CN206533497U - A kind of dual microphone pickup transmitter - Google Patents
A kind of dual microphone pickup transmitter Download PDFInfo
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- CN206533497U CN206533497U CN201621493608.3U CN201621493608U CN206533497U CN 206533497 U CN206533497 U CN 206533497U CN 201621493608 U CN201621493608 U CN 201621493608U CN 206533497 U CN206533497 U CN 206533497U
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- sound pick
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- digital converter
- processing unit
- digital
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- 230000009977 dual effect Effects 0.000 title claims abstract description 12
- 230000005236 sound signal Effects 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000003321 amplification Effects 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
The utility model discloses a kind of dual microphone pickup transmitter, including two support bars, FPGA process chips, analog-digital converter, digital analog converter, display, button and two groups of processing units, a sound pick-up is respectively equipped with each support bar, processing unit is corresponded with sound pick-up, sound pick-up and analog-digital converter are connected with processing unit, display, button and digital analog converter are connected with FPGA process chips, and the audio signal that processing unit is used to export in sound pick-up carries out power amplification and exported after filtering to analog-digital converter.The utility model has two sound pick-ups, two-way audio signal can be received simultaneously, the effect of comprehensive pickup can be reached when single people uses using two sound pick-ups simultaneously, and when two people use the microphone simultaneously, two sound pick-ups can separately be received audio signal respectively, application is wider.
Description
Technical field
The utility model is related to microphone techniques field, more particularly to a kind of dual microphone pickup transmitter.
Background technology
Current microphone sound pick up equipment is usually single microphone pickup, can only apply to single people and use, apply in meeting
It is relative to have limitation during the occasions such as view.The pickup transmitter of current single microphone is cardioid microphone always, and its microphone front end is sensitive
Degree is most strong, and the sensitivity of microphone rear end is most weak, and unnecessary environmental noise is completely cut off with this, and the effect for eliminating echo is talked about better than omnidirectional
Cylinder.And for omni-directional microphone, although with being above a kind of comprehensive pickup transmitter for different directions, but it can not keep away
Exempt from the echo of such as broadcast loudspeaker generation.Also a kind of pickup transmitter of two-way type, respectively from microphone front and microphone rear
Sound is picked up, but can not be limited to from side (an angle of 90 degrees) pickup for the position of pickup, if every two in a meeting-place
It is greatly inconvenient it is necessary to the microphone that swings back and forth during a personal shared pickup transmitter.
Utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of dual microphone pickup transmitter,
It can solve microphone pickup in the prior art and be limited to, it has not been convenient to the problem of using.
The purpose of this utility model is realized using following technical scheme：
A kind of dual microphone pickup transmitter, including two support bars, FPGA process chips, analog-digital converter, digital-to-analogue conversions
A sound pick-up, processing unit and pickup are respectively equipped with device, display, button and two groups of processing units, each support bar
Device is corresponded, and sound pick-up and analog-digital converter be connected with processing unit, and display, button and digital analog converter are and FPGA
Process chip is connected, the audio signal that the processing unit is used to exporting in sound pick-up exported after power amplification and filtering to
Analog-digital converter.
It is preferred that, each group of processing unit includes the operational amplifier and low pass filter being sequentially connected, the computing
Amplifier connects sound pick-up, low pass filter connection analog-digital converter.
It is preferred that, the model ep1c3t144c8n of the fpga chip.
It is preferred that, in addition to the network interface being connected with fpga chip, the network interface is used for and the outside network equipment
Connection.
Compared with prior art, the beneficial effects of the utility model are：
The utility model has two sound pick-ups, two-way audio signal can be received simultaneously, when single people uses simultaneously
The effect of comprehensive pickup can be reached using two sound pick-ups, and when two people use the microphone simultaneously, can be by two
Sound pick-up separately receives audio signal respectively, and application is wider.
Brief description of the drawings
Fig. 1 is the function structure chart of dual microphone pickup transmitter of the present utility model.
Embodiment
Below, with reference to accompanying drawing and embodiment, the utility model is described further：
As shown in figure 1, the utility model provides a kind of dual microphone pickup transmitter, including two support bars, FPGA processing
One is respectively equipped with chip, analog-digital converter, digital analog converter, display, button and two groups of processing units, each support bar
Individual sound pick-up, processing unit is corresponded with sound pick-up, and sound pick-up and analog-digital converter are connected with processing unit, display,
Button and digital analog converter are connected with FPGA process chips, and the audio signal that the processing unit is used to export in sound pick-up is entered
Exported after row power amplification and filtering to analog-digital converter.
FPGA process chips can control two sound pick-ups while opening or single unlatching, can be set by button
Put.Sound pick-up converts sound into audio signal, audio signal by processing unit be amplified with after filtering process, by modulus
Converter carries out analog-to-digital conversion, then is handled by FPGA process signals, loudspeaker can be connected after analog-digital converter, by counting
Weighted-voltage D/A converter, which is converted to export after simulated audio signal to loudspeaker, carries out audio output.Display can setting according to button
Put, show the passage currently opened, for example, currently all opened for two sound pick-ups, then it is all to open to show two sound pick-up passages
State, if sound pick-up A is closed, another sound pick-up B is opened, then shows that sound pick-up A channel is closed, sound pick-up channel B is opened.
The inside of two groups of processing units is constituted, all including the operational amplifier and low pass filter that are sequentially connected,
Operational amplifier connects sound pick-up, low pass filter connection analog-digital converter.
The multiplication factor of operational amplifier determines by the input range of analog-digital converter, meanwhile, multiplication factor is bigger, pickup
Device pickup distance is more remote, but has saturation distortion risk for closely pickup.Audio signal after amplification passes through low pass filtered
Ripple device filters out HFS, and current audio incoming frequency scope is 80HZ to 20KHZ, therefore is needed more than 20KHZ frequency
Filter tank, reduces high frequency noise.
When two sound pick-ups are opened, and have the input of two-way audio signal simultaneously, analog-digital converter point two-way is input to FPGA
In chip, when only one of which sound pick-up is opened, and only audio signal is inputted all the way, analog-digital converter is only input to all the way
In fpga chip.Fpga chip does voice data processing in different modes.The model of fpga chip can be
ep1c3t144c8n.Fpga chip can be substituted with single-chip microcomputer or DSP process chips.
In addition, the utility model may also include the network interface being connected with fpga chip, the network interface is used for and outside
Network equipment connection, network audio can be exported or the audio signal after can FPGA be handled is sent on network.
The network equipment is broadcasted audio signal as the output end of audio.
It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various
It is corresponding to change and deformation, and all these change and deformation should all belong to the protection of the utility model claim
Within the scope of.
Claims (4)
1. a kind of dual microphone pickup transmitter, it is characterised in that including two support bars, FPGA process chips, analog-digital converter,
A sound pick-up is respectively equipped with digital analog converter, display, button and two groups of processing units, each support bar, processing is single
Member is corresponded with sound pick-up, and sound pick-up and analog-digital converter are connected with processing unit, display, button and digital analog converter
It is connected with FPGA process chips, the audio signal that the processing unit is used to export in sound pick-up carries out power amplification and filtering
After export to analog-digital converter.
2. dual microphone pickup transmitter as claimed in claim 1, it is characterised in that each group of processing unit includes connecting successively
The operational amplifier and low pass filter connect, the operational amplifier connects sound pick-up, low pass filter connection analog-digital converter.
3. dual microphone pickup transmitter as claimed in claim 1, it is characterised in that the model of the fpga chip
ep1c3t144c8n。
4. dual microphone pickup transmitter as claimed in claim 1, it is characterised in that the also network including being connected with fpga chip
Interface, the network interface is used to be connected with the outside network equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621493608.3U CN206533497U (en) | 2016-12-30 | 2016-12-30 | A kind of dual microphone pickup transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621493608.3U CN206533497U (en) | 2016-12-30 | 2016-12-30 | A kind of dual microphone pickup transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206533497U true CN206533497U (en) | 2017-09-29 |
Family
ID=59920200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621493608.3U Active CN206533497U (en) | 2016-12-30 | 2016-12-30 | A kind of dual microphone pickup transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206533497U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109168111A (en) * | 2018-11-22 | 2019-01-08 | 江门市捷思通电子科技有限公司 | A kind of microphone control circuit |
| CN114143643A (en) * | 2021-12-09 | 2022-03-04 | 武汉汇通阳光科技有限公司 | Adjustable pickup equipment based on double-microphone array |
| CN115734115A (en) * | 2022-12-28 | 2023-03-03 | 深圳市亚昱科技有限公司 | Pickup method and device of microphone and microphone |
-
2016
- 2016-12-30 CN CN201621493608.3U patent/CN206533497U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109168111A (en) * | 2018-11-22 | 2019-01-08 | 江门市捷思通电子科技有限公司 | A kind of microphone control circuit |
| CN114143643A (en) * | 2021-12-09 | 2022-03-04 | 武汉汇通阳光科技有限公司 | Adjustable pickup equipment based on double-microphone array |
| CN114143643B (en) * | 2021-12-09 | 2024-06-07 | 武汉汇通阳光科技有限公司 | Adjustable pickup device based on double microphone arrays |
| CN115734115A (en) * | 2022-12-28 | 2023-03-03 | 深圳市亚昱科技有限公司 | Pickup method and device of microphone and microphone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhao Dingjin Inventor after: Zhang Changhua Inventor after: Zhu Zhenghui Inventor after: Lin Haiqing Inventor before: Lin Haiqing |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 56 Nanli East Road, Shiqi Town, Panyu District, Guangzhou City, Guangdong Province, 510000 Patentee after: Guangdong Baolun Electronics Co.,Ltd. Address before: 510000 Building 1, industrial zone B, Zhongcun street, Panyu District, Guangzhou City, Guangdong Province Patentee before: GUANGZHOU ITC ELECTRONIC TECHNOLOGY Co.,Ltd. |