CN1909744A - Vehicle audio system capable of separating output by different sources - Google Patents
Vehicle audio system capable of separating output by different sources Download PDFInfo
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- CN1909744A CN1909744A CN 200510036338 CN200510036338A CN1909744A CN 1909744 A CN1909744 A CN 1909744A CN 200510036338 CN200510036338 CN 200510036338 CN 200510036338 A CN200510036338 A CN 200510036338A CN 1909744 A CN1909744 A CN 1909744A
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Abstract
The invention relates to a sound system of vehicle, which can separated output based on different sources, that the signals of several sound sources can be output by different loudspeakers. And said device comprises: a sound processor for treating several sound signals provided by several sound sources; an analogue convert logic circuit for selecting part of said sound signals to be separated output; and a micro controller for controlling the sound signal treatment of sound processor and the convert operation of analogue convert logic circuit.
Description
Technical field
The invention relates to vehicle audio system, say in more detail, exactly about in the vehicle that is equipped with a plurality of audio-source, a plurality of audio source signals separate output by different loud speakers, can satisfy the multiple requirement of the vehicle person of taking by the vehicle audio system of the separable output of homology not.
Background technology
In general, in the vehicle audio system, video, CD broadcast etc. are installed, two loud speakers are arranged respectively in the front-end and back-end of vehicle, device has the DVD of 5.1 channels to play or receiver (receiver) in vehicle recently, on the basis that loud speaker is arranged now, returning apparatus has central loudspeakers and woofer.
Vehicle audio system is identical with the above, is equipped with video (FM/AM tuner), multiple audio-source such as CD broadcast, DVD broadcast, and each audio-source can independently drive, but the signal by loud speaker output is with regard to one.Such as, open in the video state and to drive CD Player, though video in driving condition, vision signal is with upper speaker output, loud speaker is only exported the CD signal.
That is, vehicle audio system is in the past only exported a kind of audio-source from loud speaker, requires audio frequency output video in the front end loud speaker such as the vehicle person of taking, and when exporting CD in the loud speaker of rear end, can't satisfy this various requirement.
Summary of the invention
The present invention researches and develops for solving top problem, and purpose of the present invention is exactly the selection according to the user, and a plurality of audio source signals can be separated output by loud speaker.
In addition, another object of the present invention is exactly that signal according to user's a plurality of audio-source of selection can separate output with the auxiliary sound output device by loud speaker.
For this reason, provided by the invention can constitute by the different vehicle audio systems that separate output in source comprise: to a plurality of audio signals of providing from a plurality of audio-source sound processing apparatus of acoustic processing in addition; A part in a plurality of audio signals of acoustic processing above selecting, and separate the analog switch logical circuit of exporting; The acoustic processing of the audio signal of said sound processing apparatus and the microcontroller of analog switch logical circuit and conversion operations above the control.
In addition, the invention provides the analog-converted logical circuit, it is to receive audio signal and the DVD5.1 channel audio signal that audio signal, 4 channel audio signals, the auxiliary audio frequency device of equilibrium treatment provide, a kind of audio signal output is to loud speaker in the selection audio signal, perhaps in two kinds of signals of the audio signal of the audio signal of equilibrium treatment, auxiliary audio frequency device and 5.1 channel audio signals, select two kinds of audio signals, loud speaker is exported before and after separating.
In addition, the invention provides the analog-converted logical circuit, it is to receive audio signal and the DVD5.1 channel audio signal that audio signal, 4 channel audio signals, the auxiliary audio frequency device of equilibrium treatment provide, a kind of audio signal output is to loud speaker in the selection audio signal, perhaps select in the audio signal audio signal output to loud speaker, simultaneously in two kinds of signals of the audio signal of the audio signal of equilibrium treatment, auxiliary audio frequency device and 5.1 channel audio signals, select an audio signal, export the auxiliary sound output device to.
The present invention has following effect: just do not export a kind of simple audio signal of a kind of vehicle-mounted loudspeaker, but select multiple audio signal, can separate exporting loud speaker to, satisfy the person's of taking requirement.
Particularly, multiple audio signal is separated and is exported loud speaker and earphone to, and the audio signal different with loud speaker can receive by earphone, so for the person of taking of different interest, selects the signal of oneself requirement, can listen to alone.
Description of drawings
Fig. 1 is the formation schematic diagram according to vehicle audio system of the present invention;
Fig. 2 is that forward end loud speaker and rear end loud speaker are exported the not pie graph of the analog-converted logical circuit of homology audio signal respectively;
Fig. 3 exports the not analog-converted logical constitution figure of homology audio signal respectively to loud speaker and auxiliary sound output device.
Accompanying drawing major part symbol description
10: light picker 20:DVD plays IC
30: sound processing apparatus 31,33: analog switch
32,35: audio equalizer 34: Doby Prologic (dolby pro logic)
36:5.1 Ch ADC 40: analog-converted logical circuit
50: microcontroller 60:FM/AM tuner
70: cd converter (changer) 80: auxiliary port
90: volume IC 100: amplifier
Embodiment
Below with reference to accompanying drawings embodiments of the invention are elaborated.
Fig. 1 is the formation schematic diagram according to the vehicle audio system of the invention process example, and in enforcement example of the present invention, with device the audio system of DVD player being arranged is that example describes.
Same as shown in Figure 1, its formation of vehicle audio system comprises as lower device: the light picker 10 that reads CD signal; Handle the DVD signal, the DVD of output sound and dynamic image plays IC20; Various audio signals are carried out the sound processing apparatus 30 of acoustic processing; Select various audio signals, and separate the analog-converted logical circuit 40 of output through acoustic processing; Control the microcontroller 50 of each inscape operation; The FM/AM tuner 60 that is used for receiving video signals; The optical disk changer (changer) that is used for play CD; Be used to connect the auxiliary terminal 80 of audio devices; Regulate the volume IC90 of audio signal volume; The amplification audio signal, and export the amplifier 100 of loud speaker to.
Light picker 10 is the CD emission laser to rotation, from the signal of reflection, read the data of video disc recording, it is the data Digital Signal Processing in addition that light picker 10 is read reception that DVD plays IC20, be converted to the Voice ﹠ Video signal, video signal converted is sent to outside output device in DVD broadcast IC20, and audio signal inputs to sound processing apparatus 30.
Sound processing apparatus 20 is various signals such as audio signal of DVD being play output in the audio signal that receives in the DVD audio signal changed among the IC20, the FM/AM tuner 60, the cd converter 70, and in addition equilibrium treatment or Dolby Surround sound channel are handled.
Analog-converted logical circuit 40 is the parts in the signal of the auxiliary audio frequency device output that the signal of acoustic processing is connected with auxiliary port 80 in the processing unit 30 of selecting a sound, and separates output.
The audio signal of output inputs to volume IC 90 in the analog-converted logical circuit 40, volume IC 90 regulates the different volume of loud speaker, master volume, speaker balance and volume control, the words of output audio signal, amplifier 100 carries out the amplification signal thus, with audio signal output to vehicle-mounted loudspeaker.
Microcontroller 50 is play the Digital Signal Processing of IC20, the acoustic processing of sound processing apparatus 30, the audio signal selection of analog speakers conversion logic circuit 40 and the volume of volume IC 90 by control DVD and is regulated, and manages the operation of audio system integral body.
Fig. 2 is for loud speaker and back loud speaker are exported respectively the not formation schematic diagram of the analog-converted logical circuit 40 of the audio signal of homology forward.
Among Fig. 2, before the formation and operation of explanation analog-converted logical circuit 40, at first learn about sound processing apparatus 30.Sound processing apparatus 30 is audio signals that the FM/AM tuner 60, cd converter 70 and the DVD that receive input plays, and in addition equilibrium treatment or Dolby Surround sound channel are handled with this signal.On constituting, see and comprise: the 1st analog switch 31 of selecting the audio signal of equilibrium treatment as lower device; Select the 2nd analog switch 33 of the audio signal of surround channel processing; To the signal of output in the 1st analog switch 31 the 1st audio equalizer 32 of equilibrium treatment in addition; To the signal of output in the 2nd analog switch 33 Doby Prologic 34 that handles of surround channel in addition; Conversion of signals with digital processing among the DVD broadcast IC20 is the 5.1Ch DAC36 of analog signal; The 5.1CH audio signal is carried out the 2nd audio equalizer 35 of equilibrium treatment.
In the signal that the 1st analog switch 31 and the 2nd analog switch 33 are exported in the signal of the signal of FM/AM tuner 60 and cd converter 70 and 5.1CH DAC36 in two signals, select one, and export it to the 1st audio equalizer 32 and Doby Prologic34 respectively.In addition, export that 4 signals are sent to the 2nd audio equalizer 35 in the signal of 5.1CH DAC36 to, two remaining signals are sent to analog-converted logical circuit 40.
The conversion of signals of importing the 1st audio equalizer 32 is for having multiple acoustic form, and inputs to analog-converted logical circuit 40.The conversion of signals of input Doby Prologic34 is 4 channel signals, inputs to analog-converted logical circuit 40.In addition, 4 signals that input to the 2nd audio equalizer 35 also are converted to has multiple acoustic form, inputs to analog-converted logical circuit 40.
With the audio signal of carrying out acoustic processing in the sound processing apparatus of last identical formation with auxiliary audio frequency device that auxiliary port 80 is connected in the signal exported input to analog logic circuit 40, analog logic circuit 40 is carried out and is used for forwards, backwards loud speaker and exports the not conversion operations of homology audio signal respectively, and the control of this separation output conversion operations is undertaken by panel microcontroller 50.
Analog-converted logical circuit 40 is made of a plurality of analog switches that are connected with each loudspeaker audio signal (1.-5.).Same as shown in Figure 2, the output port of analog-converted logical circuit 40 is connected with a preceding left side (FL) loud speaker, the preceding right side (FR) loud speaker, a left side, back (SL) loud speaker, right (SR) loud speaker in back, central loudspeakers, woofer, by with the operation of a plurality of analog switches of analog-converted logical circuit 40, audio signal is sent to each loud speaker.
Analog-converted logical circuit 40 receives the audio signal of sound processing apparatus 30 equilibrium treatment and the 4 channel audio signals that the Dolby Surround sound channel is handled, the DVD5.1 channel audio signal that audio signal that the auxiliary audio frequency device that reception auxiliary port 80 connects provides and DVD player provide, an audio signal above only selecting in the audio signal, export loud speaker to, the perhaps audio signal of said equilibrium treatment in the above, in two signals of the audio signal of auxiliary audio frequency device and 5.1 channel audio signals, select two audio signals, separate exporting the front-end and back-end loud speaker to.
Only select an audio signal, export under the situation of loud speaker, single or the stereophonic signal of FM/AM tuner 60,2 channel signals of cd converter 70 and auxiliary port 80 are exported in a left side/back left speaker and the preceding right side/right loud speaker in back simultaneously in the past, the words that dolby surround stereo is handled, be converted to 4 channel signals, export in the central loudspeakers on a left side, the preceding right side, the right side, a left side/back, back in the past.Simultaneously 5.1 channel audio signals respectively in the past left speaker, preceding right loud speaker, the right loud speaker of back left speaker and back, and central loudspeakers, woofer in export.
Select two audio signals, and separate under the situation that exports the front and back loud speaker to, in the preceding right side/preceding left audio signal of 2 channel signals of 2 channel signals of the single or stereophonic signal of FM/AM tuner 60, cd converter 70, auxiliary port 80,5.1 channel audio signals, two signals are exported in a left side/back left speaker and the preceding right side/right loud speaker in back respectively in the past, output signal not in central loudspeakers and woofer.
Table 1 is the conversion logic circuit schematic diagram of exporting according to the loud speaker that the user selects.Identical with shown in the table 1, each analog switch in the operation simulation conversion logic circuit 40 (1.-5.) is realized various loud speaker output.
[table 1]
| Pattern | ① | ② | ③ | ④ | ⑤ |
| Stereo | A/DVD | 1 | 1 | 1 | 1 |
| Dolby Surround sound channel A/DVD | 2 | 2 | 2 | 1 | 1 |
| Aux_in | 4 | 4 | 1 | 1 | 1 |
| 5.1CH DVD | 3 | 3 | 3 | 2 | 1 | |
| A | DVD | 1 | x | 1 | 1 | 2 |
| A | Aux_in | 1 | 4 | 1 | 1 | 1 |
| Aux_in | A | 4 | 1 | 1 | 1 | 1 |
| Aux_in | DVD | 4 | x | 1 | 1 | 2 |
| DVD | A | 3 | 1 | 1 | 1 | 1 |
| DVD | Aux_in | 3 | 4 | 1 | 1 | 1 |
Instruction card 1, for instance, the stereo A/DVD pattern of first row of table 1 is that a-signal (that is the signal of the signal of FM/AM tuner 60 and cd converter 70) or DVD audio signal are exported by a preceding left side/back left speaker and the preceding right side/back left speaker 2 channels.If all select the 1st port of analog switch (1.-5.), (all being shown as 1 in the table 1) in 4 loud speakers, only exports an audio-source.In addition on the one hand,, desired signal is inputed to analog-converted logical circuit 40, need carry out selection operation the 1st and the 2nd analog switch 31,33 (6., 7.) though do not show in the table 1.
Thus, during the signal of output FM/AM tuner 60, select the 1st and the 2nd port of analog switch 31, stop analog switch 33, the signal of final FM/AM tuner 60 exports 4 loud speakers to.
By another example, the fifth line pattern of table 1 is a-signal to be exported the loud speaker of front end, with the pattern of DVD audio signal output to the rear end loud speaker.Select analog switch the 1st port 1., 2. analog switch stops, and selects analog switch the 1st port, analog switch the 1st port, analog switch the 2nd port, analog switch the 1st and the 2nd port 6. 5. 4. 3..If 7. analog switch stops, the signal of forward end loud speaker output FM/AM tuner 60, the DVD of loud speaker output to the back-end audio signal., separating output though the DVD signal is 5.1 channel signals here, is favourable for output 2 channel signals.
With this mode table 1 show identical, the signal of multiple audio-source can be exported from loud speaker.
Fig. 3 is for exporting the not formation schematic diagram of the analog-converted logical circuit 40 of the audio signal of homology respectively to loud speaker and voice output.
In Fig. 3, sound processing apparatus 30 is described identical with Fig. 2, and analog-converted logic 40 constitutes different for being output in loud speaker and auxiliary sound output device respectively with the analog switch shown in Fig. 2.
Analog-converted logical circuit 40 receives the audio signal from sound processing apparatus 30 equilibrium treatment of input, the 4 channel audio signals that the Dolby Surround sound channel is handled, audio signal that provides in the auxiliary audio frequency device and DVD5.1 channel audio signal, only select in the above-mentioned audio signal audio signal output to loud speaker, perhaps, select audio signal in the above-mentioned audio signal, export loud speaker to, while is in the audio signal of equilibrium treatment, in the binary signal of the audio signal of auxiliary audio frequency device and 5.1 channel audio signals, select an audio signal, export the auxiliary sound output device to.
When only selecting an audio signal output to loud speaker, 2 channel signals of the single or stereophonic signal of FM/AM tuner 60, cd converter 70 and auxiliary port 80 are exported in a left side/back left speaker and the preceding right side/right loud speaker in back simultaneously in the past, if carrying out surround channel handles, be converted to 4 channel signals, export in a left side, the preceding right side, the right side, a left side/back, back and the central loudspeakers in the past.Simultaneously, 5.1 channel audio signals are exported in left speaker, preceding right loud speaker, back left speaker, the right loud speaker in back, central loudspeakers and the woofer respectively in the past.
Select two audio signals to separate when exporting loud speaker and auxiliary sound output device situation to, identical with above-mentioned audio signal output to loud speaker, when signal exports loud speaker to, 2 channel signals of the single or stereophonic signal of FM/AM tuner 60,2 channel signals of cd converter 70, auxiliary port 80, a preceding left side/preceding right audio signal of 5.1 channel audio signals export the auxiliary sound output device to, such as earphone (HP).
Table 2 is conversion logic schematic diagrames of selecting to export to loud speaker according to the user.Same as shown in Figure 2, operation enters the analog switch of analog-converted logical circuit 40 and 1.-3. (4., 5.), realizes the output of multiple loud speaker with sound processing apparatus 31,33.
[table 2]
| Pattern | ① | ② | ③ | ④ | ⑤ |
| Stereo A/DVD | 1 | 1 | x | Select | x |
| Dolby Surround A/DVD | 2 | 2 | x | x | Select |
| Aux_in | 4 | 1 | x | x | x |
| 5.1 CH DVD | 3 | 3 | x | x | x | |
| Stereo A | DVD | 1 | 1 | 2 | Select | x |
| Stereo A | Aux_in | 1 | 1 | 3 | Select | x |
| Doby A | DVD | 2 | 2 | 2 | x | Select |
| Doby A | Aux_in | 2 | 2 | 3 | x | Select |
| Doby A | A | 2 | 2 | 1 | x | Select |
| Stereo DVD | A | 1 | x | 1 | 3 | x |
| Stereo DVD | Aux_in | 1 | x | 3 | 3 | x |
| Doby DVD | A | 2 | 2 | 1 | Select | 3 |
| Doby DVD | Aux_in | 2 | 2 | 3 | x | 3 |
| 5.1 CH DVD | A | 3 | 3 | 1 | Select | x |
| 5.1 CH DVD | Aux_in | 3 | 3 | 3 | x | x |
Instruction card 2, for instance, the stereo A/DVD pattern of first row of table 2 is to export a-signal (that is the signal of the signal of FM/AM tuner 60 and cd converter 70) or DVD audio signal 2 channels to a preceding left side/back left speaker and the preceding right side/right loud speaker in back.(1., 3. the 1st port 2.) stops analog switch, selects analog switch arbitrary port 4., stops analog switch 5., only exports a kind of audio-source in 4 loud speakers to select analog switch.If in the said in the above conversion logic state, select analog switch the 3rd and the 2nd port 4., 2 channel signals of cd converter 70 export a preceding left side/back left speaker and the preceding right side/right loud speaker in back to.
As the another one example, the pattern of the 6th row of table 2 is output a-signals, to the signal of auxiliary sound output device output auxiliary port 80.Select analog switch 1., the 1st port is 2. selected analog switch the 3rd port 3., selects analog switch arbitrary port 4., stops analog switch 5., to loud speaker output a-signal, to the signal of auxiliary sound output device output auxiliary port 80.When a-signal is the signal of FM/AM tuner 6, select analog switch the 1st and the 2nd port 4. to get final product here.
This mode is same as shown in Figure 2, and various audio source signal can export loud speaker and auxiliary sound output device to.
By above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.
Therefore, the technical scope of this invention is not limited to the content on the specification, must determine its technical scope according to interest field.
Claims (8)
1, a kind of vehicle audio system that can separate output by homology not comprises:
To a plurality of audio signals of providing from a plurality of audio-source sound processing apparatus of acoustic processing in addition;
A part in a plurality of audio signals of acoustic processing above selecting, and separate the analog-converted logical circuit of exporting;
The acoustic processing of the audio signal of said sound processing apparatus and the microcontroller of analog switch logical circuit and conversion operations above the control.
2, the car audio system that can separate output by homology not as claimed in claim 1, it is characterized in that: top said analog-converted logical circuit is that the forward end loud speaker is exported different source audio signals respectively with the rear end loud speaker.
3, the car audio system that can separate output by homology not as claimed in claim 1, it is characterized in that: top said analog-converted logical circuit is to export the not audio signal of homology respectively to loud speaker and auxiliary sound output device.
4, the car audio system that can separate output by homology not as claimed in claim 1, it is characterized in that: top said sound processing apparatus is that audio signal is carried out equilibrium treatment or Dolby Surround sonication.
5, the car audio system that can separate output by homology not as claimed in claim 1 is characterized in that top said sound processing apparatus comprises: the 1st analog switch of selecting the audio signal of equilibrium treatment; Select the 2nd analog switch of the audio signal of surround channel processing.
6, the car audio system that can separate output by homology not as claimed in claim 1 is characterized in that top said audio-source comprises: FM/AM tuner, DVD, cd converter, auxiliary audio frequency device.
7, a kind of analog-converted logical circuit, it is characterized in that: audio signal and DVD5.1 channel audio signal that audio signal, Dolby Surround 4 channel audio signals, the auxiliary audio frequency device of described circuit reception equilibrium treatment provides, only select in the audio signal a kind of audio signal output to loud speaker, perhaps in two kinds of signals of the audio signal of the audio signal of equilibrium treatment, auxiliary audio frequency device and 5.1 channel audio signals, select two kinds of audio signals, loud speaker is exported before and after separating.
8, a kind of analog-converted logical circuit is characterized in that; Audio signal and DVD5.1 channel audio signal that audio signal, Dolby Surround 4 channel audio signals, the auxiliary audio frequency device of described circuit reception equilibrium treatment provides, only select in the audio signal a kind of audio signal output to loud speaker, perhaps select in the audio signal audio signal output to loud speaker, simultaneously in two kinds of signals of the audio signal of the audio signal of equilibrium treatment, auxiliary audio frequency device and 5.1 channel audio signals, select an audio signal, export the auxiliary sound output device to.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510036338 CN1909744A (en) | 2005-08-05 | 2005-08-05 | Vehicle audio system capable of separating output by different sources |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510036338 CN1909744A (en) | 2005-08-05 | 2005-08-05 | Vehicle audio system capable of separating output by different sources |
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| CN1909744A true CN1909744A (en) | 2007-02-07 |
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| CN 200510036338 Pending CN1909744A (en) | 2005-08-05 | 2005-08-05 | Vehicle audio system capable of separating output by different sources |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2472092A (en) * | 2009-07-24 | 2011-01-26 | New Transducers Ltd | Audio system for an enclosed space with plural independent audio zones |
| CN108076211A (en) * | 2016-11-11 | 2018-05-25 | 法乐第(北京)网络科技有限公司 | Audio output device, method and automobile based on Android |
| CN108806677A (en) * | 2018-02-14 | 2018-11-13 | 美律电子(深圳)有限公司 | Audio processing device and audio processing method |
-
2005
- 2005-08-05 CN CN 200510036338 patent/CN1909744A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2472092A (en) * | 2009-07-24 | 2011-01-26 | New Transducers Ltd | Audio system for an enclosed space with plural independent audio zones |
| CN108076211A (en) * | 2016-11-11 | 2018-05-25 | 法乐第(北京)网络科技有限公司 | Audio output device, method and automobile based on Android |
| CN108806677A (en) * | 2018-02-14 | 2018-11-13 | 美律电子(深圳)有限公司 | Audio processing device and audio processing method |
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