CN201114259Y - Audio signal transmission system - Google Patents
Audio signal transmission system Download PDFInfo
- Publication number
- CN201114259Y CN201114259Y CNU200720114850XU CN200720114850U CN201114259Y CN 201114259 Y CN201114259 Y CN 201114259Y CN U200720114850X U CNU200720114850X U CN U200720114850XU CN 200720114850 U CN200720114850 U CN 200720114850U CN 201114259 Y CN201114259 Y CN 201114259Y
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- audio
- audio frequency
- signal
- audio signal
- transmission system
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Abstract
The utility model discloses an audio signal transmission system. An output end of an audio signal generator is connected with an input end of an audio control device; an audio signal adaptor is arranged between the audio control device and audio terminal equipment; the output end of the audio control device is connected with an input end of the audio signal adaptor; an output end of the audio signal adaptor is connected with an input end of the audio terminal equipment; and an audio filtering device is arranged between an input end and an output end of an audio signal converter. The audio signal transmission system has the advantages that: the audio filtering device completes separation filtering processing of signal inside the audio signal transmission system, thereby eliminating noise and interference signal and improving the quality of audio signal; moreover, an audio transformer, which can improve signal quality and is arranged between the audio control device and the audio terminal equipment, can maintain constant signal within or beyond the scope of 200M<2> as well as original sound effect.
Description
Technical field
The utility model relates to a kind of audio frequency equipment, especially relates to a kind of audio frequency signal transmission system.
Background technology
When the large-scale specialty of outdoor relay or scene of television broadcasting is performed, for before the television set or audience can have high-quality vocal music to enjoy, need a cover audio frequency signal transmission system as support, existing audio frequency signal transmission system is basically by audio signal generator, this three part of audio control apparatus and voice frequency terminal equipment is formed, because the performance place is in outdoor, its environment is comparatively complicated abominable, be struck by lightning as the Nature, the automobile process, the transmitting-receiving of electrical equipment work and various communication signals etc., various interference from outside signals, noise all can bring influence to the audio signal in the transmission, can influence spectators' hearing enjoying, can have a strong impact on simultaneously and record and relay live effect.In order to address this problem, people increase filter circuit separately in this three parts audio frequency apparatus, and this can solve the problem that above-mentioned signal disturbs, but can cause the circuit complexity of equipment, and problems such as production cost height cause the equipment heaviness simultaneously, and inconvenience is installed.
Summary of the invention
Technical problem to be solved in the utility model provides the low and good audio frequency signal transmission system with filter function of acoustical quality of a kind of production cost.
It is a kind of audio frequency signal transmission system that the utility model solves the problems of the technologies described above the technical scheme that is adopted, comprise audio signal generator, audio control apparatus and voice frequency terminal equipment, the output of described audio signal generator is connected with the input of described audio control apparatus, be provided with the audio signal adapter between described audio control apparatus and the voice frequency terminal equipment, the output of described audio control apparatus is connected with the input of audio signal adapter, the output of described audio signal adapter is connected with the input of described voice frequency terminal equipment, is provided with the audio frequency filter between the input of described audio-frequency signal converter and the output.
Described audio frequency filter is made up of at least more than one audio frequency transformer, and a winding and turn ratio secondary winding of described audio frequency transformer is 1: 1, and the iron core of described audio frequency transformer adopts the nickel steel sheet.
The input of described audio signal adapter comprises an input interface, the output of described audio-frequency signal converter comprises at least one and the corresponding output interface of described input interface, and described audio frequency transformer is arranged between described input interface and the described output interface.
The ground wire of all audio frequency transformers in the described audio frequency filter is connected with each other, and the ground wire of one of them audio frequency transformer is provided with switch.
Compared with prior art, advantage of the present utility model is to be provided with between audio control apparatus and the voice frequency terminal equipment audio frequency filter, make signal in the isolation processing of audio system transmission system through the audio frequency filter, noise and interference signal have been rejected, the audio signal quality improves, and plays the effect of filtering clutter.The audio frequency transformer that can improve signal quality has been installed between audio control apparatus and voice frequency terminal equipment has been can be implemented in 200M
2Inhibit signal is constant in the interior and above scope, keeps former sound effective value.
Audio frequency transformer adopts the nickel steel sheet material, mainly be its high magnetic permeability and high frequency characteristics, the high-fidelity performance, the nickel steel sheet is applicable to 50Hz～20KHz frequency, be far superior to other transformer materials at audio area nickel steel sheet for audio frequency transformer unshakable in one's determination, the for example audio frequency transformer of silicon steel sheet, ferrocart core, MnZn and magnesium zinc series, effectively trap signal noise.
The ground wire of an audio frequency transformer is provided with switch therein, because immediate current changes the noise that produces, plays quiet effect when avoiding plugging cable or mains switch action.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model;
Fig. 2 is the structural representation that is provided with the audio frequency transformer of switch of the present utility model;
Fig. 3 is audio frequency filter of the present utility model and audio control apparatus and voice frequency terminal equipment connection layout;
Fig. 4 is the vertical view of audio signal adapter of the present utility model;
Fig. 5 is the stereogram of audio signal adapter of the present utility model;
Fig. 6 is the internal structure schematic diagram of audio signal adapter of the present utility model.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Embodiment one: a kind of audio frequency signal transmission system, comprise audio signal generator 1, audio control apparatus 2 and voice frequency terminal equipment 3, the output of audio signal generator 1 is connected with the input of audio control apparatus 2, be provided with audio signal adapter 5 between audio control apparatus 2 and the voice frequency terminal equipment 3, the output of audio control apparatus 2 is connected with the input of audio signal adapter 5, the output of audio signal adapter 5 is connected with the input of voice frequency terminal equipment 3, is provided with audio frequency filter 4 between the input of audio-frequency signal converter 5 and the output.Audio frequency filter 4 is made up of 28 audio frequency transformers 9, a winding 6 of audio frequency transformer 9 and turn ratio secondary winding 7 are 1: 1, iron core in the transformer is the nickel steel sheet, in the nickel steel sheet nickeliferous mass percent be 78%, the input of audio signal adapter 5 comprises an input interface 10, the output of audio-frequency signal converter 5 comprises at least one and input interface 10 corresponding output interfaces 11, and audio frequency transformer 9 is arranged between input interface 10 and the output interface 11.The ground wire 8 of one of them audio frequency transformer in the audio frequency filter 4 is provided with K switch.Other parameters of audio frequency transformer 9 are as follows: inductance (initial circuit): @100Hz 1V:＞12Hy,
Resistance (initial circuit): 48ohm,
Resistance (secondary circuit): 56ohm,
The 40Hz distortion factor:＜0.1% (10dbu test circuit),
The 1KHz distortion factor:＜0.01% (10dbu test circuit)
20Hz～20KHz linear phase position skew:＜0.3db (20db test circuit)
150ohm balance input common-mode reject rate:＞120db (100Hz)＞90db (5KHz)
Electric capacity: elementary: 210PF level: 140PF.
Along with science and technology development, can substitute with other audio frequency filter in this audio frequency signal transmission system.
Introduce the operation principle of audio frequency signal transmission system: audio signal is sent from audio signal generator 1, enter the audio control apparatus 2 on foreground, double shield split conductor by long distance transmits again, enter the input interface 10 of audio signal adapter by split conductor, input interface 10 can adopt aviation plug, enter audio frequency filter 4 inside again, signal is handled at the isolation filter of inside process audio frequency transformer 9, reject noise and interference signal, signal quality improves, to each microphone and other audio frequency and sound pick-up outfit, output interface 11 can adopt the CANNON plug by output interface 11 output Low ESR signals.
Claims (4)
1. audio frequency signal transmission system, comprise audio signal generator, audio control apparatus and voice frequency terminal equipment, the output of described audio signal generator is connected with the input of described audio control apparatus, be provided with the audio signal adapter between described audio control apparatus and the voice frequency terminal equipment, the output of described audio control apparatus is connected with the input of audio signal adapter, the output of described audio signal adapter is connected with the input of described voice frequency terminal equipment, it is characterized in that being provided with the audio frequency filter between the input of described audio-frequency signal converter and the output.
2. a kind of audio frequency signal transmission system according to claim 1, it is characterized in that described audio frequency filter is made up of at least more than one audio frequency transformer, a winding and turn ratio secondary winding of described audio frequency transformer is 1: 1, and the iron core of described audio frequency transformer adopts the nickel steel sheet.
3. a kind of audio frequency signal transmission system according to claim 2, the input that it is characterized in that described audio signal adapter comprises an input interface, the output of described audio-frequency signal converter comprises at least one and the corresponding output interface of described input interface, and described audio frequency transformer is arranged between described input interface and the described output interface.
4. a kind of audio frequency signal transmission system according to claim 2 is characterized in that the ground wire of all audio frequency transformers in the described audio frequency filter is connected with each other, and the ground wire of one of them audio frequency transformer is provided with switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720114850XU CN201114259Y (en) | 2007-09-13 | 2007-09-13 | Audio signal transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720114850XU CN201114259Y (en) | 2007-09-13 | 2007-09-13 | Audio signal transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201114259Y true CN201114259Y (en) | 2008-09-10 |
Family
ID=39966008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720114850XU Expired - Fee Related CN201114259Y (en) | 2007-09-13 | 2007-09-13 | Audio signal transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201114259Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106078806A (en) * | 2016-08-03 | 2016-11-09 | 国网江西省电力公司检修分公司 | Intelligent Mobile Robot monitoring system based on Centralized Monitoring and method |
-
2007
- 2007-09-13 CN CNU200720114850XU patent/CN201114259Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106078806A (en) * | 2016-08-03 | 2016-11-09 | 国网江西省电力公司检修分公司 | Intelligent Mobile Robot monitoring system based on Centralized Monitoring and method |
| CN106078806B (en) * | 2016-08-03 | 2018-06-19 | 国网江西省电力公司检修分公司 | Intelligent Mobile Robot monitoring system and method based on Centralized Monitoring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shanghai Seiwin Electronic Co., Ltd. Assignor: Wang Xianggui Contract fulfillment period: 2009.9.30 to 2017.9.13 Contract record no.: 2009310000270 Denomination of utility model: Audio signal transmission system Granted publication date: 20080910 License type: Exclusive license Record date: 20091013 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.9.30 TO 2017.9.13; CHANGE OF CONTRACT Name of requester: SHANGHAI SHANGSHENG ELECTRONICS CO., LTD. Effective date: 20091013 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080910 Termination date: 20120913 |