CN1471000A - Computer multichannel digital voice signal transmitting method and apparatus thereof - Google Patents
Computer multichannel digital voice signal transmitting method and apparatus thereof Download PDFInfo
- Publication number
- CN1471000A CN1471000A CNA021407584A CN02140758A CN1471000A CN 1471000 A CN1471000 A CN 1471000A CN A021407584 A CNA021407584 A CN A021407584A CN 02140758 A CN02140758 A CN 02140758A CN 1471000 A CN1471000 A CN 1471000A
- Authority
- CN
- China
- Prior art keywords
- digital
- sound
- sound signal
- signal
- computer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Circuit For Audible Band Transducer (AREA)
Abstract
Analog sound signal from each sound channel of computer sound card is processed to signal of digital sound packet, and then transferred to a transmission medium, which can connect to loudspeakers with power amplifier. Each loudspeaker can obtain signal of digital sound packet of specific sound channel from the transmission medium. Then, through the processing of D/A converter and power amplification, the signal is broadcasted. The invention improves sound quality greatly, since high RLC value in transmission line causes loss of sound power and quality when sound with large power from interface of computer sound card transferred to loudspeakers.
Description
Technical field
The invention relates to a kind of digitized sound signal transmission method and device thereof of computer multichannel, especially refer to a kind of adlib that is applied to multichannel, making adlib see through single transmission medium can be connected in series with a plurality of loudspeaker, makes things convenient for the framework solid around the audio field and reach.
Background technology
Fast development along with electronics and semiconductor industry, early stage computer only has the text screen function, gradually develop into and have the multimedia video playing function, and in order to support audio-video playing function nothing more than installing video signal adapter or adlib additional, also have at present to release and integrate the product of adlib circuit on motherboard, with reduction main frame volume.
Again, technological breakthrough along with relevant audio-visual industrial community, handle in order to the device or the compression of audio and video of stored voice and image no matter be, all progress greatly day by day and weed out the old and bring forth the new, for example recent VCD, the DVD epoch-making symbol product of suitable tool that all expands out, and the DVD with high image quality and high tone quality, it is arranged in pairs or groups and only can play the preferable picture of image quality in the DVD of computer PLAYER and screen, and the audio part, general computer often uses only has a right side, the adlib of L channel, cooperate the loudspeaker of two several hectowatts to constitute public address system again, yet, because only tool two sound channels can't be brought into play solid fully around audio, even if collocation DVD PLAYER still can't obtain the enjoyment of high tone quality, therefore, for the suitable user who requires of audio, will change the adlib of multichannel in the lump, collocation at least five group loudspeaker have theater combined acoustics around audio with one group of framework simultaneously.
General computer user is for fear of the size of computer desk, if set up many group loudspeaker, and except power circuit, see also shown in Figure 6, still need the extra sound power cable 70 that uses, and, use promoting sound exports loudspeaker 60 broadcasts to from adlib quality for the relative sound power cable 70 that needs more than at least five of the layout of five groups of loudspeaker 60; In addition, the relative position setting of loudspeaker and people's ear also can influence the environment of whole radio reception, be with, leave computer desk when loudspeaker and be arranged to when respectively fixing a point, will have the puzzlement of wiring, be with, for the adlib of multichannel output, for improving the broadcast quality, still there is other problem in the wiring between its loudspeaker and adlib, as add the high power cable and but improve the voice signal dough softening, and cause the loudspeaker playback quality not good.
From the above, extremely to be solved between multichannel adlib and loudspeaker because of analog transmission mode many shortcomings of deriving, with make these adlibs also easily framework around the environment of audio.
Summary of the invention
For this reason, fundamental purpose of the present invention provides a kind of with being connected only to be reduced to and being connected by a network-type transmission line between adlib and each loudspeaker, because of not using the sound power cable of expensive and high weight, can reduce the problem of sound loss on transmission line, and the method for transmitting signals of lifting broadcast tonequality can be simplified the complicated wiring operation that the array loudspeaker are provided with simultaneously.
Desiring to reach the employed major technique means of above-mentioned purpose is that order is applied to the digitized sound transmission method between multichannel adlib and array loudspeaker, each sound channel output sound of adlib is taken a sample respectively after the digitizing, after being processed into voice data packet via coding, compression again, transfer on the bus-type transmission medium, this bus-type transmission medium is to be connected with each loudspeaker, therefore, each loudspeaker can see through this bus-type transmission medium and obtain its corresponding voice data packet of playing sound channel, via after decompress(ion), the decoding, obtain the voice signal of this sound channel and amplified the back broadcast again; A digitized transmission mode can make between adlib and loudspeaker and no longer being connected with the sound power cable by this, so need not worry and to damage tonequality because of the not good power cable of using character, again, add that loudspeaker are combined with power amplifier device, event can be reduced to the ratio of audio distortions minimum, and plays out sound best in quality by back level loudspeaker.
The present invention's time purpose provides a convenient and quick digitizing communication device of laying around the audio field, and it includes:
One prime digital audio conveyer is the output terminal that is connected to the multichannel adlib;
Stages of digital sound receiver after at least one group is to be connected to the loudspeaker that are integrated with power amplifier;
One bus-type transmission medium is in order to connect this prime digital audio conveyer and each back stages of digital sound receiver;
After the above-mentioned simulation continuous signal of mainly through prime digital audio conveyer each sound channel of adlib being exported is converted to digital signal, sound according to different sound channels is treated as the voice data packet data, and export on the transmission medium, so that the back stages of digital sound receiver by corresponding particular channel is received, and then conversion is reduced to the analoging sound signal of original speech, after, input to power amplifier again and amplify the back and broadcast by loudspeaker; Be with, the present invention is that the hardware structure settlement computer with the digitized signal transmission mode is difficult to the problem of framework solid around audio with adlib and loudspeaker, simultaneously because of successfully replacing the high sound power cable of costliness and power loss, and promote the quality of sound playing relatively.
Description of drawings
Fig. 1 is a hardware structure calcspar of the present invention;
Fig. 2 is the present invention's part circuit block diagram;
Fig. 3 is the calcspar of first preferred embodiment of another part circuit of the present invention;
Fig. 4 is the calcspar of second preferred embodiment of another part circuit of the present invention;
Fig. 5 is for using the on-the-spot synoptic diagram of arranging that the present invention is applied to computer and loudspeaker;
Fig. 6 commonly uses the on-the-spot synoptic diagram of arranging that adlib is applied to computer and loudspeaker.
The figure number explanation:
(10) digital audio conveyer (11) many-one multiplexer
(12) A/D converter (13) control module
(131) controller (132) time sampling controller
(14) connect interface (20) digital audio receiving trap
(21) connect interface (22) control module
(221) controller (222) time sampling controller
(223) track selecting device (23) D/A converter
(24) monitoring back coupling unit (25) A/D conversion line interface
(26) A/D conversion sound interface (30) transmission medium
(31) adlib (32) power is imitated big device
(33) loudspeaker (34) computer interface
(40) rocking bar (41) microphone
(60) loudspeaker (70) power cable
Embodiment
The present invention is the digitized voice transmission technology that is applied between computer audio interface (adlib or audio chip) and loudspeaker, in order to replace the use of sound power cable fully.
Digitized sound signal transmission mode of the present invention is to comprise following listed every step:
The analog digital conversion is converted into audio digital signals with several channel sound signals that adlib is exported;
Digital speech code, be audio digital signals that previous step is rapid according to sound channel under it, in addition encoding process is a voice data packet, and exports on the transmission medium, to be sent to long-range back level public address system;
The decoding of digital speech package is to capture voice data packet corresponding and the identical sound channel of back level public address system, the audio digital signals of the corresponding sound channel of back taking-up of being decoded on transmission medium;
Digital-to-analogue conversion is that the audio digital signals that previous step is rapid carries out digital analogue conversion, is analog form to reduce the voice signal of this sound channel;
The signal that plays sound, the voice signal that previous step is obtained are suddenly amplified the back and see through loudspeaker and externally broadcast.
Above-mentioned digit transmission method can increase data compression and decompression step between digital speech code and digital speech package decoding step, to solve the frequency range of transmission limited on the transmission medium.
Seeing also shown in Figure 1ly, is to be hardware structure synoptic diagram of the present invention, and it includes:
One prime digital audio conveyer 10 is to be connected to adlib 31 multichannel output terminals, and as FR, FL, RL, RR etc., adlib also includes MID, MIC and rocking bar splicing ear at present again;
Stages of digital sound receiver 20 after at least one group is to be connected to corresponding sound equipment power amplifier 32, the still corresponding input end that is connected to loudspeaker 33 of each power amplifier 32 output terminal;
One transmission medium 30 is to be connected interface 14 in order to what connect this prime digital audio conveyer 10 and each back stages of digital sound receiver 20, and it can be bus type (BUS) Network transmission line.
Above-mentioned prime digital audio conveyer is that the simulation continuous signal that adlib 31 each sound channel are exported is treated to digital speech package signal, and export on the transmission medium 30, back stages of digital sound receiver 20 by corresponding particular channel receives, and sees through power amplifier 32 again and is amplified the back by loudspeaker 33 broadcasts.
See also shown in Figure 2ly, above-mentioned prime digital audio conveyer 10 is to include a controller 131 and a time sampling controller 132, wherein:
This control module 13 is in order to being voice data packet with sound signal processing, and built-in coding/mechanism such as compression in addition, and it includes:
This controller 131 can be the microprocessor of general tool calculation function; And
One time sampling controller 132 is to be connected in to this controller 131, in order to controller clock (CLOCK) signal to be provided.
One many-one multiplexer 11, corresponding respectively each sound channel output terminal and this time sampling controller 132 that is connected to this balanced device (not shown) of its array input end, its output terminal sees through an A/D converter 12 and is connected to this control module 13 again, and digital audio signal is inputed to this control module 13; And
One connects interface 14, is the output terminal of being located at this control module 13, can connect for bus transfer medium (not shown), and be connected with this time sampling controller 132, to obtain the clock signal identical with controller 131.
Above-mentioned prime digital audio conveyer 10 is each sound channel to be taken a sample in the TCM mode by many-one multiplexer 11, input to again and input in the controller 131 after A/D converter 12 is converted to digital signal, with to after encoding digital signals, the compression operation, see through connection interface 14 and input to the transmission medium (not shown).
Seeing also shown in Figure 3ly again, is the calcspar that is above-mentioned back stages of digital sound receiver 20, and it includes a control module 22, a monitoring and feedbacks unit 24, a D/A converter 23, and connect interface 21 etc.; Wherein:
This control module 22 is in order to being voice data packet with sound signal processing, and built-in decoding/mechanism such as decompression in addition; It includes a controller 221, a time sampling controller 222 and a sound selector switch 223:
This controller 221 is to be the microprocessor of general tool calculation function, and its output terminal connects a time sampling controller 222;
This sound selector switch 223 is input ends of being located at this controller 221, in order to set the sound channel that this controller 221 receives; It can be patterns such as various buttons, knob and DIP switch, for the convenient sound channel of setting its reception of user;
Again, unit 24 is feedback in this monitoring, be located at the input end of this controller 221 and power amplifier 32 and loudspeaker 33 output terminal between, the output signal of this power amplifier 32 is feedback to controller 221.
This D/A converter 23, it is the output terminal of being located to this controller 22, and be connected with time sampling controller 222 to obtain clock signal, this D/A converter 23 is in order to the decompress(ion) of controller 221 outputs and the digital audio signal of decoding are converted to simulating signal, input to power amplifier 32 again; And
This connects interface 21, is the input end of being located at this control module 22, can connect for bus transfer medium (not shown).
But above-mentioned back stages of digital sound receiver 20 is set the digital speech package that receives specific sound channel because of controller 221 transmitted sound track selectors 223, so can seeing through, controller connects interface 21 from transmitting the package of obtaining identical sound channel on the medium (not shown), and in addition decompress(ion) and decoding back output digital signal, see through D/A converter 23 conversion outputs one analoging sound signal again, after, can input to power amplifier 32 and amplify the back and externally play by loudspeaker 33.
Again, because adlib can connect for rocking bar at present, the rocking bar signal can see through adlib and computer interface inputs in the computer, see also shown in Figure 4, therefore this back stages of digital sound receiver 20 can further include an A/D conversion line interface 25J-PORT for rocking bar 40 connections, in like manner, this back stages of digital sound receiver 20 can be provided with an A/D who connects for microphone 41 again and change sound interface 26, aforementioned A/D conversion line interface 25 or A/D conversion sound interface 26 are to have the A/D translation function, and be located at the input end of controller 221, connect interface 21 rocking bar or Mike's fan signal are back to the adlib (not shown) to see through by this controller.
See also shown in Figure 5, it is a synoptic diagram of arranging for the present invention, each group is provided with its position in order to the loudspeaker 33 that cooperate back stages of digital sound receiver and power amplifier according to setting the sound channel of playing, be connected with the adlib that is combined with prime digital audio conveyer in the computer with a transmission medium 30 again, can replace originally with sound power transmission medium 30, because each loudspeaker 33 cooperates a power amplifier (not shown), after so stages of digital sound receiver 20 is obtained the voice signal of particular channel and is treated to actual sound after can seeing through, amplified broadcast again, so the power of not loss sound, and then influence the not good problem of loudspeaker 33 broadcast back tonequality.
From the above, the company between the certain sound effect changeable card of the present invention and loudspeaker arranges environment, and it has following every advantage:
1. Digital Transmission environment: be by single grid line serial connection prime adlib output With rear level public address system, even rocking bar and microphone, and reach with digitlization packet data and adlib Become transmitted in both directions.
2. merrily and lightheartedly change stereo set: the present invention replaces the simulation between script adlib and loudspeaker fully Formula transfer voice mode changes with the digitlization package transmission, and order is omitted and used many sound power transmission Line, with make entire arrangement more shape merrily and lightheartedly change.
3. simplify the sound equipment operation is set: forward and backward level jockey only needs a grid line to be connected in series, Use the sound power cable to reduce.
4. desirable tonequality: only be connected in series by a grid line because of between adlib and loudspeaker, so significantly lower Because using the sound power cable to cause the problem of power attenuation.
5. cost is low: because only being connected in series by a grid line between forward and backward level jockey, cooperate numeral Change the electronic installation cost and also reduce along with the semiconductor industry prosperity, and decrease with respect to high-power, low The price of the sound power cable of consumption is more cheap, so really have usability on the industry.
6. applicability height: can support the peripheral electronic device that adlib is integrated, such as rocking bar, wheat Gram wind makes things convenient for the user not have the finite length problem of using wired rocking bar, microphone.
Claims (14)
1, a kind of computer multichannel digitized sound signal transmission method, it is characterized in that: the multichannel analoging sound signal of computer audio interface (adlib or audio chip) output is processed into the digital speech package, be sent to each back level public address system on the line by transmission medium again, and after the digital speech package of particular channel is reduced to analoging sound signal via digital signal processing, amplified the back by public address system and broadcast.
2, computer multichannel digitized sound signal transmission method according to claim 1, it is characterized in that: the program that this treatment of simulated voice signal is the digital speech package is to include:
The analog digital conversion is that analoging sound signal is converted to the digital signal that can transmit on transmission medium;
Digital speech code is that the digital signal that previous step is rapid is encoded according to specific coding mechanism.
3, computer multichannel digitized sound signal transmission method according to claim 2, it is characterized in that: this digital signal processing is to include:
The decoding of digital speech package is to capture voice data packet corresponding and the identical sound channel of back level public address system, the audio digital signals of the corresponding sound channel of back taking-up of being decoded on transmission medium;
Digital-to-analogue conversion is that the audio digital signals that previous step is rapid carries out digital analogue conversion, to reduce the voice signal of this sound channel.
4, computer multichannel digitized sound signal transmission method according to claim 3 is characterized in that: the back increases by one data compression and decompression step between this digital speech code and digital speech package decoding step.
5, according to claim 1,2,3 or 4 described computer multichannel digitized sound signal transmission methods, it is characterized in that: this transmission medium is to be the bus network winding thread.
6, a kind of computer multichannel digitized sound signal transmitting device, it is characterized in that: it includes:
One prime digital audio conveyer is the adlib multichannel output terminal (FR, FL, RL, RR etc.) that is connected to computer, and analoging sound signal is converted to digital signal;
Stages of digital sound receiver after at least one group is the power amplifier that is connected to the loudspeaker that are combined with power amplifier, and its intermediate power amplifier is located at the input end of loudspeaker; And
One transmission medium is in order to connect this prime digital audio conveyer and each back stages of digital sound receiver.
7, computer multichannel digitized sound signal transmitting device according to claim 6, it is characterized in that: this prime digital audio conveyer includes:
One control module is in order to being voice data packet with sound signal processing, and can built-inly encodes/compression mechanism;
Corresponding respectively each the sound channel output terminal that is connected to this eqalizing cricuit of one many-one multiplexer, its array input end, and its output terminal is to see through the input end that an A/D converter is connected to this control module, and digital audio signal is inputed to this control module; And
One transmission interface is an output terminal of being located at this control module, can connect for the bus transfer medium.
8, computer multichannel digitized sound signal transmitting device according to claim 7, it is characterized in that: this back stages of digital sound receiver includes:
One control module is in order to being voice data packet with sound signal processing, and built-in coding/compression mechanism in addition;
One D/A converter is the output terminal of being located to this control module, is converted to simulating signal in order to the digital audio signal with decompress(ion) and decoding, inputs to power amplifier again; And
One transmission interface is an input end of being located at this control module, can connect for the bus transfer medium;
One bus-type transmission medium is in order to connecting this prime digital audio conveyer and each back stages of digital sound receiver, and it can be the BDS Network transmission line.
9, computer multichannel digitized sound signal transmitting device according to claim 7, it is characterized in that: the control module of this prime digital audio conveyer includes:
One controller can be the microprocessor of general tool calculation function, and its input end is connected to the output terminal of this A/D converter;
One monitoring back coupling unit is to be located at the input end of this controller and the output terminal of power amplifier and loudspeaker, and the output signal of this power amplifier is feedback to controller.
10, computer multichannel digitized sound signal transmitting device according to claim 8 is characterized in that: the control module of back stages of digital sound receiver is to include:
One controller is the microprocessor for general tool calculation function, and its output terminal is to see through a time sampling controller to be connected to this D/A converter;
One time sampling controller is to be connected between this controller, D/A converter and many-one multiplexer, in order to the identical clock of aforementioned each electronic package (CLOCK) signal to be provided;
One sound selector switch is an input end of being located at this controller, in order to set the sound channel that this controller receives.
11, computer multichannel digitized sound signal transmitting device according to claim 8 is characterized in that: this back stages of digital sound receiver further includes A/D conversion sound interface and connects for wire microphone.
12, according to Claim 8 or 11 described computer multichannel digitized sound signal transmitting devices, it is characterized in that: this back stages of digital sound receiver further includes A/D conversion line interface and connects for rocking bar.
13, computer multichannel digitized sound signal transmitting device according to claim 6, it is characterized in that: this transmission medium is to be the bus network winding thread.
14, computer multichannel digitized sound signal transmitting device according to claim 10, it is characterized in that: this sound selector switch can be various buttons, knob and DIP switch pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021407584A CN1471000A (en) | 2002-07-23 | 2002-07-23 | Computer multichannel digital voice signal transmitting method and apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021407584A CN1471000A (en) | 2002-07-23 | 2002-07-23 | Computer multichannel digital voice signal transmitting method and apparatus thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1471000A true CN1471000A (en) | 2004-01-28 |
Family
ID=34147647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA021407584A Pending CN1471000A (en) | 2002-07-23 | 2002-07-23 | Computer multichannel digital voice signal transmitting method and apparatus thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1471000A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105614895A (en) * | 2015-12-22 | 2016-06-01 | 厉政轩 | Method for preparing chromium-rich yeast autolysis powder through united enzymolysis of alkaline-acid protease |
| WO2020063053A1 (en) * | 2018-09-27 | 2020-04-02 | 上海闻泰信息技术有限公司 | Loudspeaker sound channel switching structure and electronic device |
-
2002
- 2002-07-23 CN CNA021407584A patent/CN1471000A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105614895A (en) * | 2015-12-22 | 2016-06-01 | 厉政轩 | Method for preparing chromium-rich yeast autolysis powder through united enzymolysis of alkaline-acid protease |
| WO2020063053A1 (en) * | 2018-09-27 | 2020-04-02 | 上海闻泰信息技术有限公司 | Loudspeaker sound channel switching structure and electronic device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1249664C (en) | Mixer device and music device capable of communicating with mixer device | |
| CN1302677C (en) | On-line music data providing system via bluetooth car kit | |
| KR20080071482A (en) | Encoding device and method, composite device and method, and transmission system | |
| CN1253852C (en) | Information transmission system, information encoding device and information decoding device | |
| CN1186963C (en) | Radio remote control system with microphone/loud speaker for Internet apparatus and method for controlling its telecontroller | |
| CN1719426A (en) | Music play control apparatus using at least one earphone function key and method thereof | |
| CN1352507A (en) | Game service system | |
| CN1758682A (en) | Stereo terminal and the method that adopts the audio call of this stereo terminal | |
| CN1477902A (en) | Wireless multichannel sound system using sound effect card | |
| CN1684473A (en) | Apparatus and method for playing and storing three-dimensional stereo sound in communication terminal | |
| CN1602060A (en) | Tuner module utilizing device-specific controller | |
| CN1471000A (en) | Computer multichannel digital voice signal transmitting method and apparatus thereof | |
| CN207802170U (en) | A kind of multi-path HDMI interfaces codec terminal system | |
| CN1913384A (en) | Audio source play system utilizing head-on earphone and audio-source play method | |
| CN1512689A (en) | Electronic device | |
| CN106603855B (en) | Method and system for realizing FM (frequency modulation) music transmission of mobile terminal | |
| CN1905764A (en) | Audio apparatus and its control method | |
| CN1774074A (en) | Analog/digital audio converter and a method thereof | |
| CN103152669A (en) | Method for utilizing intelligent terminal to operate voice frequency effector | |
| CN1295410A (en) | Device for connecting TV set with computer | |
| US20040030561A1 (en) | Method and apparatus for digital signal communication between computer-based multi-channel audio controller and surround sound systems | |
| CN1471339A (en) | Method and apparatus of sound digitalized ransmission for acoustic front and rear stages | |
| CN1194525C (en) | Digital recording system | |
| CN1237724C (en) | Method and means for receiving digital transmission comprising plurality of digital audio signals and for simultaneous reproduction of these signals as analog audio programmes | |
| CN1290377C (en) | Wireless acoustic system for providing phonetic and data multiple converting transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1061081 Country of ref document: HK |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: WD Ref document number: 1061081 Country of ref document: HK |