CN104918189A - Microphone distributor - Google Patents
Microphone distributor Download PDFInfo
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- CN104918189A CN104918189A CN201510371627.2A CN201510371627A CN104918189A CN 104918189 A CN104918189 A CN 104918189A CN 201510371627 A CN201510371627 A CN 201510371627A CN 104918189 A CN104918189 A CN 104918189A
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- output interface
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- microphone
- circuit
- attenuation compensation
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Abstract
The invention discloses a microphone distributor including a controller, a multi-path signal receiving circuit and a multi-path output interface. The microphone distributor is characterized in that the output terminal of the controller is connected to a driving circuit; the output terminal of the driving circuit is connected with a duplex relay; the signal receiving circuit is connected with an attenuation compensation circuit through the duplex relay; the attenuation compensation circuit is connected with a first output interface through an isolation transformer; attenuation compensation circuit is also connected with a second output interface. The microphone distributor meets development requirements of automatic audio detection device.
Description
Technical field
The present invention relates to microphone distributor field, particularly, relate to a kind of microphone distributor.
Background technology
The audio signal of conference audio system detects and safeguards is the difficult problem always perplexing engineers and technicians, it is mainly reflected in the following aspects: one, link are many, large-scale audio system is made up of multiple active or passive setting, each link is indispensable, a link goes wrong, and directly can affect the normal use of whole system; Two, existing tester test event is complicated, existing test instrumentation test event is numerous, technical staff needs from many index data, filter out the critical data affecting audio system, higher to the requirement of professional and technical personnel, too increases the difficulty of malfunction elimination simultaneously; Its three, cannot evaluate for system mode, at present, the degree of aging of audio system cannot carry out objective evaluation by system means, only has and is judged by subjective sense of hearing, cannot accomplish guarantee in advance.
For the ease of detecting the audio signal of conference audio system and safeguarding, be necessary research a set of can automatically to the equipment that the audio frequency apparatus of video conferencing system detects.But existing microphone equipment, does not meet the research and development needs of automated audio checkout equipment.
Summary of the invention
The present invention provides a kind of microphone distributor to solve the problems of the technologies described above, and it meets the research and development needs of automated audio checkout equipment.
The present invention's adopted technical scheme that solves the problem is:
A kind of microphone distributor, comprise controller, multiple signals receiving circuit, it is characterized in that: described controller output end is connected on drive circuit, the output of described drive circuit is connected with duplex relay, described signal receiving circuit is connected with attenuation compensation circuit by duplex relay, described attenuation compensation circuit is connected with the first output interface by isolating transformer, and described attenuation compensation circuit is also connected with the second output interface.
As preferably, the first described output interface is connected and the second output interface is XLR needle stand.
As preferably, described isolating transformer is audio frequency transformer.
Further, the first described output interface adopts 1:1 audio frequency transformer to carry out coupling output.
To sum up, the invention has the beneficial effects as follows:
The working condition of controller microphone distributor of the present invention controls, controller sends signal makes drive circuit drive duplex relay switch, after signal receiving circuit receives the voice signal of microphone, export through two output channels after the decay of attenuation compensation circuit to signal compensates, one, the first output interface is exported to through isolating transformer, as microphone detection signal, supply automated audio checkout equipment; Its two, directly export to the second output interface, namely directly output to sound console input without rfpa output signal.Signal adopts doubleway output, meets the research and development needs of automated audio checkout equipment, and adopts isolating transformer isolation signals, guarantees that audio signal exports without compression, nothing delay, undistorted distribution, exports to automated audio checkout equipment, be convenient to on-line real-time measuremen.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1:
A kind of microphone distributor as shown in Figure 1, comprise controller, multiple signals receiving circuit, it is characterized in that: described controller output end is connected on drive circuit, the output of described drive circuit is connected with duplex relay, described signal receiving circuit is connected with attenuation compensation circuit by duplex relay, described attenuation compensation circuit is connected with the first output interface by isolating transformer, and described attenuation compensation circuit is also connected with the second output interface.
The present invention improves on the basis of existing microphone distributor, with the research and development needs making it meet automated audio checkout equipment.The working condition of controller microphone distributor controls, controller sends signal makes drive circuit drive duplex relay switch, after signal receiving circuit receives the voice signal of microphone, export through two output channels after the decay of attenuation compensation circuit to signal compensates.One, exports the first output interface to through isolating transformer, as microphone detection signal, and supply automated audio checkout equipment; Its two, directly export to the second output interface, namely directly output to sound console input without rfpa output signal.Signal adopts doubleway output, and adopt isolating transformer isolation signals, guarantee that audio signal is without compression, without delay, undistorted distribution output, export to automated audio checkout equipment, be convenient to on-line real-time measuremen, with the phenomenon that notes abnormalities in time to remind staff, and provide audio-frequency information to automated audio checkout equipment, be convenient to analyze unusual condition, so that staff keeps in repair it.
Embodiment 2:
A kind of microphone distributor as shown in Figure 1, the present embodiment has done refinement on the basis of above-described embodiment, and the first namely described output interface is connected and the second output interface is XLR needle stand.First output interface is connected and the second output interface all adopts the mode of XLR needle stand to transmit, and the high-fidelity being conducive to audio signal exports.
In order to reduce the distortion of signal, described isolating transformer is audio frequency transformer.
The first described output interface adopts 1:1 audio frequency transformer to carry out coupling output.
As mentioned above, the present invention can be realized preferably.
Claims (4)
1. a microphone distributor, comprise controller, multiple signals receiving circuit, it is characterized in that: described controller output end is connected on drive circuit, the output of described drive circuit is connected with duplex relay, described signal receiving circuit is connected with attenuation compensation circuit by duplex relay, described attenuation compensation circuit is connected with the first output interface by isolating transformer, and described attenuation compensation circuit is also connected with the second output interface.
2. a kind of microphone distributor according to claim 1, is characterized in that: the first described output interface is connected and the second output interface is XLR needle stand.
3. a kind of microphone distributor according to claim 1, is characterized in that: described isolating transformer is audio frequency transformer.
4. a kind of microphone distributor according to claim 3, is characterized in that: the first described output interface adopts 1:1 audio frequency transformer to carry out coupling output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510371627.2A CN104918189A (en) | 2015-06-30 | 2015-06-30 | Microphone distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510371627.2A CN104918189A (en) | 2015-06-30 | 2015-06-30 | Microphone distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104918189A true CN104918189A (en) | 2015-09-16 |
Family
ID=54086814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510371627.2A Pending CN104918189A (en) | 2015-06-30 | 2015-06-30 | Microphone distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104918189A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201374808Y (en) * | 2008-12-26 | 2009-12-30 | 广州励丰声光科技有限公司 | Automatic phantom power supply selected microphone distributor |
| CN201718029U (en) * | 2010-04-26 | 2011-01-19 | 宁波音王集团有限公司 | Multi-channel audio signal distributor |
| CN204733364U (en) * | 2015-06-30 | 2015-10-28 | 成都普创通信技术股份有限公司 | Based on the microphone distributor of video conferencing system audio detection equipment |
-
2015
- 2015-06-30 CN CN201510371627.2A patent/CN104918189A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201374808Y (en) * | 2008-12-26 | 2009-12-30 | 广州励丰声光科技有限公司 | Automatic phantom power supply selected microphone distributor |
| CN201718029U (en) * | 2010-04-26 | 2011-01-19 | 宁波音王集团有限公司 | Multi-channel audio signal distributor |
| CN204733364U (en) * | 2015-06-30 | 2015-10-28 | 成都普创通信技术股份有限公司 | Based on the microphone distributor of video conferencing system audio detection equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150916 |
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| RJ01 | Rejection of invention patent application after publication |