CN202918482U - Vehicle-mounted Dolby surround sound playing device - Google Patents
Vehicle-mounted Dolby surround sound playing device Download PDFInfo
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- CN202918482U CN202918482U CN 201220522372 CN201220522372U CN202918482U CN 202918482 U CN202918482 U CN 202918482U CN 201220522372 CN201220522372 CN 201220522372 CN 201220522372 U CN201220522372 U CN 201220522372U CN 202918482 U CN202918482 U CN 202918482U
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- vehicle
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- dolby surround
- audio
- surround sound
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Abstract
The utility model relates to a sound playing device, especially to a vehicle-mounted Dolby surround sound playing device. The vehicle-mounted Dolby surround sound playing device aims at solving the problem that to bring Dolby surround sound effects, a prior vehicle-mounted Dolby 5.1 sound-channel sound playing device requires that played sound is separately stored in independent sound channels in specific compression formats of each sound channel when the sound is recorded initially. According to the utility model, a digital sound processing integrated circuit M65857 is used to process common left/right double-track sounds and convert the same to generate Dolby 5.1 channel sound effects, so that people can enjoy wonderful audio feelings brought by the Dolby sound effect in the journey.
Description
Technical field
The utility model relates to a kind of audio player, relates in particular to a kind of vehicle-mounted Dolby Surround sound effect player.
Background technology
In today that society develops rapidly, people's radius of action expanding day, automobile have developed into popular walking-replacing tool gradually, and we are also more and more longer the time onboard, and people also more and more pay attention to the quality of vehicle audio tonequality.Because the development of Audiotechnica and people are to the pursuit of high-quality life, traditional dual track system gradually slowly fade out, present 5.1 sound channel sound effect processing systems are more perfect audio-visual solutions, can bring audiovisual impression on the spot in person to people.5.1 sound channel is by the exploitation of Doby company, so be called again " Doby 5.1 sound channels ".The ambiophonic system that Doby provides adds a subwoofer sound channel by five full frequency-domain sound channels and forms, so be known as 5.1 sound channels.Five sound channels comprise " the left surround channel " and " right surround channel " of preposition " L channel ", " center channels ", " R channel ", postposition.The frequency range of these sound channels is full frequency-domain response 3-20000Hz.The 6th sound channel namely subwoofer sound channel comprised some extra bass information, so that some scenes are such as the better effects if of blast, strike note etc.Because the frequency response of this sound channel is 3-120Hz, so claim " .1 " sound channel.The audio player of at present vehicle use, mostly only has left and right sides dual-channel audio output, early not satisfy people to the pursuit of high tone quality, and only have the vehicle boarded acoustics of minority can bring the acoustics of Doby 5.1 sound channels, but the audio frequency that this matching requirements is play is in initial recording process, each sound channel must be used specific compression format carry out the storage of separate type separate channels, then just can carry out the output of 5.1 sound channels, this has limited the development of vehicle-mounted 5.1 sound channel sound equipment Play Systems.
The utility model content
The utility model purpose provides a kind of vehicle-mounted Dolby Surround sound effect player, require former audio carrier in recording process in order to solve existing vehicle-mounted 5.1 sound channel vehicle audio decode systems, must use specific compression format to carry out Separate Storage main sound channel, center channels, rearmounted sound channel and subwoofer sound channel, then could export Doby 5.1 sound channels around audio.This is so that traditional vehicle-mounted Doby 5.1 sound channel sound systems have certain conditional request to audio plays, this has not only limited the development of vehicle-mounted 5.1 sound channel Dolby Surround sound effect players, simultaneously so that only have a few peoples could enjoy on the road the perfect audiovisual impression that the Doby audio brings.
Above-mentioned purpose of the present utility model is achieved through the following technical solutions:
A kind of vehicle-mounted Dolby Surround sound effect player, described vehicle-mounted Dolby Surround sound effect player comprises: vehicle-mounted audio/video device, sound channel change-over circuit, 3 line communication systems, decoder, single-chip microcomputer, volume balance device, switching device, Doby audio output interface and D/A converting circuit, it is characterized in that described vehicle-mounted Dolby Surround sound effect player is integrated, use be that the special digital audio frequency is processed integrated circuit M65857.
Above-mentioned vehicle-mounted Dolby Surround sound effect player, wherein, described vehicle-mounted audio/video device output audio signal is L channel and R channel.
Above-mentioned vehicle-mounted Dolby Surround sound effect player, wherein, described sound channel change-over circuit signal input port connects described vehicle-mounted audio/video device dual track output interface.
Above-mentioned vehicle-mounted Dolby Surround sound effect player, wherein, the built-in microprocessor of described sound channel change-over circuit connects the control signal output of described single-chip microcomputer.
Above-mentioned vehicle-mounted Dolby Surround sound effect player, wherein, the audio signal that described volume balance device is exported the sound channel change-over circuit is divided into after treatment 6 the tunnel and exports Doby audio output interface to.
Above-mentioned vehicle-mounted Dolby Surround sound effect player, wherein, but described induction switch device is continuous trigger formula switch.
In sum, owing to adopted technique scheme to have following effect:
Can be divided into 6 the tunnel after the left and right sides binaural audio signal of employing ordinary recording is processed by the utility model and export audio interface to, reach 5.1 sound channel Dolby Surround audios, easy to operate, practical, can be widely used in various vehicle audible devices.
Description of drawings
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that the utility model advantage will become.Mark identical in whole accompanying drawings is indicated identical part.Deliberately proportionally do not draw accompanying drawing, focus on illustrating purport of the present utility model.
The structural representation of a kind of vehicle-mounted Dolby Surround sound effect player of the present utility model as shown in Figure 1.
A kind of vehicle-mounted Dolby Surround sound effect player comprises: vehicle-mounted audio/video device 1, sound channel change-over circuit 2,3 line communication systems 4, decoder 5, single-chip microcomputer 6, volume balance device 7, switching device 8, Doby audio output interface 9 and D/A converting circuit 10.
Embodiment:
For technological means that utility model is realized, create feature, reach purpose and effect is easy to understand, lower combination specifically illustrates, and further sets forth the utility model.
The structural representation of a kind of vehicle-mounted Dolby Surround sound effect player of the present utility model as shown in the figure.
A kind of vehicle-mounted Dolby Surround sound effect player of the utility model comprises: vehicle-mounted audio/video device 1, sound channel change-over circuit 2,3 line communication systems 4, decoder 5, single-chip microcomputer 6, volume balance device 7, switching device 8, Doby audio output interface 9 and D/A converting circuit 10, wherein, that described vehicle-mounted Dolby Surround sound effect player mainly uses is digital audio processing integrated circuit M65857.
Embodiment of the present utility model is: 2 road signal output pins connect the dual track output interface of vehicle-mounted audio/video device 1, processing through 3 line communication systems 4 and D/A converting circuit 3, can with simple left and right sides dual track through after changing, export the audio with 5.1 sound channels by Doby audio output interface 9; Touch induction switch device 8, to single-chip microcomputer 6, control the delay of exporting rear left, two sound channels of rear right by single-chip microcomputer 6 and 3 line communication systems 4, in order in limited space, workshop, reach better audio visual effect by decoder 5 signal transmissions.Single-chip microcomputer 6 can pass through its inner expanding device, and self-defined mode around time-delay can be selected circulation pattern or coding mode.Circulation pattern is by touching continuously induction switch device 8, the time-delay state is according to this by 20 milliseconds, 30 milliseconds, 40 milliseconds, 50 milliseconds circulation change, coding mode is the state that changes switch, make 00,01,10 and 11 4 encoding state of 20 milliseconds, 30 milliseconds, 40 milliseconds, the 50 milliseconds corresponding decoders of difference of surround sound delay adjustments in the audio frequency processing procedure, the shock impression that always brings Dolby Surround to delay time and bring to people.
In sum, because the utility model has adopted special audio signal processing integrated circuit M65857, make 5.1 sound channels no longer be confined to the technical limitations of traditional vehicle-mounted Doby 5.1 sound channel playing devices, former audio file need not in recording process main sound channel, center channels, rearmounted sound channel and subwoofer sound channel use specific compression format to carry out Separate Storage, just can bring the Dolby Surround audio, by the utility model common left and right sides dual-channel audio file process being processed is exportable Doby 5.1 channel audio signal, the high tone quality that the more convenient enjoyment Dolby Surround audio of people is brought is enjoyed, and makes journey become joyful.
More than specific embodiment of the utility model is described in detail, but the utility model is not restricted to specific embodiment described above, it is just as example.To those skilled in the art, any equivalent modifications that this technical scheme is carried out and substituting also all among category of the present utility model.Therefore, not breaking away from impartial conversion and the modification of having done under the spirit and scope of the present utility model, all should be encompassed in the scope of the present utility model.
Claims (6)
1. vehicle-mounted Dolby Surround sound effect player, described vehicle-mounted Dolby Surround sound effect player comprises: vehicle-mounted audio/video device, sound channel change-over circuit, 3 line communication systems, decoder, single-chip microcomputer, volume balance device, switching device, Doby audio output interface and D/A converting circuit, it is characterized in that described vehicle-mounted Dolby Surround sound effect player is integrated, use be that the special digital audio frequency is processed integrated circuit M65857.
2. vehicle-mounted Dolby Surround sound effect player according to claim 1 is characterized in that, described vehicle-mounted audio/video device output audio signal is L channel and R channel.
3. vehicle-mounted Dolby Surround sound effect player according to claim 1 is characterized in that, described sound channel change-over circuit signal input port connects described vehicle-mounted audio/video device dual track output interface.
4. vehicle-mounted Dolby Surround sound effect player according to claim 1 is characterized in that, the built-in microprocessor of described sound channel change-over circuit connects the control signal output of described single-chip microcomputer.
5. vehicle-mounted Dolby Surround sound effect player according to claim 1 is characterized in that, the audio signal that described volume balance device is exported the sound channel change-over circuit is divided into after treatment 6 the tunnel and exports Doby audio output interface to.
6. vehicle-mounted Dolby Surround sound effect player according to claim 1 is characterized in that, but described induction switch device is continuous trigger formula switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220522372 CN202918482U (en) | 2012-10-12 | 2012-10-12 | Vehicle-mounted Dolby surround sound playing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220522372 CN202918482U (en) | 2012-10-12 | 2012-10-12 | Vehicle-mounted Dolby surround sound playing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202918482U true CN202918482U (en) | 2013-05-01 |
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ID=48166757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220522372 Expired - Lifetime CN202918482U (en) | 2012-10-12 | 2012-10-12 | Vehicle-mounted Dolby surround sound playing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202918482U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114040316A (en) * | 2021-11-30 | 2022-02-11 | 北京中联合超高清协同技术中心有限公司 | Support three-dimensional sound's rebroadcasting car |
-
2012
- 2012-10-12 CN CN 201220522372 patent/CN202918482U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114040316A (en) * | 2021-11-30 | 2022-02-11 | 北京中联合超高清协同技术中心有限公司 | Support three-dimensional sound's rebroadcasting car |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130501 |