in TV programme, the film, sound field can't keep linking up, linearity.
Secondly, it is less that the best of the audio system of employing dual track, 5.1 sound channels or 7.1 sound channels technology is listened to the position area, is not easy to many people and listens to, and makes can't guarantee that everyone can both obtain optimum experience when watching film or listening to music.In addition, because the best limitation of listening to the position area is higher to installation environment, specification requirement when causing existing audio system to be applied to home theater equipment or cinema screening equipment, do not utilize marketing and application.
Summary of the invention
In view of this, the technical problem that the present invention will solve provides a kind of stereo audio system and audio-visual equipment, can build the stereophonic field of better effects if.
The present invention provides a kind of stereo audio system, comprises program source module, audio decoder module, the module of raising one's voice, power amplifier module, audio signal distribution module and central processing unit.The program source module is used for extracting the sound source signal of program source, and exports said sound source signal.Audio decoder module be used to decode said sound source signal and output audio signal.The module of raising one's voice comprises that being arranged at the user top reaches a plurality of loud speakers all around, corresponds respectively to a plurality of different sound channels.Power amplifier module comprises a plurality of separate amplifirers, is used for promoting respectively a plurality of loud speakers of the said module of raising one's voice.The audio signal distribution module is used for distributing a plurality of amplifirers of said audio signal to said power amplifier module, thereby drives the loud speaker sounding that amplifirer promotes corresponding sound channel.Central processing unit is used for controlling said audio signal distribution module according to the original acoustic field signal of said sound source signal.
As further improvement of the present invention, said audio decoder module also comprises volume control unit and tone regulon.Wherein, volume control unit is used to regulate the volume of said audio signal.The tone regulon is used to regulate the tone of said audio signal.
As further improvement of the present invention, said power amplifier module comprises efficient D class A amplifier A.
As further improvement of the present invention, said audio signal distribution module also comprises the preparatory amplifying unit of audio signal, is used for said audio signal is amplified in advance.
As further improvement of the present invention, the said module of raising one's voice be divided into be arranged at user top on put the array of raising one's voice, be arranged at raise one's voice array, a left side of the preposition array of raising one's voice, postposition around the user and put raise one's voice array and the right side and put the array of raising one's voice.
As further improvement of the present invention, raise one's voice array, a left side of the said preposition array of raising one's voice, postposition put raise one's voice array and the right side and put the array of raising one's voice and be square and be distributed in around the user.
As further improvement of the present invention, put the array of raising one's voice on said for circular.
As further improvement of the present invention, the said module of raising one's voice is divided into puts raise one's voice array and the ring-type array of raising one's voice.Wherein, put the array of raising one's voice on and be arranged at the user top.The ring-type array of raising one's voice is arranged at around the user.
As further improvement of the present invention, put raise one's voice display and ring-type on said and raise one's voice array for circular.
The present invention also provides a kind of audio-visual equipment, comprises program source module, audio decoder module, the module of raising one's voice, power amplifier module, audio signal distribution module, central processing unit, video decode module and video display.The program source module is used for extracting the sound source signal of program source and looks source signal, and exports said sound source signal and look source signal.Audio decoder module be used to decode said sound source signal and output audio signal.The module of raising one's voice comprises that being arranged at the user top reaches a plurality of loud speakers all around, corresponds respectively to a plurality of different sound channels.Power amplifier module comprises a plurality of separate amplifirers, is used for promoting respectively a plurality of loud speakers of the said module of raising one's voice.The audio signal distribution module is used for distributing a plurality of amplifirers of said audio signal to said power amplifier module, thereby drives the loud speaker sounding that amplifirer promotes corresponding sound channel.Central processing unit is used for controlling said audio signal distribution module according to the original acoustic field signal of said sound source signal.Video decode module be used to decode said source signal of looking and outputting video signal.Video display is used for according to said vision signal display video.
As further improvement of the present invention, said audio decoder module also comprises volume control unit and tone regulon.Wherein, volume control unit is used to regulate the volume of said audio signal.The tone regulon is used to regulate the tone of said audio signal.
As further improvement of the present invention, said power amplifier module comprises efficient D class A amplifier A.
As further improvement of the present invention, said audio signal distribution module also comprises the preparatory amplifying unit of audio signal, is used for said audio signal is amplified in advance.
As further improvement of the present invention, the said module of raising one's voice be divided into be arranged at user top on put the array of raising one's voice, be arranged at raise one's voice array, a left side of the preposition array of raising one's voice, postposition around the user and put raise one's voice array and the right side and put the array of raising one's voice.
As further improvement of the present invention, raise one's voice array, a left side of the said preposition array of raising one's voice, postposition put raise one's voice array and the right side and put the array of raising one's voice and be square and be distributed in around the user.
As further improvement of the present invention, put the array of raising one's voice on said for circular.
As further improvement of the present invention, the said module of raising one's voice is divided into puts raise one's voice array and the ring-type array of raising one's voice.Wherein, put the array of raising one's voice on and be arranged at the user top.The ring-type array of raising one's voice is arranged at around the user.
As further improvement of the present invention, put raise one's voice display and ring-type on said and raise one's voice array for circular.
Stereo audio system provided by the invention and audio-visual equipment; Promote to be arranged at the loud speaker of corresponding sound channel in user top and the array of raising one's voice all around through a plurality of independently amplifirers of central processing unit control; Thereby build the better stereophonic field of effect, and make stereophonic field coherent, linear.
Description of drawings
Fig. 1 is the circuit module signal of stereo audio system provided by the invention;
Fig. 2 is the sketch map of a kind of execution mode of module of raising one's voice in the stereo audio system provided by the invention;
Fig. 3 is the sketch map of the another kind of execution mode of module of raising one's voice in the stereo audio system provided by the invention;
Fig. 4 is the circuit module sketch map of audio-visual equipment provided by the invention.
Embodiment
Do further explain below in conjunction with accompanying drawing and execution mode of the present invention.
Fig. 1 is the circuit module sketch map of stereo audio system 100 provided by the invention.As shown in Figure 1, stereo audio system 100 comprises program source module 110, audio decoder module 120, central processing unit 130, audio signal distribution module 140, power amplifier module 150 and loudspeaker module 160.
Wherein, program source module 110 is used for extracting the sound source signal of program source, and exports said sound source signal to audio decoder module 120 and CPU module 130.Wherein, said sound source signal comprises original sound field information.
The module of raising one's voice 160 comprises around a plurality of separate loud speaker that distributes, corresponds respectively to a plurality of different sound channels, like loud speaker 1-N among Fig. 1.Wherein, the loud speaker 1-N in the module of raising one's voice 160 is corresponding sound channel 1-N respectively, is promoted by the amplifirer 1-N in the power amplifier module 150 respectively.
Audio signal distribution module 140 is used for distributing the amplifirer 1-N of audio signal to power amplifier module 150, thereby drives the loud speaker 1-N sounding that amplifirer 1-N promotes corresponding sound channel.In other execution mode of the present invention, audio signal distribution module 140 also comprises the preparatory amplifying unit of audio signal, is used for the audio signal of audio decoder module 120 outputs is amplified in advance.
Fig. 2 is the sketch map of a kind of execution mode of the module 160 of raising one's voice in the stereo audio system 100 provided by the invention.As shown in Figure 2, the module of raising one's voice in the stereo audio system 100 160 comprise the preposition array 161 of raising one's voice, the postposition that are arranged at around the user raise one's voice array 162, a left side put raise one's voice array 163 and rightly put the array 164 of raising one's voice, be arranged at the user top on put the array 165 of raising one's voice.Wherein, raise one's voice array 162, a left side of the preposition array 161 of raising one's voice, postposition put raise one's voice array 163 and the right side and put the array 164 of raising one's voice and be square and be distributed in around the user, on put the array 165 of raising one's voice be arranged at the user directly over.In this execution mode, on put the array 165 of raising one's voice for circular.A plurality of loud speaker 1-N in the module of raising one's voice 160 be distributed in the preposition array 161 of raising one's voice, postposition raise one's voice array 162, a left side put the array 163 of raising one's voice, the right side put raise one's voice array 164 and on put in the array 165 of raising one's voice, promote by a plurality of amplifirer 1-N in the power amplifier module 150 respectively.
In this execution mode, the program source module 110 in the stereo audio system 100 is extracted sound source signal and is exported audio decoder module 120 to and central processing unit 130 from program source.Audio decoder module 120 decoding sound source signals also output to audio signal distribution module 140.Central processing unit 130 is dispensed to a plurality of amplifirers in the power amplifier module 150 according to the original acoustic field signal control audio signal distribution module 140 in the sound source signal with audio signal, thereby drives a plurality of amplifirers loud speaker sounding of corresponding sound channel in the array of respectively raising one's voice in the module 160 that promotes to raise one's voice.Because the preposition array 161 of raising one's voice, postposition are raised one's voice array 162, a left side put the array 163 of raising one's voice, the right side put the array 164 of raising one's voice be square be distributed in around the user, on put the array 165 of raising one's voice and be arranged at the user top; Therefore the range of voice of stereo audio system 100 comprise around the user, the sky, thereby farthest build the better stereophonic field of effect.Simultaneously; A plurality of amplifirers in the central processing unit 130 control power amplifier modules 150 a plurality of loud speaker independence sounding in the module 160 that promote respectively to raise one's voice; Make stereophonic field link up more, linear, thereby reduce complicated source of sound or motion source of sound in the program source better.
Fig. 3 is the sketch map of the another kind of execution mode of the module 160 of raising one's voice in the stereo audio system 100 provided by the invention.As shown in Figure 3, the module of raising one's voice in the stereo audio system 100 160 comprise annular raise one's voice array 161 and on put the array 162 of raising one's voice.Wherein, the ring-type array 161 of raising one's voice is arranged at around the user, on put the array 162 of raising one's voice be arranged at the user directly over.In this execution mode, ring-type raise one's voice array 161 and on put the array 162 of raising one's voice for circular.Loud speaker 1-N in the module of raising one's voice 160 be distributed in ring-type raise one's voice array 161 and on put in the array 162 of raising one's voice, promote by the amplifirer 1-N in the power amplifier module 150 respectively.
In this execution mode, the program source module 110 in the stereo audio system 100 is extracted sound source signal and is exported audio decoder module 120 to and central processing unit 130 from program source.Audio decoder module 120 decoding sound source signals also output to audio signal distribution module 140.Central processing unit 130 is dispensed to a plurality of amplifirers in the power amplifier module 150 according to the original acoustic field signal control audio signal distribution module 140 in the sound source signal with audio signal, thereby drives a plurality of amplifirers loud speaker sounding of corresponding sound channel in the array of respectively raising one's voice in the module 160 that promotes to raise one's voice.Because ring-type is raised one's voice array 161 be arranged at around the user, on put the array 162 of raising one's voice and be arranged at the user top, so the range of voice of stereo audio system 100 comprises around the user, the sky, thereby farthest builds real stereophonic field.In addition, because ring-type is raised one's voice array for circular among Fig. 3, its sound channel distributes and raises one's voice than the preposition array 161 of raising one's voice, postposition among Fig. 2 that array 162, a left side are put the array 163 of raising one's voice, square more even that the array 164 of raising one's voice constitutes put on the right side.Therefore, the stereophonic field effect of the execution mode of the module 160 of raising one's voice shown in Figure 3 is superior to Fig. 2.Simultaneously; A plurality of amplifirers in the central processing unit 130 control power amplifier modules 150 a plurality of loud speaker independence sounding in the module 160 that promote respectively to raise one's voice; Make stereophonic field link up more, linear, thereby reduce complicated source of sound or motion source of sound in the program source better.
Fig. 4 is the circuit module sketch map of audio-visual equipment 200 provided by the invention.As shown in Figure 4, stereo audio-visual equipment 200 comprises program source module 210, audio decoder module 220, central processing unit 230, audio signal distribution module 240, power amplifier module 250, loudspeaker module 260, video decode module 270 and video display 280.Wherein, program source module 210 shown in Figure 4, audio decoder module 220, central processing unit 230, audio signal distribution module 240, power amplifier module 250 and loudspeaker module 260 constitute stereo audio system 100 as shown in Figure 1, so no longer repeat.Program source module 210 shown in Figure 4 is with the difference of program source module 110 shown in Figure 1: program source module 210 also is used for extracting looking source signal and exporting video decode module 270 to of program source.Video decode module 270 be used to the to decode vision signal of program source module 210 outputs and outputting video signal to video display 280.Video display 280 is according to the vision signal display video of video decode module 270 outputs, thereby the cooperation stereo audio system is built the audiovisual service of stereophonic field better effects if for the user.
Stereo audio system provided by the invention and audio-visual equipment; Promote to be arranged at the loud speaker of corresponding sound channel in user top and the array of raising one's voice all around through a plurality of independently amplifirers of central processing unit control; Thereby build the better stereophonic field of effect, and make stereophonic field coherent, linear.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (10)
1. a stereo audio system is characterized in that, comprising:
The program source module is used for extracting the sound source signal of program source and looks source signal, and exports said sound source signal and look source signal;
The audio decoder module, the said sound source signal that is used to decode, and output audio signal;
The module of raising one's voice, comprise be arranged at the user top and around a plurality of loud speakers, correspond respectively to a plurality of different sound channels;
Power amplifier module comprises a plurality of separate amplifirers, is used for promoting respectively a plurality of loud speakers of the said module of raising one's voice;
The audio signal distribution module is used for distributing a plurality of amplifirers of said audio signal to said power amplifier module, thereby drives the loud speaker sounding that amplifirer promotes corresponding sound channel;
Central processing unit is used for controlling said audio signal distribution module according to the original acoustic field signal of said sound source signal.
2. stereo audio system according to claim 1 is characterized in that, said audio decoder module also comprises:
Volume control unit is used to regulate the volume of said audio signal;
The tone regulon is used to regulate the tone of said audio signal.
3. stereo audio system according to claim 1 is characterized in that, said power amplifier module comprises efficient D class A amplifier A.
4. stereo audio system according to claim 1 is characterized in that, said audio signal distribution module also comprises the preparatory amplifying unit of audio signal, is used for said audio signal is amplified in advance.
5. stereo audio system according to claim 1; It is characterized in that, the said module of raising one's voice comprise be arranged at user top on put the array of raising one's voice, be arranged at raise one's voice array, a left side of the preposition array of raising one's voice, postposition around the user and put raise one's voice array and the right side and put the array of raising one's voice.
6. stereo audio system according to claim 1 is characterized in that, raise one's voice array, a left side of the said preposition array of raising one's voice, postposition put raise one's voice array and the right side and put the array of raising one's voice and be square and be distributed in around the user.
7. the stereo audio system of stating according to claim 5 is characterized in that, puts the array of raising one's voice on said for circular.
8. stereo audio system according to claim 1 is characterized in that, the said module of raising one's voice is divided into:
On put the array of raising one's voice, be arranged at user top;
The ring-type array of raising one's voice is arranged at around the user.
9. the stereo audio system of stating according to Claim 8 is characterized in that, puts raise one's voice display and ring-type on said and raises one's voice array for circular.
10. an audio-visual equipment is characterized in that, comprising:
According to any described stereo audio system in the claim 1 to 9, the program source module in the said stereo audio system also is used for extracting the source signal of looking of said program source, and exports the said source signal of looking;
The video decode module, the said source signal of looking that is used to decode, and outputting video signal;
Video display is used for according to said vision signal display video.
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| CN201010501150.2A CN102447996B (en) | 2010-10-09 | 2010-10-09 | A kind of stereo audio system and audio-visual equipment |
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| CN201010501150.2A CN102447996B (en) | 2010-10-09 | 2010-10-09 | A kind of stereo audio system and audio-visual equipment |
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| CN102447996B CN102447996B (en) | 2015-08-19 |
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| CN103269477A (en) * | 2013-03-28 | 2013-08-28 | 王勇 | Air voice sound field control method and system for implementing same |
| CN106060726A (en) * | 2016-06-07 | 2016-10-26 | 微鲸科技有限公司 | Panoramic loudspeaking system and panoramic loudspeaking method |
| CN107371108A (en) * | 2017-08-28 | 2017-11-21 | 四川湖山电器有限责任公司 | A kind of multi-channel speaker system and equipment |
| CN107580275A (en) * | 2016-07-04 | 2018-01-12 | 深圳富泰宏精密工业有限公司 | Volume control circuit and method |
| CN108574873A (en) * | 2017-03-07 | 2018-09-25 | 汤姆逊许可公司 | Household audio and video system equipment |
| CN112261188A (en) * | 2020-10-23 | 2021-01-22 | 维沃移动通信有限公司 | Electronic device, sound field adjusting method, and sound field adjusting apparatus |
| WO2024050880A1 (en) * | 2022-09-08 | 2024-03-14 | 瑞声科技（南京）有限公司 | Audio playing method, vehicle-mounted audio system and storage medium |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103269477A (en) * | 2013-03-28 | 2013-08-28 | 王勇 | Air voice sound field control method and system for implementing same |
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| CN107371108A (en) * | 2017-08-28 | 2017-11-21 | 四川湖山电器有限责任公司 | A kind of multi-channel speaker system and equipment |
| CN112261188A (en) * | 2020-10-23 | 2021-01-22 | 维沃移动通信有限公司 | Electronic device, sound field adjusting method, and sound field adjusting apparatus |
| WO2024050880A1 (en) * | 2022-09-08 | 2024-03-14 | 瑞声科技（南京）有限公司 | Audio playing method, vehicle-mounted audio system and storage medium |
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