CN100557902C - An audio signal adapter and an audio signal transmission system using the adapter - Google Patents
An audio signal adapter and an audio signal transmission system using the adapter Download PDFInfo
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- CN100557902C CN100557902C CNB2007100713136A CN200710071313A CN100557902C CN 100557902 C CN100557902 C CN 100557902C CN B2007100713136 A CNB2007100713136 A CN B2007100713136A CN 200710071313 A CN200710071313 A CN 200710071313A CN 100557902 C CN100557902 C CN 100557902C
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- 230000005236 sound signal Effects 0.000 title claims abstract description 48
- 230000005540 biological transmission Effects 0.000 title claims abstract description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 60
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 238000004804 winding Methods 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 230000008054 signal transmission Effects 0.000 description 9
- 230000035699 permeability Effects 0.000 description 4
- 229910000976 Electrical steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001755 vocal effect Effects 0.000 description 2
- PGTXKIZLOWULDJ-UHFFFAOYSA-N [Mg].[Zn] Chemical class [Mg].[Zn] PGTXKIZLOWULDJ-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
本发明公开了一种音频信号转接器，壳体内设置有音频滤波装置，多芯输入接口与音频滤波装置的输入端连接，音频滤波装置的输出端与输出接口连接，音频滤波装置由至少一个以上的音频变压器组成，音频变压器的一次绕组与二次绕组的匝数比为1∶1，音频变压器的铁心采用镍钢片，镍钢片中镍的质量百分比为45%～78%，其优点剔除了杂音和干扰信号，音频信号品质得到改善，起到滤除杂波的作用，在多芯输入接口与多个输出接口之间设置音频变压器可以实现在200m2内及以上的范围内保持信号不变，保持原声效果，音频信号转接器应用在音频信号传输系统中，能使整个音频系统的音频质量得到很大的提高。
The invention discloses an audio signal adapter. An audio filter device is arranged in a casing, a multi-core input interface is connected to an input end of the audio filter device, an output end of the audio filter device is connected to an output interface, and the audio filter device consists of at least one The audio transformer is composed of the above audio transformer. The turns ratio of the primary winding and the secondary winding of the audio transformer is 1:1. The iron core of the audio transformer is made of nickel steel sheet. Noise and interference signals are eliminated, the quality of audio signals is improved, and it plays the role of filtering clutter. An audio transformer is set between the multi-core input interface and multiple output interfaces to maintain the signal within 200m2 and above. The original sound effect remains unchanged, and the audio signal adapter is applied in the audio signal transmission system, which can greatly improve the audio quality of the entire audio system.
Description
Technical field
The present invention relates to a kind of audio frequency equipment, especially relate to a kind of audio signal adapter and use the audio frequency signal transmission system of this adapter.
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 a plurality of bodies of terminal equipment, as microphone and audio amplifier, just need be provided with the audio signal adapter of a multicore input interface and a plurality of audio signal output interfaces, existing audio signal adapter only plays the effect of audio signal transfer, audio signal is improved, because large-scale 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, making an uproar property all can be brought 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.
Summary of the invention
Technical problem to be solved by this invention provides a kind of audio frequency signal transmission system that can make the improved audio signal adapter of audio signal and use this adapter.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of audio signal adapter, comprise housing and multicore input interface and at least one output interface of being arranged on the described housing, be provided with the audio frequency filter in the described housing, described multicore input interface is connected with the input of described audio frequency filter, the output of described audio frequency filter is connected with described output interface, described audio frequency filter is made up of at least more than one audio frequency transformer, the winding of described audio frequency transformer and the turn ratio of secondary winding are 1: 1, the iron core of described audio frequency transformer adopts the nickel steel sheet, the mass percent of nickel is 45%～78% in the described nickel steel sheet, every core of described multicore input interface includes signal end and earth terminal, described output interface comprises signal end and earth terminal, described audio frequency transformer comprises input, output and ground wire, the signal end of every core of described multicore input interface is connected with the input of described audio frequency transformer, the output of described audio frequency transformer is connected with the signal end of described output interface, the ground wire of described audio frequency transformer interconnects, and the ground wire of described audio frequency transformer is connected with the earth terminal of described output interface and the earth terminal of every core of described multicore input interface respectively.
The mass percent of nickel is 78% in the described nickel steel sheet.
The mass percent of nickel is 45% in the described nickel steel sheet.
Described multicore input interface adopts split conductor aviation socket, and described output interface adopts combo socket.
The ground wire of described one of them audio frequency transformer is provided with switch, and described switch is arranged on the described housing.
A kind of 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, be provided with the audio frequency filter between the input of described audio-frequency signal converter and the output, it is characterized in that described audio frequency filter is made up of at least more than one audio frequency transformer, the winding of described audio frequency transformer and the turn ratio of secondary winding are 1: 1, the iron core of described audio frequency transformer adopts the nickel steel sheet, the mass percent of nickel is 45%～78% in the described nickel steel sheet, every core of described multicore input interface includes signal end and earth terminal, described output interface comprises signal end and earth terminal, described audio frequency transformer comprises input, output and ground wire, the signal end of every core of described multicore input interface is connected with the input of described audio frequency transformer, the output of described audio frequency transformer is connected with the signal end of described output interface, the ground wire of described audio frequency transformer interconnects, and the ground wire of described audio frequency transformer is connected with the earth terminal of described output interface and the earth terminal of every core of described multicore input interface respectively.
Compared with prior art, the invention has the advantages that to be provided with the audio frequency filter in the audio signal adapter, make the isolation processing of signal through the audio frequency filter, rejected noise and interference signal, the audio signal quality improves, and plays the effect of filtering clutter.Between multicore input interface and a plurality of output interface, the audio frequency transformer that can improve signal quality is set and 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, for example silicon steel sheet, ferrocart core, MnZn and magnesium zinc series, as adopting nickeliferous 78% nickel steel sheet on the composition, could more effective trap signal noise.It can control magnetic property effectively, such as surpass 105 initial permeability, surpass 106 maximum permeability, low coercive force to 2 ‰ oersteds, near 1 or near 0 squareness factor, nickel steel sheet with face-centered cubic crystal structure has good plasticity, can be processed into ultra-thin band and the various use form of 1 μ m.Magnetic permeability is higher tens times than silicon steel sheet, and iron loss is also than low 2～3 times of silicon steel.No-load current is little, is suitable for doing the low frequency or the high frequency input and output of weak signal.
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.
The audio signal adapter that is provided with audio frequency transformer is applied in the audio frequency signal transmission system, and the audio quality of whole system is greatly improved, and brings the vocal music of high-quality to enjoy to spectators.
Description of drawings
Fig. 1 is the vertical view of audio signal adapter of the present invention;
Fig. 2 is the stereogram of audio signal adapter of the present invention;
Fig. 3 is the internal structure schematic diagram of audio signal adapter of the present invention;
Fig. 4 is the circuit diagram of audio signal adapter of the present invention;
Fig. 5 is provided with the audio frequency transformer of switch for ground wire of the present invention;
Fig. 6 is the block diagram of audio frequency signal transmission system of the present invention.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Embodiment one: a kind of audio signal adapter 14, comprise housing 1 and multicore input interface 2 and at least one output interface 3 of being arranged on the housing 1, be provided with audio frequency filter 4 in the housing 1, multicore input interface 2 is connected with the input of audio frequency filter 4, and the output of audio frequency filter 4 is connected with output interface.Audio frequency filter 4 is made up of at least more than one audio frequency transformer 9, the winding of audio frequency transformer 9 and the turn ratio of secondary winding are 1: 1, the iron core of audio frequency transformer adopts the nickel steel sheet, the mass percent of nickel is 45% in the nickel steel sheet, every core of multicore input interface 2 includes signal end 6 and earth terminal 7, output interface comprises signal end and earth terminal, audio frequency transformer 9 comprises input, output and ground wire 8, the signal end of every core of multicore input interface 2 is connected with the input of audio frequency transformer 9, the output of audio frequency transformer 9 is connected with the signal end of output interface, the ground wire of audio frequency transformer 9 interconnects, and the ground wire of audio frequency transformer 9 is connected with the earth terminal of output interface and the earth terminal of every core of multicore input interface 2 respectively.Multicore input interface 2 adopts split conductor aviation socket, and output interface 3 adopts the ground wire of one of them audio frequency transformer 9 of combo socket to be provided with switch k, and switch k is arranged on the housing 10.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.
Embodiment two; Other parts are identical with embodiment one, and the mass percent of nickel is 78% in the nickel steel sheet.
A kind of audio frequency signal transmission system, comprise audio signal generator 11, audio control apparatus 12 and voice frequency terminal equipment 13, the output of audio signal generator 11 is connected with the input of audio control apparatus 12, be provided with audio signal adapter 14 between audio control apparatus 12 and the voice frequency terminal equipment 13, the output of audio control apparatus 12 is connected with the input of audio signal adapter 14, the output of audio signal adapter 14 is connected with the input of voice frequency terminal equipment 13, is provided with audio frequency filter 4 between the input of audio-frequency signal converter 14 and the output.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100713136A CN100557902C (en) | 2007-09-13 | 2007-09-13 | An audio signal adapter and an audio signal transmission system using the adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100713136A CN100557902C (en) | 2007-09-13 | 2007-09-13 | An audio signal adapter and an audio signal transmission system using the adapter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101136529A CN101136529A (en) | 2008-03-05 |
| CN100557902C true CN100557902C (en) | 2009-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100713136A Expired - Fee Related CN100557902C (en) | 2007-09-13 | 2007-09-13 | An audio signal adapter and an audio signal transmission system using the adapter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100557902C (en) |
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2007
- 2007-09-13 CN CNB2007100713136A patent/CN100557902C/en not_active Expired - Fee Related
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| CN101136529A (en) | 2008-03-05 |
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Granted publication date: 20091104 Termination date: 20130913 |