CN102137316B - Digital high-definition multichannel microphone system - Google Patents
Digital high-definition multichannel microphone system Download PDFInfo
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- CN102137316B CN102137316B CN201010623470.5A CN201010623470A CN102137316B CN 102137316 B CN102137316 B CN 102137316B CN 201010623470 A CN201010623470 A CN 201010623470A CN 102137316 B CN102137316 B CN 102137316B
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Abstract
The invention relates to a digital high-definition multichannel microphone system, comprising eight same channels, and the number can be 256 channels at most, wherein each channel comprises an audio input unit, a matrix control unit and a compressing unit, the matrix control unit is provided with eight input terminals, the eight input terminals are respectively correspondingly connected into eight matrix lines, each audio input unit is connected with one matrix line, the output of the matrix control unit is connected with the compressing unit, the compressing unit is respectively connected with a DSP (digital signal processing) control unit by virtue of an output and an input, the outputs of the eight channels are jointly connected to one optical transmitter and receiver, and the optical transmitter and receiver is respectively provided with an optical output terminal and an AES/EBU (audio engineering society/European broadcast union) output terminal. The digital high-definition multichannel microphone system provided by the invention is convenient to mount and debug, one input channel and eight output channels, eight input channels and one input channel and 256 input channels and one output channel by cascade expanding can be formed, the problems that cables are various, a signal is interfered and signal quality is poor are solved; and DSP computing power is realized, the multichannel microphone is managed by virtue of a digital DSP, manpower is saved, and the efficiency is improved, thus the system provided by the invention is applicable to various microphones.
Description
Technical field
The present invention relates to stereo set, particularly a kind of digital high-definition multichannel microphone system.
Background technology
Use in the market multichannel simulation microphone in the time installing and using, to need a large amount of microphone cable of laying, the problem of existence is a little less than antijamming capability, and along with adding up of transmission range noise, when long Distance Transmission, distortion strengthens, and signal attenuation is serious.
In the time of performance and television relay, performance and mobile television unit require higher to audio signal quality, generally take to increase the method for voice frequency isolation transformer, but have increased malfunctioning node.
Although having solved, existing digital microphone improves its antijamming capability.Because antijamming capability is strong, thus just do not need the expensive transmission lines such as shielded type cable, but in the time that multichannel uses, still need the cable of respective channel, in the more and more deficienter epoch of resource, especially aobvious is important
Although digital microphone has been simplified microphone subsequent conditioning circuit, the digital signal of its output can be directly by subsequent conditioning circuit processing.Unlike simulation Mike, need additional ADC, but just having solved analog signal converts digital signal to, cannot carry out DSP computing
Multichannel analog microphone needs a large amount of manpowers in the time that control is installed, higher to tuner's requirement, as in the time using 40 passage, tuner will process the signal of 40 passages simultaneously, at this moment carry out work with regard to two tuners of needs, the problem of appearance is exactly two problems that tuner is synchronous simultaneously.
Summary of the invention
For addressing the above problem, the invention provides a kind of digital high-definition multichannel microphone system.
Digital high-definition multichannel microphone system of the present invention, comprise eight identical passages, wherein: every paths comprises audio frequency input unit, matrix control unit, compression processing unit, matrix control unit has eight inputs, eight inputs of eight Input matrix unit of eight paths are connected respectively into eight matrix line, the audio frequency input unit of every paths connects respectively a matrix line, the output of matrix control unit is connected to compression processing unit, compression processing unit has respectively an output to be connected DSP control unit with an input, each DSP control unit connects the compression processing unit of four passages, the output of eight passages is connected to an optical transmitter and receiver jointly, optical transmitter and receiver is exported respectively has optical fiber output and AES/EBU output.
Described audio frequency input unit comprises road microphone input and a route road input, microphone is inputted two inputs that are connected respectively selector switch with circuit input, output is connected to the equalizing circuit being made up of high pitch adjustment, middle pitch adjustment and bass adjustment, then through eliminating the ultramagnifier output of echo.
Described matrix control unit comprises eight Input matrix ends, and eight are connected to gain circuitry, delayer and silence switch after selecting one, are exported by silence switch.
Described compression processing unit comprises two frequency dividers, frequency divider output connects respectively effective value and calculates and the first volume circuit, the output of effective value counting circuit is connected to the input of DSP, the output of DSP is returned and is connected to compressor reducer, the output of the first volume circuit is also connected to compressor reducer through main level adjustment, and the output of compressor reducer is via quiet, the second volume and limiter output.
Digital high-definition multichannel microphone system of the present invention, can facilitate efficiently Installation and Debugging task for user provides in the use, can use different microphone matrix output interfaces according to different occasions, 1 enters eight goes out, eight enter one goes out, and the cascade of equipment expansion, while use as multichannel, can more than 2 and two the microphone matrix system of cascade, can expand 1 enters 16 and goes out, 1 enters 24 goes out, 1 enters 32 goes out, 1 enters 40 goes out, 1 enters 48 goes out and 16 enters one and go out, 24 enter one goes out, 32 enter one goes out, 40 enter one goes out, 48 enter one goes out, can accomplish at most 256 enter one go out can solve completely large-scale program record with large-scale performance in the cable that runs into various, the interference of signal, and the problem of signal quality.The control microphone interface of Remote, what make sound man aspect checks, revises parameter.The quick microphone combination set meal in aspect, can use according to different occasions, and apolegamy number of microphone and microphone matrix system improve the in use human and material resources of waste greatly.
Due to digital high-definition multichannel microphone system be digital signal, instead of common analog signal.Great advantage is that antijamming capability is strong, and digital microphone wind system, because of its intrinsic feature, can not be subject to those interference, impacts from computer, network, field signal source, radio frequency border.
Solve at multichannel microphone and needed the cable problem of respective channel in when transmission, in the access of rear class signal, without adopting simulation shielded type cable, only needed a digital cable and optical fiber just can transmit multi channel signals, saved a large amount of cables
System adopts digital DSP Audio Matrix to solve digital microphone and has just solved analog signal and convert digital signal to, cannot carry out the problem of DSP computing
Adopt digital DSP calculation process, by digital DSP management multichannel microphone signal, solve multichannel analog microphone and in the time that control is installed, needed a large amount of manpowers, tuner is required to higher requirement, as in the time using 40 passage, tuner does not need microphone to manage, and transfers to digital DSP management, greatly increases work efficiency
Because the spectrum distribution of various musical instrument sound is very wide, lean on a microphone that the signal of all musical instruments can ideally be recorded seemingly impossible.According to the spectrum distribution state of various musical instrument acoustical signals, the microphone of specialized designs respective electrical sound characteristics pointedly, and matched combined in addition, be packaged in a case, in case, dispose the moving coil microphone of large diaphragm, be used for picking up the medium and low frequency rubadub as upright long cylinder drum, snare drum etc.; In case, the Small diaphragm-piece condenser microphone of configuration is used for picking up the medium-high frequency sound as big cymbals, piano, orchestra.The mode of this microphone combination can meet all sidedly the professional band of each specialty half and record the needs that amplify, and makes band obtain best record amplifying effect.
Brief description of the drawings
Fig. 1 is the overall line map of digital high-definition multichannel microphone system of the present invention;
Fig. 2 is the line map of a passage in digital high-definition multichannel microphone system of the present invention.
Embodiment
Below in conjunction with embodiment to the detailed explanation of digital high-definition multichannel microphone system seat of the present invention.
Digital high-definition multichannel microphone system of the present invention, comprise eight identical passages, wherein: every paths comprises audio frequency input unit, matrix control unit, compression processing unit, matrix control unit has eight inputs, eight inputs of eight Input matrix unit of eight paths are connected respectively into eight matrix line, the audio frequency input unit of every paths connects respectively a matrix line, the output of matrix control unit is connected to compression processing unit, compression processing unit has respectively an output to be connected DSP control unit with an input, each DSP control unit connects the compression processing unit of four passages, the output of eight passages is connected to an optical transmitter and receiver jointly, optical transmitter and receiver is exported respectively has optical fiber output and AES/EBU output.
Described audio frequency input unit comprises road microphone input and a route road input, microphone is inputted two inputs that are connected respectively selector switch with circuit input, can select microphone input or circuit input, output is connected to the equalizing circuit being made up of high pitch adjustment, middle pitch adjustment and bass adjustment, then through eliminating the ultramagnifier output of echo.Equalizing circuit, for regulating the electronic equipment of various frequency content signal of telecommunication amplification quantity, compensates the defect of sound field by the adjusting of the signal of telecommunication to various different frequencies, compensate and modify various sound sources and other special role.Ultramagnifier is for eliminating the echo components of voice signal.
Described matrix control unit comprises eight Input matrix ends, and eight are connected to gain circuitry, delayer and silence switch after selecting one, are exported by silence switch.Gain circuitry, improves the level signal of improving input microphone and circuit.Delayer: for making up the time difference of each road microphone signal.Silence switch is used for closing the output of this passage.Audio frequency input unit extracts acoustic signals and converts the signal of telecommunication to and pass to matrix control unit, and optional 1 enters eight goes out to eight to enter any form in outing.
Described compression processing unit comprises two frequency dividers, frequency divider output connects respectively effective value and calculates and the first volume circuit, the output of effective value counting circuit is connected to the input of DSP, the output of DSP is returned and is connected to compressor reducer, the output of the first volume circuit is also connected to compressor reducer through main level adjustment, and the output of compressor reducer is via quiet, the second volume and limiter output.DSP: by using mathematical skill to carry out conversion or information extraction, process bulk information with digital signal, receive analog signal, be converted to 0 or 1 digital signal.Again digital signal is modified, deletes, strengthened, and in other system chip, numerical data Xie Ze is returned to analogue data or actual environment form.The second volume adopts agc circuit, automatically adjusts gain according to output.Compressor reducer: a kind of along with incoming signal level increases and the amplifier reducing that itself gains.Limiter: be a kind of such amplifier, after output level arrives certain value, no matter how incoming level increases, its Maximum Output Level keeps constant amplifier.Limiter is exported constant level signal and is flowed to upstream device, avoids upstream device to cause the saturated mistake of signal straight because incoming level is too high.
DSP also has Control on Communication and connects: can be connected to computer, make user aspect fast adjust microphone data parameter by computer software interface.
Claims (4)
1. a digital high-definition multichannel microphone system, comprise that eight identical passage cascades expansions accomplish that 256 enter one and go out, it is characterized in that: every paths comprises audio frequency input unit, matrix control unit, compression processing unit, matrix control unit has eight inputs, eight inputs of eight Input matrix unit of eight paths are connected respectively into eight matrix line, the audio frequency input unit of every paths connects respectively a matrix line, the output of matrix control unit is connected to compression processing unit, compression processing unit has respectively an output to be connected DSP control unit with an input, each DSP control unit connects the compression processing unit of four passages, the output of eight passages is connected to an optical transmitter and receiver jointly, optical transmitter and receiver is exported respectively has optical fiber output and AES/EBU output, in the case of described digital high-definition multichannel microphone system, dispose the moving coil microphone of large diaphragm, be used for picking up upright long cylinder drum, the medium and low frequency rubadub of snare drum, in case, the Small diaphragm-piece condenser microphone of configuration is used for picking up the medium-high frequency sound of big cymbals, piano, orchestra.
2. digital high-definition multichannel microphone system according to claim 1, it is characterized in that: described audio frequency input unit comprises road microphone input and a route road input, microphone is inputted two inputs that are connected respectively selector switch with circuit input, output is connected to the equalizing circuit being made up of high pitch adjustment, middle pitch adjustment and bass adjustment, then through eliminating the ultramagnifier output of echo.
3. digital high-definition multichannel microphone system according to claim 2, is characterized in that: described matrix control unit comprises eight Input matrix ends, and eight are connected to gain circuitry, delayer and silence switch after selecting one, are exported by silence switch.
4. digital high-definition multichannel microphone system according to claim 3, it is characterized in that: described compression processing unit comprises two frequency dividers, frequency divider output connects respectively effective value counting circuit and the first volume circuit, the output of effective value counting circuit is connected to the input of DSP, the output of DSP is returned and is connected to compressor reducer, the output of the first volume circuit is also connected to compressor reducer through main level adjustment, and the output of compressor reducer is via mute circuit, the second volume circuit and limiter output.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010623470.5A CN102137316B (en) | 2010-12-29 | 2010-12-29 | Digital high-definition multichannel microphone system |
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| CN201010623470.5A CN102137316B (en) | 2010-12-29 | 2010-12-29 | Digital high-definition multichannel microphone system |
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| CN102137316A CN102137316A (en) | 2011-07-27 |
| CN102137316B true CN102137316B (en) | 2014-06-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102724607A (en) * | 2012-06-12 | 2012-10-10 | 东莞市龙健电子有限公司 | Digital matrix soundbox manager |
| CN102833666A (en) * | 2012-07-27 | 2012-12-19 | 深圳市东微智能科技有限公司 | Cascadable digital audio matrix, digital audio communication system and digital audio communication method |
| JP6485271B2 (en) * | 2015-07-31 | 2019-03-20 | ティアック株式会社 | Recording system |
| CN106028227B (en) * | 2016-07-08 | 2019-05-24 | 乐鑫信息科技（上海）股份有限公司 | Distributed microphone array and its applicable sonic location system |
| DE102016113831A1 (en) * | 2016-07-27 | 2018-02-01 | Neutrik Ag | wiring arrangement |
| CN106535062A (en) * | 2016-11-25 | 2017-03-22 | 广州飞达音响股份有限公司 | Dante digital audio processing method, system and device based on DSP |
| CN107452395B (en) * | 2017-08-23 | 2021-06-18 | 深圳创维－Rgb电子有限公司 | Voice signal echo cancellation device and television |
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| US7350156B2 (en) * | 2001-09-21 | 2008-03-25 | Yamaha Corporation | Audio signal editing apparatus and control method therefor |
| JP4103644B2 (en) * | 2003-03-20 | 2008-06-18 | ヤマハ株式会社 | Digital mixer |
| CN101442702A (en) * | 2008-12-17 | 2009-05-27 | 张佳尧 | Interactive digital audio processor |
| CN201409205Y (en) * | 2009-01-20 | 2010-02-17 | 北京正荣网际科技有限公司 | Video/audio-monitoring standard definition optical transceiver |
| CN101902671B (en) * | 2010-05-13 | 2013-07-10 | 吴法功 | Audio processing device and method |
| CN202019430U (en) * | 2010-12-29 | 2011-10-26 | 北京恒智兴业数码科技有限公司 | Digital high-fidelity multi-channel microphone system |
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