CN202019430U - Digital high-fidelity multi-channel microphone system - Google Patents
Digital high-fidelity multi-channel microphone system Download PDFInfo
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- CN202019430U CN202019430U CN2010206984374U CN201020698437U CN202019430U CN 202019430 U CN202019430 U CN 202019430U CN 2010206984374 U CN2010206984374 U CN 2010206984374U CN 201020698437 U CN201020698437 U CN 201020698437U CN 202019430 U CN202019430 U CN 202019430U
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Abstract
A digital high-fidelity multi-channel microphone system comprises eight identical channels. The number of the channel can be 256 at most. Each channel comprises an audio frequency input unit, a matrix control unit and a compression processing unit. The matrix control unit comprises eight input ends, and the eight input ends are respectively and correspondingly connected into eight matrix wires. Each audio frequency input unit is respectively connected with one matrix wire, and the output of the matrix control unit is connected with the compression processing unit. The compression processing unit is respectively provided with an output and an input to be connected with a digital signal processor (DSP) control unit. Outputs of the eight channels are jointly connected with an optical transceiver, and the optical transceiver respectively outputs in optical fiber output mode and audio engineering society/European broadcast union (AES/EBU) output mode. The digital high-fidelity multi-channel microphone system brings convenience to mounting and debugging, can be formed into one-in-eight-out, eight-in-one-out and cascade expanded to achieve 256-in-one-out, and resolves the problems of complexity of wires, interference of signals and poor signal quality. The high-fidelity multi-channel microphone system is provided with DSP arithmetic capability; and by managing the multi-channel microphone through a digital DSP, labor power is saved and efficiency is improved. The high-fidelity multi-channel microphone system can be applied to various microphones.
Description
Technical field
The utility model relates to stereo set, particularly a kind of digital high-fidelity multichannel microphone system.
Background technology
Use multichannel simulation microphone to need a large amount of microphone cable of laying in the market when installing and using, the problem of existence is a little less than the antijamming capability, and along with adding up of transmission range noise, distortion strengthens during the length Distance Transmission, and signal attenuation is serious.When performance and television relay, performance and mobile television unit require generally to take to increase the method for audio frequency isolating transformer than higher to audio signal quality, but have increased malfunctioning node.
Though having solved, existing digital microphone improves its antijamming capability.Because antijamming capability is strong, thus just do not need expensive transmission line such as shielded type cable, but when multichannel uses, still need the cable of respective channel, in the more and more deficienter epoch of resource, especially apparent is important
Though digital microphone has been simplified the microphone subsequent conditioning circuit, the digital signal of its output can directly be handled by subsequent conditioning circuit.Unlike simulation Mike, need add ADC, but just having solved analog signal conversion becomes digital signal, can't carry out the DSP computing
The multichannel analog microphone needs great amount of manpower when installation and control, the tuner is required than higher, and as when using 40 passages, the tuner will handle the signal of 40 passages simultaneously, at this moment carry out work simultaneously with regard to two tuners of needs, the problem of appearance is exactly two problems that the tuner is synchronous.
The utility model content
For addressing the above problem, the utility model provides a kind of digital high-fidelity multichannel microphone system.
The utility model numeral high-fidelity multichannel microphone system, comprise eight identical passages can cascade expansion accomplish that 256 advance one and go out, wherein: every paths comprises the audio frequency input unit, the matrix control unit, compression processing unit, the matrix control unit has eight inputs, eight inputs of eight matrix input units of eight paths correspondence respectively connect into eight matrix line, the audio frequency input unit of every paths connects a matrix line respectively, the output of matrix control unit is connected to compression processing unit, compression processing unit has an output to be connected the DSP control unit with an input respectively, each DSP control unit connects the compression processing unit of four passages, the output of eight passages is connected to an optical transceiver jointly, and optical transceiver is exported respectively has optical fiber output and AES/EBU output.
Described audio frequency input unit comprises input of No. one microphone and route road input, microphone is imported two inputs that are connected selector switch with circuit input respectively, output is connected to the equalizing circuit of being made up of high pitch adjustment, middle pitch adjustment and bass adjustment, again through eliminating the ultramagnifier output of echo.
Described matrix control unit comprises eight matrix inputs, 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 effective value respectively and calculates and 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 first volume circuit also is connected to compressor reducer through main level adjustment, and the output of compressor reducer is via quiet, second volume and limiter output.
The utility model numeral high-fidelity multichannel microphone system, can make things convenient for the Installation and Debugging task efficiently for the user provides in the use, can use different microphone matrix output interfaces according to different occasions, 1 advances eight goes out, eight advance one goes out, and the cascade of equipment expansion, when using as multichannel, can cascade the above microphone matrix of 2 and two system, can expand 1 and advance 16 and go out, 1 advances 24 goes out, 1 advances 32 goes out, 1 advances 40 goes out, and 1 advances 48 goes out and 16 advance one and go out, and 24 advance one goes out, 32 advance one goes out, 40 advance one goes out, and 48 advance one goes out, can accomplish at most 256 advance one go out can solve fully 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 the 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 human and material resources of waste in use greatly.
Because digital high-fidelity multichannel microphone system is digital signal, rather than common analog signal.Great advantage is that antijamming capability is strong, and the digital microphone wind system can not be subjected to those interference, influences from computer, network, field signal source, radio frequency border because of its intrinsic characteristics.
Solve the cable problem that when transmitting, needs respective channel at the multichannel microphone, when back level signal inserts, need not to adopt and simulate shielded type cable, only needed a radical word 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 conversion and become digital signal, can't carry out the problem of DSP computing
Adopt digital DSP calculation process, by digital DSP management multichannel microphone signal, solve the multichannel analog microphone and when installation and control, needed great amount of manpower, the tuner is required to compare higher requirement, as when using 40 passages, the tuner does not need microphone is managed, and transfers to digital DSP management, increases work efficiency greatly
Because the spectrum distribution of various musical instrument sound is very wide, lean on a microphone can both ideally record the signal of all musical instruments seemingly impossible.Spectrum distribution state according to various musical instrument acoustical signals, the microphone of specialized designs respective electrical sound characteristics pointedly, and matched combined in addition are packaged in the case, dispose the moving coil microphone of big diaphragm in the case, be used for picking up medium and low frequency rubadub as upright long tube drum, snare drum etc.; The Small diaphragm-piece condenser microphone of configuration is used for picking up the medium-high frequency sound as big cymbals, piano, orchestra in the case.The mode of this microphone combination can satisfy the needs that each specialty half professional band record amplifies all sidedly, makes band obtain the best record effect that amplifies.
Description of drawings
Fig. 1 is the whole line map of the utility model numeral high-fidelity multichannel microphone system;
Fig. 2 is the line map of a passage in the utility model numeral high-fidelity multichannel microphone system.
Embodiment
Below in conjunction with embodiment to the detailed explanation of the utility model numeral high-fidelity multichannel microphone system seat.
The utility model numeral high-fidelity multichannel microphone system, comprise eight identical passages, wherein: every paths comprises the audio frequency input unit, the matrix control unit, compression processing unit, the matrix control unit has eight inputs, eight inputs of eight matrix input units of eight paths correspondence respectively connect into eight matrix line, the audio frequency input unit of every paths connects a matrix line respectively, the output of matrix control unit is connected to compression processing unit, compression processing unit has an output to be connected the DSP control unit with an input respectively, each DSP control unit connects the compression processing unit of four passages, the output of eight passages is connected to an optical transceiver jointly, and optical transceiver is exported respectively has optical fiber output and AES/EBU output.
Described audio frequency input unit comprises input of No. one microphone and route road input, microphone is imported two inputs that are connected selector switch with circuit input respectively, can select microphone input or circuit input, output is connected to the equalizing circuit of being made up of high pitch adjustment, middle pitch adjustment and bass adjustment, again through eliminating the ultramagnifier output of echo.Equalizing circuit is used to regulate the electronic equipment of various frequency content signal of telecommunication amplification quantity, compensates the defective of sound field by the adjusting to the signal of telecommunication of various different frequencies, compensates and modify various sound sources and other special role.Ultramagnifier is used for eliminating the echo components of voice signal.
Described matrix control unit comprises eight matrix inputs, 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: the time difference that is used to remedy each road microphone signal.Silence switch is used for closing the output of this passage.The audio frequency input unit extracts acoustic signals and converts the signal of telecommunication to and pass to the matrix control unit, and optional 1 advances eight goes out to advance one to eight and go out, and can expand to one at most and advance 256 and go out and 256 advance any form in outing.
Described compression processing unit comprises two frequency dividers, frequency divider output connects effective value respectively and calculates and 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 first volume circuit also is connected to compressor reducer through main level adjustment, and the output of compressor reducer is via quiet, second volume and limiter output.DSP: carry out conversion or information extraction by using mathematical skill, handle bulk information, receive analog signal, be converted to 0 or 1 digital signal with digital signal.Again digital signal is made amendment, deletes, strengthened, and in the other system chip, analogue data or actual environment form are returned in the numerical data decipher.Second volume adopts agc circuit, adjusts gain automatically according to output.Compressor reducer: a kind of along with incoming signal level increases and the amplifier of the minimizing that gains itself.Limiter: be a kind of such amplifier, output level arrives after the certain value, no matter how incoming level increases, its Maximum Output Level keeps constant amplifier.The constant level signal of limiter output flows to upstream device, avoids upstream device to cause the signal saturation distortion because of incoming level is too high.
DSP also has Control on Communication and connects: can be connected to computer, make the user aspect fast adjust the microphone data parameter by the computer software interface.
Claims (4)
1. digital high-fidelity multichannel microphone system, comprise eight identical passages can cascade expansion accomplish that 256 advance one and go out, it is characterized in that: every paths comprises the audio frequency input unit, the matrix control unit, compression processing unit, the matrix control unit has eight inputs, eight inputs of eight matrix input units of eight paths correspondence respectively connect into eight matrix line, the audio frequency input unit of every paths connects a matrix line respectively, the output of matrix control unit is connected to compression processing unit, compression processing unit has an output to be connected the DSP control unit with an input respectively, each DSP control unit connects the compression processing unit of four passages, the output of eight passages is connected to an optical transceiver jointly, and optical transceiver is exported respectively has optical fiber output and AES/EBU output.
2. digital high-fidelity multichannel microphone system according to claim 1, it is characterized in that: described audio frequency input unit comprises input of No. one microphone and route road input, microphone is imported two inputs that are connected selector switch with circuit input respectively, output is connected to the equalizing circuit of being made up of high pitch adjustment, middle pitch adjustment and bass adjustment, again through eliminating the ultramagnifier output of echo.
3. digital high-fidelity multichannel microphone system according to claim 2, it is characterized in that: described matrix control unit comprises eight matrix inputs, eight are connected to gain circuitry, delayer and silence switch after selecting one, are exported by silence switch.
4. digital high-fidelity multichannel microphone system according to claim 3, it is characterized in that: described compression processing unit comprises two frequency dividers, frequency divider output connects effective value respectively and calculates and 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 first volume circuit also is connected to compressor reducer through main level adjustment, and the output of compressor reducer is via quiet, second volume and limiter output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206984374U CN202019430U (en) | 2010-12-29 | 2010-12-29 | Digital high-fidelity multi-channel microphone system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010206984374U CN202019430U (en) | 2010-12-29 | 2010-12-29 | Digital high-fidelity multi-channel microphone system |
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| CN202019430U true CN202019430U (en) | 2011-10-26 |
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| CN2010206984374U Expired - Fee Related CN202019430U (en) | 2010-12-29 | 2010-12-29 | Digital high-fidelity multi-channel microphone system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102137316A (en) * | 2010-12-29 | 2011-07-27 | 北京恒智兴业数码科技有限公司 | Digital high-definition multichannel microphone system |
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- 2010-12-29 CN CN2010206984374U patent/CN202019430U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102137316A (en) * | 2010-12-29 | 2011-07-27 | 北京恒智兴业数码科技有限公司 | Digital high-definition multichannel microphone system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111026 Termination date: 20161229 |