CN202352338U - Vehicular sound system - Google Patents
Vehicular sound system Download PDFInfo
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- CN202352338U CN202352338U CN 201120449965 CN201120449965U CN202352338U CN 202352338 U CN202352338 U CN 202352338U CN 201120449965 CN201120449965 CN 201120449965 CN 201120449965 U CN201120449965 U CN 201120449965U CN 202352338 U CN202352338 U CN 202352338U
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Abstract
The utility model discloses a vehicular sound system, which is provided with a plurality of digital sound source interfaces capable of receiving a plurality of digital sound sources, an analogue switch provided with a plurality of input ends and capable of receiving a plurality of analogue sound sources, and multi-path sound sources through coordinate control function of a processor and a sound source codec, particularly, after decoding received digital sound sources, the processor selects a path of decoding sound source and outputs the decoding sound source to an audio codec; the decoding sound source is subjected to digital-analogue conversion and volume control through the audio codec and then output to the analogue switch; the analogue sound sources can be directly input to the analogue switch; the analogue switch has the function of alternatively outputting audio frequency; the mixed output phenomenon of the multi-path sound sources can be avoided; only one path of sound source output at the same time is realized; after carrying out power amplification of the received sound sources, playing equipment plays the sound sources; therefore, the vehicular sound system disclosed by the utility model can support ordered and reliable playing of a plurality of complex sound sources.
Description
Technical field
The application relates to the mobile unit technical field, particularly relates to a kind of car audio system.
Background technology
Present car audio system function ratio is more single, can only support the source of sound of only a fews such as radio and CD/VCD.Along with development of science and technology, audiogenic device becomes increasingly complex, such as; More complicated sources of sound such as sound signal of the audiogenic device of USB interface, bluetooth handsfree conversation, still, present car audio system can not be supported these multiple audiogenic devices; Obviously; Present car audio system utilization factor is very low, far can not satisfy people's demand, is badly in need of a kind of car audio system of multiple complicated source of sound of can supporting and satisfies the demand of people's the different sources of sound of broadcast.
The utility model content
For solving the problems of the technologies described above, the application embodiment provides a kind of car audio system, and to realize supporting all complicated audiogenic devices, technical scheme is following:
A kind of car audio system comprises: a plurality of digital tone source interfaces, processor, source of sound coder, analog switch, playback equipment, wherein:
Said digital tone source interface links to each other with the input end of said processor;
The output terminal of said processor links to each other with the digital interface of said source of sound coder, and this processor is used for that the digital tone source that receives is carried out decoding processing and obtains the source of sound of decoding, and offers said source of sound coder;
The output terminal of said source of sound coder links to each other with an input end of said analog switch; This source of sound coder is used for said decoding source of sound is carried out digital-to-analog conversion; And this decoding source of sound is carried out volume control, obtain simulating sound source signal and offer said analog switch;
The output terminal of said analog switch connects said playback equipment, is used for selecting one tunnel simulation source of sound of the multi-channel analog source of sound that a plurality of input ends receive to export said playback equipment to;
Said playback equipment is used to play the simulation source of sound that receives.
Preferably, said source of sound coder also comprises: at least one analog interface after being used for receiving the simulation source of sound and carrying out volume control, offers said analog switch.
Preferably, said digital tone source interface comprises: towards multimedia system transmissions MOST interface, Ethernet interface, safe digital card SD card, conventional data bus USB interface.
Preferably, above-mentioned car audio system also comprises: the GPS module; Be used for the GPS navigation sound signal is offered said processor; Wherein, this GPS module is embedded in the said car audio system, and is connected the input end of said processor; Perhaps, this GPS module links to each other with the input end of said processor through said digital tone source interface.
Preferably, above-mentioned car audio system also comprises: DVD equipment and receiver circuit module.
Preferably, above-mentioned car audio system also comprises: Bluetooth circuit module, the simulated audio signal when being used to receive the bluetooth handsfree conversation.
Preferably, above-mentioned car audio system also comprises: the 3G circuit module is used to receive the 3G network sound signal.
Preferably, said playback equipment comprises: power amplifier and loudspeaker, wherein:
Said power amplifier links to each other with the output of said analog switch, and said loudspeaker links to each other with said power amplifier.
Preferably, above-mentioned car audio system also comprises: with the echo processor that said Bluetooth circuit module is connected, and the echo signal of the simulated audio signal when being used for eliminating the bluetooth handsfree conversation.
Preferably, said analog switch comprises: stereo analog input interface, switch output to the stereo simulating signal that receives.
Technical scheme by above the application embodiment provides is visible; This car audio system; Comprise a plurality of digital tone source interfaces, after processor carries out decoding processing with the digital tone source that receives, and select one tunnel decoding source of sound to export audio codec to; Undertaken being delivered to analog switch after digital-to-analog conversion, the volume control by audio codec; The simulation source of sound can be directly inputted into said analog switch, and analog switch has the function of selecting an output audio, avoids the multichannel source of sound to mix the generation of the phenomenon of output.Playback equipment carries out playing after the power amplification to the source of sound that receives, and this car audio system can support multiple complicated source of sound to play reliably in order.
Description of drawings
In order to be illustrated more clearly in the application embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment that put down in writing among the application, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 a is the structural representation of a kind of car audio system of the application embodiment;
Fig. 1 b is the structural representation of the another kind of car audio system of the application embodiment;
Fig. 2 is the structural representation of the another kind of car audio system of the application embodiment.
Embodiment
In order to make those skilled in the art person understand the technical scheme among the application better; To combine the accompanying drawing among the application embodiment below; Technical scheme among the application embodiment is carried out clear, intactly description; Obviously, described embodiment only is the application's part embodiment, rather than whole embodiment.Based on the embodiment among the application, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all should belong to the scope of the application's protection.
See also the structural representation of the car audio system shown in Fig. 1 a, this car audio system mainly comprises: a plurality of digital tone source interface 1, processor 2, source of sound coder 3, analog switch 4, playback equipment 5, wherein:
A plurality of said digital tone source interfaces 1 link to each other with the different input port of processor 2 respectively; The output port of processor 2 links to each other with the digital input port of source of sound coder 3; The output terminal of source of sound coder 3 connects an input end of said analog switch 4; Other input ends of analog switch 4 can connect analog interface, and connect the simulation audiogenic device through said analog interface.The output terminal of analog switch 4 connects playback equipment 5, and playback equipment 5 is used to play the audio frequency that receives.
Said digital tone source equipment comprises: MOST (Media Oriented System Transport; Towards multimedia system transmissions), Ethernet, SD (Secure Digital Memory Card; Safe digital card) card, USB device; Wherein, said MOST and Ethernet receive the external digital voice data through transceiver, and SD card and USB device internal memory contain digital audio-frequency data.
Need to prove that the car audio system that present embodiment provides can pass through above-mentioned whole digital tone source equipment, also can realize that the application does not limit this through above-mentioned part digital tone source equipment.
Preferably; Car audio system in the foregoing description also comprises; GPS (Global Positioning System, GPS) module 10, and simulation sounding circuits such as Bluetooth circuit module 12,3G circuit module 11, DVD equipment 13 and receiver circuit module 14.
Concrete, shown in Fig. 1 a, said GPS module 10 can be integrated in this car audio system, directly links to each other with processor 2, and the GPS navigation sound signal is offered said processor 2.
Shown in Fig. 1 b, GPS module 10 can also be connected on the said processor 2 through digital tone source interface 1, i.e. this moment, GPS module 10 is external GPS equipment.Simulated audio signal when said Bluetooth circuit module 12 is used to receive the bluetooth handsfree conversation;
Said 3G circuit module 11 is used to receive the 3G network sound signal;
Said DVD equipment 13 is integrated in this car audio system, is used to discern CD and DVD and then plays.
Four circuit modules all have volume control function in said Bluetooth circuit module 12,3G circuit module 11, DVD equipment 13 and the receiver circuit module 14, so can be connected directly on two input ends of analog switch 4.
The course of work of this car audio system is following:
Digital tone source equipment is connected on the digital tone source interface 1; And digital tone source offered processor 2, this digital tone source that 2 pairs of processors receive carries out decoding processing, obtains digital signal I2S (Inter-IC Sound; The audio data transmission bus standard) the decoding source of sound of form; And offering said audio codec 3, the decoding source of sound that 3 pairs of audio codecs receive carries out digital-to-analog conversion, and the source of sound that receives is carried out volume control; Export one road source of sound at last and offer said analog switch 4, select one road source of sound to offer playback equipment 5 through analog switch 4 again and play.
The car audio system that present embodiment provides; Have a plurality of digital tone source interfaces; Can receive multiple digital tone source, analog switch has a plurality of input ends can receive multiple simulation source of sound, and the multichannel source of sound is through the coordination control action of processor and source of sound coder; Avoid the multichannel source of sound to mix the generation of the phenomenon of output, realized having only the output of one road source of sound.Therefore, this car audio system can support multiple complicated source of sound to play reliably in order.
See also Fig. 2, show the structural representation of the another kind of car audio system of present embodiment, different with the corresponding embodiment of Fig. 1 a is that said audio codec 3 also comprises at least one analog interface 32.
Because audio codec 3 has volume adjusting function, when not having volume adjusting function in the said simulation audiogenic device, need be connected on the analog interface of this audio codec 3.
Present embodiment is connected the analog interface 32 of said audio codec 3 with DVD equipment 13, and the input end that receiver circuit module 14, Bluetooth circuit module 12,3G circuit module 11 are connected analog switch 4 is that example describes.
Digital tone source offers processor through digital tone source interface 1 with digital audio and video signals; Processor carries out decoding processing to DAB; The digital signal of output I2S form, the digital interface 31 of audio codec 3, the digital signal of receiving processor output; Analog interface 32 can receive the simulated audio signal of DVD; And after can carrying out volume control to the sound signal that receives, exporting the first input end 41 of said analog switch 4 to, analog switch 4 also has other three input ends; Second input end 42 receives the radio audio frequency, the 3rd input end 43 receives Bluetooth audio frequency signal, four-input terminal 44 reception 3G network sound signals, and output terminal is exported one road simulated audio signal and offered said playback equipment.
Preferably, the car audio system that present embodiment provides also comprises: the echo processing module 6 that links to each other with bluetooth equipment offers analog switch 4 after being used for eliminating the echo signal of bluetooth handsfree conversation.Said 3G network audio frequency apparatus set inside has the echo processing module, eliminates the echo signal in the sound signal.
Said analog switch 4 plays the function that source of sound switches, and the source of sound module that the on-vehicle host incision is different is opened different audiogenic devices, and passes through the break-make of this analog switch of processor control, controls special modality output, thereby realizes the switching of source of sound.The via resistance of analog switch 4 is very little, can not influence the amplitude of sound signal basically.
Preferably; In order to realize effective utilization, can two-way monophony source of sound be inputed to the same input end of analog switch 4, by which the source of sound output in processor 2 these two-way monophony sources of sound of decision output to analog switch 4; And the playback equipment 5 that this road source of sound flows to back level is play through analog switch 4; Simultaneously, close another road source of sound, thereby guarantee that synchronization only has the output of one road source of sound.
In addition, analog switch 4 also has stereo analog input interface, and the stereo simulating signal that receives is switched output.Concrete, each stereo analog input interface has two incoming lines, and an incoming line input has the source of sound of L channel, the source of sound that another root incoming line input has R channel.Wherein, Every incoming line can be used as the input end of monophony source of sound, like this, can two-way monophony source of sound be inputed to same incoming line; Open monophony source of sound to be exported through processor 2; Thereby from analog switch output, close another road monophony source of sound simultaneously, realize that synchronization only has the output of one road source of sound.
Can also be with two incoming lines of stereo analog input interface as two monophony input ends; Every incoming line has been imported two monophony sources of sound simultaneously; Two incoming lines have four tunnel monophony sources of sound, and a road in processor 2 controls four tunnel monophony sources of sound are opened and from analog switch 4 outputs, closed other three tunnel monophonys sources of sound simultaneously; Realize that synchronization only has one tunnel monophony source of sound, the input channel of having practiced thrift analog switch greatly.Said audio codec 3 has volume adjusting function, and is concrete, and when user's turn volume knob was regulated the volume of source of sound, these audio codec 3 inner register parameters values of said processor 2 controls were accomplished volume and regulated.
Preferably, said audio codec 3 is also supported microphone input and earphone output.
Said playback equipment 5 comprises power amplifier 51 and loudspeaker 52, and power amplifier 51 is used for said simulated audio signal is carried out power amplification, and then the loudspeaker 52 of level carries out sounding after promoting.And, the wide dynamic range of said power amplifier 51, distortion rate is little, and the frequency band range of said loudspeaker 52 is wide, reproduction that can sound is complete.
Concrete, when source of sound to be play was digital tone source, processor 2 received said digital audio and video signals and carries out decoding processing; The outputting digital audio signal, simultaneously, the digital interface of the said audio codec 3 of processor 2 controls is opened; The digital interface of audio codec 3 receives said digital audio and video signals, converts this digital audio and video signals into simulating signal, and after carrying out volume control; Flow to analog switch 4; Analog switch 4 receives the said on-off circuit conducting of treating playing audio signal, will treat that playing audio signal flows to said playback equipment, is play by playback equipment 5.
When treating that audio plays is the DVD simulated audio signal; The analog interface of processor 2 control audio coders 3 is opened and is received said DVD simulated audio signal; Carry out this simulating signal of volume control back output to said analog switch 4; Receive the on-off circuit conducting of this DVD simulated audio signal in the analog switch 4, export this DVD simulated audio signal to said playback equipment 5.
In the present embodiment, the radio that is connected with analog switch 4, bluetooth or 3G simulation audiogenic device self have volume adjusting function.Therefore, when treating audio plays for this reason during the simulated audio signal among the three, the on-off circuit conducting that links to each other with sound signal to be play in the analog switch 4 makes this treat that playing audio signal exports said playback equipment to and plays.
Need to prove that present embodiment only is a preferred embodiment, said audio codec can also comprise a plurality of analog interfaces, connects a plurality of simulation sources of sound respectively.
Present embodiment makes this car audio system can support multiple source of sound through processor, audio codec and analog switch; Multiple source of sound can be play in order reliably; Reach the result of broadcast of sound equipment, meet consumers' demand, improved the utilization factor of car audio system.
Each embodiment in this instructions all adopts the mode of going forward one by one to describe, and identical similar part is mutually referring to getting final product between each embodiment, and each embodiment stresses all is the difference with other embodiment.
The above only is the application's a embodiment; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the application's principle; Can also make some improvement and retouching, these improvement and retouching also should be regarded as the application's protection domain.
Claims (10)
1. a car audio system is characterized in that, comprising: a plurality of digital tone source interfaces, processor, source of sound coder, analog switch, playback equipment, wherein:
Said digital tone source interface links to each other with the input end of said processor;
The output terminal of said processor links to each other with the digital interface of said source of sound coder, and this processor is used for that the digital tone source that receives is carried out decoding processing and obtains the source of sound of decoding, and offers said source of sound coder;
The output terminal of said source of sound coder links to each other with an input end of said analog switch; This source of sound coder is used for said decoding source of sound is carried out digital-to-analog conversion; And this decoding source of sound is carried out volume control, obtain simulating sound source signal and offer said analog switch;
The output terminal of said analog switch connects said playback equipment, is used for selecting one tunnel simulation source of sound of the multi-channel analog source of sound that a plurality of input ends receive to export said playback equipment to;
Said playback equipment is used to play the simulation source of sound that receives.
2. car audio system according to claim 1 is characterized in that, said source of sound coder also comprises: at least one analog interface after being used for receiving the simulation source of sound and carrying out volume control, offers said analog switch.
3. car audio system according to claim 1 is characterized in that, said digital tone source interface comprises: towards multimedia system transmissions MOST interface, Ethernet interface, safe digital card SD card, conventional data bus USB interface.
4. car audio system according to claim 1 is characterized in that, also comprises: the GPS module; Be used for the GPS navigation sound signal is offered said processor; Wherein, this GPS module is embedded in the said car audio system, and is connected the input end of said processor; Perhaps, this GPS module links to each other with the input end of said processor through said digital tone source interface.
5. car audio system according to claim 1 is characterized in that, also comprises: DVD equipment and receiver circuit module.
6. car audio system according to claim 1 is characterized in that, also comprises: Bluetooth circuit module, the simulated audio signal when being used to receive the bluetooth handsfree conversation.
7. car audio system according to claim 1 is characterized in that, also comprises: the 3G circuit module is used to receive the 3G network sound signal.
8. car audio system according to claim 1 is characterized in that, said playback equipment comprises: power amplifier and loudspeaker, wherein:
Said power amplifier links to each other with the output of said analog switch, and said loudspeaker links to each other with said power amplifier.
9. car audio system according to claim 1 is characterized in that, also comprises: with the echo processor that said Bluetooth circuit module is connected, and the echo signal of the simulated audio signal when being used for eliminating the bluetooth handsfree conversation.
10. car audio system according to claim 1 is characterized in that, said analog switch comprises: stereo analog input interface, switch output to the stereo simulating signal that receives.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120449965 CN202352338U (en) | 2011-11-14 | 2011-11-14 | Vehicular sound system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120449965 CN202352338U (en) | 2011-11-14 | 2011-11-14 | Vehicular sound system |
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| Publication Number | Publication Date |
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| CN202352338U true CN202352338U (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201120449965 Expired - Lifetime CN202352338U (en) | 2011-11-14 | 2011-11-14 | Vehicular sound system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103686536A (en) * | 2013-12-04 | 2014-03-26 | 王波兰 | Multi-identical-type-audio-data-interface sound equipment |
| CN104883641A (en) * | 2014-02-28 | 2015-09-02 | 维沃移动通信有限公司 | Mobile terminal of realizing high fidelity music play |
| CN106229002A (en) * | 2016-08-12 | 2016-12-14 | 乐视控股（北京）有限公司 | A kind of audio playing apparatus for automobile, method and automobile |
| CN108174327A (en) * | 2018-01-26 | 2018-06-15 | 泉州市琪祥电子科技有限公司 | A kind of controllable dual-channel audio power amplifier |
-
2011
- 2011-11-14 CN CN 201120449965 patent/CN202352338U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103686536A (en) * | 2013-12-04 | 2014-03-26 | 王波兰 | Multi-identical-type-audio-data-interface sound equipment |
| CN104883641A (en) * | 2014-02-28 | 2015-09-02 | 维沃移动通信有限公司 | Mobile terminal of realizing high fidelity music play |
| WO2015127832A1 (en) * | 2014-02-28 | 2015-09-03 | 维沃移动通信有限公司 | Mobile terminal for realizing high-fidelity music playback |
| CN106229002A (en) * | 2016-08-12 | 2016-12-14 | 乐视控股（北京）有限公司 | A kind of audio playing apparatus for automobile, method and automobile |
| CN108174327A (en) * | 2018-01-26 | 2018-06-15 | 泉州市琪祥电子科技有限公司 | A kind of controllable dual-channel audio power amplifier |
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| C14 | Grant of patent or utility model | ||
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Address after: 4 / F, building 1, No.14 Jiuxianqiao Road, Chaoyang District, Beijing 100020 Patentee after: Beijing Jingwei Hirain Technologies Co.,Inc. Address before: 100101 Beijing Chaoyang District City Anxiang Beili 11 building B block 8 layer Patentee before: Beijing Jingwei HiRain Technologies Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
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Granted publication date: 20120725 |