CN204928975U - Frequency encoding and decoding transmission system is looked to sound based on DREAMNET - Google Patents
Frequency encoding and decoding transmission system is looked to sound based on DREAMNET Download PDFInfo
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- CN204928975U CN204928975U CN201520393564.6U CN201520393564U CN204928975U CN 204928975 U CN204928975 U CN 204928975U CN 201520393564 U CN201520393564 U CN 201520393564U CN 204928975 U CN204928975 U CN 204928975U
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Abstract
The utility model relates to a frequency encoding and decoding transmission system is looked to sound based on DREAMNET, the power distribution box comprises a box body, be provided with on the box with the case lid of box looks lock, be provided with the display screen in the case lid, the box upper surface sets up the operation button, be provided with DSP treater, AD converter, DA converter, preamplifier, post amplifier, memory, equalizing control ware, echo cancelling device, time delay processing apparatus and compressor arrangement in the box. The beneficial effects of the utility model reside in that, a frequency encoding and decoding transmission system is looked to sound based on DREAMNET that the waterproof sealing performance is good, precision is high and the SNR is high is provided.
Description
Technical field
The utility model relates to a kind of audio/video encoding/decoding transmission system based on DREAMNET.
Background technology
It is a kind of technology of maturation that analog signal is distributed, and it is simple and is convenient to safeguard, there is incontrovertible advantage some aspect of rotor, as the preservation of extremely low delay and primary signal.On the other hand, analog signal distribution side is faced with a series of stern challenge, the mainly decay of long distance transmission, also has signal easily by external signal interference (radio frequency, cabinet damage etc.), therefore, the transmission quality of signal depends primarily on the quality of cable and the influence degree of external interference factor.
Because logical communication link equals physical connection, just point to point connect, the concrete plan in early stage becomes most important, and construction cost is also very expensive, and flexibility and autgmentability but have significant limitation.Finally, most important signal transmission safety problem, output interruption or output signal are intercepted and captured, and (with amendment or damage) becomes very easy.
Continually varying in time at the amplitude of analogue audio frequency technology sound intermediate frequency signal, its record and process also exist the defects such as mechanical transfer shake, code book Earth noise and nonlinear distortion, people in order to the cost overcoming these deficiencies and pay very high, and resulting improvement is very little.
At numeric field point to putting copper conductor or Fiber connection, for the binary code after signal transmission waveform digitization.Simulated sound is continuous print in time, and digital audio is a Serial No., is interrupted in time.Digital audio is by sampling and quantizing, and the audio signal of analog representation is converted to the digital audio and video signals be made up of many binary numbers 1 and 0.In digital field, a digitized transmission of signal waveform is with copper conductor or light.Although the physical connection between arranging remains a little to point and unidirectional, logical relation and different signals can pass through multiplexing its connection type becoming the binary representation period identical shared.Add the problem that logical relation becomes the available bandwidth on certain transmission medium.Link route in some cases again, the ways and means easily via control software design realizes.But concrete digital transmission scheme is still the transmission of point-to-point transmission, but also need to use the cable be applicable to.
Utility model content
In view of the above-mentioned problems in the prior art, main purpose of the present utility model is to address the deficiencies of the prior art, and the utility model provides the audio/video encoding/decoding transmission system based on DREAMNET that a kind of waterproof sealing performance is good, precision is high and signal to noise ratio is high.
The utility model provides a kind of audio/video encoding/decoding transmission system based on DREAMNET, comprise casing, described casing is provided with the case lid be interlocked with described casing, display screen is provided with in described case lid, described casing upper surface setting operation button, dsp processor, A/D converter, D/A converter, preamplifier, post amplifier, memory, propertional regulator, echo cancelling device, delay process device and compression set is provided with in described casing, wherein:
Described dsp processor comprises the first dsp processor and the second dsp processor, described first dsp processor communicates respectively by optical fiber with described second dsp processor, described first dsp processor is connected with described display with described A/D converter respectively, described second dsp processor is connected with described display with described D/A converter respectively, described supply unit is connected with the second dsp processor with described first dsp processor respectively, for powering to it;
Described memory comprises first memory and second memory, and described first memory is connected with described first dsp processor, and described second memory is connected with described second dsp processor;
Described echo cancelling device is connected with described preamplifier with described propertional regulator respectively, described delay process device is connected with described A/D converter with described preamplifier respectively, and described compression set is connected with described post amplifier with described D/A converter respectively;
The side of described casing is provided with multiple video input mouth and audio input port, described video input mouth is connected with described propertional regulator respectively with audio input port, described video input mouth is used for being connected with outside video input terminal, and described audio input port is used for being connected with outside audio frequency input terminal;
The opposite side of described casing is provided with multiple video output and audio output port, described video output is connected with described post amplifier respectively with described audio output port, described video output is used for being connected with outside video output terminal, and described audio output port is connected with the audio output terminal of outside.
Optionally, also comprise cooling device, described cooling device is connected with the second dsp processor with described first dsp processor respectively, for cooling it.
Optionally, described cover wall circumferencial direction is provided with waterproof grommet, for sealing the junction of case lid and casing.
Optionally, the bottom of described casing and side are respectively arranged with overcoat.
Optionally, described audio frequency input terminal is microphone or CD Player.
Optionally, described audio output terminal is audio amplifier or recorder.
The utility model has the following advantages and beneficial effect: the utility model provides a kind of audio/video encoding/decoding transmission system based on DREAMNET, it is good that this system has waterproof sealing performance, the feature that precision is high and signal to noise ratio is high, can mate for low delay, the requirement of the broadcasting organization of full signal transparency and high reliability, application comprises and is not limited to greatly to support inner broadcast, studio and other fixtures, in stadiums race and concert site activity, and mobile control room, on-the-spot front end and studio link is linked by WAN, signalization is distributed more flexibly, in addition, this system carries out transmission multiple signals by means of only an optical fiber, system organization can very flexibly, the redundant safety of system and fault-tolerant networks be easy to realize, and can carry out dynamic conditioning at any time and the situation etc. of arbitrary signal in supervisory control system of can having a try to the route of signal, meanwhile, the cable laid due to actual needs in network system greatly reduces, and the size of wire casing also can reduce thereupon, and the artificial and time that cable laying spends also just greatly reduces and reduces, and because optical fiber has born immunological characteristic for various electromagnetic interference and radio frequency interference, so the debugging of whole system and maintenance also become more easy, this system is by adopting DREAMNET host-host protocol, and the transparent transmission of DREAMNET host-host protocol by adopting " 0 bit insertion " to ensure data, this agreement does not rely on any one character set, data message can transparent transmission, " 0 bit insertion " for realizing transparent transmission is easy to hardware implementing, full-duplex communication, there is higher data link transmission efficiency, all frames adopt CRC inspection, serial number is carried out to information frame, can receive or heavily receive by anti-leak-stopping, transmission reliability is high, transmission controlling functions is separated with processing capacity, there is larger flexibility.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the audio/video encoding/decoding transmission system based on DREAMNET of the present utility model;
Fig. 2 is the structural representation of the audio/video encoding/decoding transmission system based on DREAMNET of the present utility model.
Embodiment
With specific embodiment, the utility model is further described below with reference to accompanying drawings.
DREAMNET is the contents distribution solution in a real-time audio frequency and the IP-based network environment of other media.Utilize computer network with standard network protocol and technology, DREAMNET may operate in network infrastructure.The expansion of performance and capacity and the ability of basic network architectures.Mainly for professional broadcast market, coupling is the requirement of low delay, the broadcasting organization of full signal transparency and high reliability by DREAMNET.Application includes, but is not limited to: support inner broadcast, studio and other fixtures, in stadiums race and concert site activity, and mobile control room, link on-the-spot front end and studio link by WAN, more flexible signalization is distributed.DREAMNET is the cross-cutting technical research DREAMNET of the subjects such as broadcast, communication and computer, and next generation network audio system, achieves the control with H & Z company, the Seamless integration-for the treatment of and monitoring technology.DREAMNET is by the numeral of H & Z company, and power amplifier and speaker product gather together, and is managed by a unified interface.The digital device of a new generation all can work under DREAMNET platform.DREAMNET platform is controlled by Ethernet, monitoring power amplifier and speaker system, and process is transmission of audio signal also.Power amplifier and loud speaker control by DREAMNET, monitoring and protection, configurable DSP, and multi-channel audio transmission Seamless integration-.As an IP-based solution, DREAMNET is based on OSI Reference Model layer-3 protocol layer.IP can at almost any Internet Transmission, and be connection (comprising the Internet) the communication basal layer across wide area network.Although Ethernet using by as the bottom data link layer dispose when, IP can use in general infrastructure under nearly all network technology and topology.
As shown in Fig. 1 to 2: a kind of audio/video encoding/decoding transmission system based on DREAMNET of the utility model embodiment, comprise casing 200, described casing 200 is provided with the case lid 100 be interlocked with described casing 200, display screen 109 is provided with in described case lid 100, described casing upper surface setting operation button 120, dsp processor is provided with in described casing 200, A/D converter 106, D/A converter 114, preamplifier 104, post amplifier 116, memory, propertional regulator 102, echo cancelling device 103, delay process device 105 and compression set 115, wherein: described dsp processor comprises the first dsp processor 108 and the second dsp processor 112, described first dsp processor communicates respectively by optical fiber 101 with described second dsp processor 112, described first dsp processor is connected with described display with described A/D converter respectively, described second dsp processor is connected with described display with described D/A converter respectively, described supply unit is connected with the second dsp processor with described first dsp processor respectively, for powering to it, described memory comprises first memory 107 and second memory 113, and described first memory is connected with described first dsp processor, and described second memory is connected with described second dsp processor, described echo cancelling device is connected with described preamplifier with described propertional regulator respectively, described delay process device is connected with described A/D converter with described preamplifier respectively, and described compression set is connected with described post amplifier with described D/A converter respectively, the side of described casing 200 is provided with multiple video input mouth 101 and audio input port 119, described video input mouth and audio input port are connected with described propertional regulator 102 respectively, described video input mouth is used for being connected with outside video input terminal, and described audio input port is used for being connected with outside audio frequency input terminal, the opposite side of described casing 200 is provided with multiple video output 118 and audio output port 117, described video output 118 is connected with described post amplifier 116 respectively with described audio output port 117, described video output is used for being connected with outside video output terminal, and described audio output port is connected with the audio output terminal of outside, this system can mate the requirement of the broadcasting organization for low delay, full signal transparency and high reliability, application comprises and is not limited to greatly to support inner broadcast, studio and other fixtures, in stadiums race and concert site activity, and mobile control room, link on-the-spot front end and studio link by WAN, signalization is distributed more flexibly, in addition, this system carries out transmission multiple signals by means of only an optical fiber, system organization can very flexibly, the redundant safety of system and fault-tolerant networks be easy to realize, and can carry out dynamic conditioning at any time and the situation etc. of arbitrary signal in supervisory control system of can having a try to the route of signal, meanwhile, the cable laid due to actual needs in network system greatly reduces, and the size of wire casing also can reduce thereupon, and the artificial and time that cable laying spends also just greatly reduces and reduces, and because optical fiber has born immunological characteristic for various electromagnetic interference and radio frequency interference, so the debugging of whole system and maintenance also become more easy, this system is by adopting DREAMNET host-host protocol, and the transparent transmission of DREAMNET host-host protocol by adopting " 0 bit insertion " to ensure data, this agreement does not rely on any one character set, data message can transparent transmission, " 0 bit insertion " for realizing transparent transmission is easy to hardware implementing, full-duplex communication, there is higher data link transmission efficiency, all frames adopt CRC inspection, serial number is carried out to information frame, can receive or heavily receive by anti-leak-stopping, transmission reliability is high, transmission controlling functions is separated with processing capacity, there is larger flexibility, in addition, this system adopts Internet Transmission, utilizes modularized design, and the signal of telecommunication accurately and effectively to the transmission of each size site, it is transmitted by digital signal, effectively reduces the signal distortion when long-range conveying, and system connects simple, utilize the optical fiber of low cost or CAT-5 line to replace multicore cable, decrease cabling processes, simultaneously, system adopts the mode of centralized management, can accept and hold different types of voice frequency terminal equipment, for can according to service condition and needs, the parameter of adjustment System and line arrangements, especially this optical fiber or CAT-5 line, loss of signal in transmitting procedure is almost nil, very applicable remote transmission, thoroughly stopped common sound reinforcement system remote transmission signal decay excessive, track laying is complicated, and the difficult problem that electromagnetic interference is large, particularly large-scale arenas and stadiums, can say that effect is very good.
As the preferred implementation of above-described embodiment, also comprise cooling device 110, described cooling device 110 is connected with the second dsp processor 112 with described first dsp processor 108 respectively, for cooling it, increases work efficiency.
As the preferred implementation of above-described embodiment, described case lid 100 inwall circumferencial direction is provided with waterproof grommet, for sealing the junction of case lid 100 and casing 200.
As the preferred implementation of above-described embodiment, the bottom of described casing 200 and side are respectively arranged with overcoat (not drawing in figure).
As the preferred implementation of above-described embodiment, described audio frequency input terminal is microphone or CD Player.
As the preferred implementation of above-described embodiment, described audio output terminal is audio amplifier or recorder.
Last it is noted that above-described each embodiment is only for illustration of the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in previous embodiment, or to wherein partly or entirely technical characteristic carry out equivalent replacement; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.
Claims (6)
1. the audio/video encoding/decoding transmission system based on DREAMNET, it is characterized in that: comprise casing, described casing is provided with the case lid be interlocked with described casing, display screen is provided with in described case lid, described casing upper surface setting operation button, dsp processor, A/D converter, D/A converter, preamplifier, post amplifier, memory, propertional regulator, echo cancelling device, delay process device and compression set is provided with in described casing, wherein:
Described dsp processor comprises the first dsp processor and the second dsp processor, described first dsp processor communicates respectively by optical fiber with described second dsp processor, described first dsp processor is connected with described display with described A/D converter respectively, described second dsp processor is connected with described display with described D/A converter respectively, supply unit is connected with the second dsp processor with described first dsp processor respectively, for powering to it;
Described memory comprises first memory and second memory, and described first memory is connected with described first dsp processor, and described second memory is connected with described second dsp processor;
Described echo cancelling device is connected with described preamplifier with described propertional regulator respectively, described delay process device is connected with described A/D converter with described preamplifier respectively, and described compression set is connected with described post amplifier with described D/A converter respectively;
The side of described casing is provided with multiple video input mouth and audio input port, described video input mouth is connected with described propertional regulator respectively with audio input port, described video input mouth is used for being connected with outside video input terminal, and described audio input port is used for being connected with outside audio frequency input terminal;
The opposite side of described casing is provided with multiple video output and audio output port, described video output is connected with described post amplifier respectively with described audio output port, described video output is used for being connected with outside video output terminal, and described audio output port is connected with the audio output terminal of outside.
2. the audio/video encoding/decoding transmission system based on DREAMNET according to claim 1, is characterized in that, also comprise cooling device, and described cooling device is connected with the second dsp processor with described first dsp processor respectively, for cooling it.
3. the audio/video encoding/decoding transmission system based on DREAMNET according to claim 1, is characterized in that, described cover wall circumferencial direction is provided with waterproof grommet, for sealing the junction of case lid and casing.
4. the audio/video encoding/decoding transmission system based on DREAMNET according to claim 1, is characterized in that, bottom and the side of described casing are respectively arranged with overcoat.
5. the audio/video encoding/decoding transmission system based on DREAMNET according to claim 1, is characterized in that, described audio frequency input terminal is microphone or CD Player.
6. the audio/video encoding/decoding transmission system based on DREAMNET according to claim 1, is characterized in that, described audio output terminal is audio amplifier or recorder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520393564.6U CN204928975U (en) | 2015-06-09 | 2015-06-09 | Frequency encoding and decoding transmission system is looked to sound based on DREAMNET |
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| CN201520393564.6U CN204928975U (en) | 2015-06-09 | 2015-06-09 | Frequency encoding and decoding transmission system is looked to sound based on DREAMNET |
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| CN204928975U true CN204928975U (en) | 2015-12-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106303159A (en) * | 2015-06-09 | 2017-01-04 | 闫冰 | A kind of audio/video encoding/decoding based on DREAMNET transmission system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106303159A (en) * | 2015-06-09 | 2017-01-04 | 闫冰 | A kind of audio/video encoding/decoding based on DREAMNET transmission system |
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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: 20151230 Termination date: 20190609 |