CN217335738U

CN217335738U - Screen-free noise reduction network telephone conference machine mainboard and telephone conference machine

Info

Publication number: CN217335738U
Application number: CN202220918511.1U
Authority: CN
Inventors: 吴桥
Original assignee: Shenzhen Haikelaite Technology Development Co ltd
Current assignee: Shenzhen Haikelaite Technology Development Co ltd
Priority date: 2022-04-20
Filing date: 2022-04-20
Publication date: 2022-08-30
Anticipated expiration: 2032-04-20

Abstract

The utility model discloses a non-screen noise reduction network telephone conference machine mainboard and a non-screen noise reduction network telephone conference machine, which comprises an acquisition module, a processing module and a playing module, wherein the processing module is respectively connected with the acquisition module and the playing module; the acquisition module is used for acquiring human voice data and noise data; processing module is used for falling the noise treatment of making an uproar to voice data and noise data, obtains voice digital data to broadcast voice digital data through the broadcast module, through the utility model provides a two microphone array collection voices possess the environment and fall the function of making an uproar, carry out voice conversation through the LAN networking, can also play contents such as network song, audio frequency, fall the noise to ambient noise, improve meeting sound quality.

Description

Screen-free noise-reduction network teleconference machine mainboard and teleconference machine

Technical Field

The utility model relates to a control technology field especially relates to a no screen network teleconference machine mainboard of making an uproar and no screen network teleconference machine of making an uproar falls.

Background

In the prior art, when an indoor multi-person teleconference is carried out, a plurality of microphones are needed, so that conference sound heard by people in other meeting places is not only influenced by environmental noise, but also influenced by the microphones, and the sound quality of the conference is influenced. How to provide conference sound quality in a teleconference is a problem to be solved at present.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model provides a no screen network teleconference machine mainboard and no screen network teleconference machine of making an uproar that falls of making an uproar falls.

The utility model provides a screen-free noise reduction network telephone conference machine mainboard, which comprises an acquisition module, a processing module and a playing module, wherein the processing module is respectively connected with the acquisition module and the playing module;

the acquisition module is used for acquiring human voice data and noise data;

the processing module is used for carrying out noise reduction processing on the voice data and the noise data to obtain voice digital data, and the voice digital data is played through the playing module.

Optionally, the main board further includes a display module, the display module is connected to the processing module, and the display module is configured to display a working state of the main board.

Optionally, the acquisition module comprises at least two analog microphones, the two analog microphones being respectively used for acquiring human voice data and the noise data, wherein the noise data comprises at least ambient noise and horn noise.

Optionally, the motherboard further includes a power management module, where the power management module includes at least 2 dc-to-dc power circuits, and the power management modules are respectively configured to provide 3.3V and 1.1V stable power supplies for the respective modules.

Optionally, the main board further includes an analog-to-digital conversion module, and the analog-to-digital conversion module is configured to convert the collected analog voice data into digital voice data and transmit the digital voice data to the processing module.

Optionally, the analog-to-digital conversion module includes an analog-to-digital conversion chip, and the analog-to-digital conversion chip is ES 7210.

Optionally, the processing module is a CSK4002 chip.

Optionally, a twenty-ninth pin of the processing module is connected to a fourth pin of the analog-to-digital conversion module;

the thirtieth pin of the processing module is connected with the third pin of the analog-to-digital conversion module;

the thirty-fourth pin of the processing module is connected with the ninth pin of the analog-to-digital conversion module;

a thirty-third pin of the processing module is connected with a tenth pin of the analog-to-digital conversion module;

the thirty-seventh pin of the processing module is connected with the fifth pin of the analog-to-digital conversion module;

and the thirty-sixth pin of the processing module is connected with the eleventh pin of the analog-to-digital conversion module.

Optionally, the thirty-fourth pin of the processing module is connected to the second pin of the playing module;

the thirty-third pin of the processing module is connected with the third pin of the playing module;

the thirty-seventh pin of the processing module is connected with the fourth pin of the playing module;

and the thirty-fifth pin of the processing module is connected with the first pin of the playing module.

The utility model also provides a no screen network teleconference machine of making an uproar falls, the no screen network teleconference machine mainboard of making an uproar falls including the first aspect.

The utility model has the advantages that:

the embodiment of the utility model provides a no screen noise reduction internet protocol phone conference machine mainboard and no screen noise reduction internet protocol phone conference machine, including collection module, processing module and broadcast module, processing module links to each other with collection module and broadcast module respectively; the acquisition module is used for acquiring human voice data and noise data; processing module is used for carrying out noise reduction to people's acoustic data and noise data, obtains people's acoustic digital data to broadcast people's acoustic digital data through broadcast module, through the embodiment of the utility model provides a two microphone array collection people's voice possesses the environment and falls the function of making an uproar, carries out voice conversation through the LAN networking, can also broadcast contents such as network song, audio frequency, falls the noise of environmental noise, improves meeting sound quality.

Drawings

Fig. 1 is a schematic structural diagram of a main board of a non-screen noise reduction network telephone conference machine in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a main board of a network telephone conference machine without a screen and noise reduction in an embodiment of the present invention;

fig. 3 is a schematic circuit connection diagram of an analog-to-digital conversion module according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a circuit connection of a processing module according to an embodiment of the present invention;

fig. 5 is a schematic circuit connection diagram of the playing module in the embodiment of the present invention;

fig. 6 is a schematic circuit diagram of a power management module according to an embodiment of the present invention;

fig. 7 is a schematic diagram of another circuit connection of the power management module according to the embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, an embodiment of the present invention provides a screen-less noise reduction main board of a network telephone conference machine, including an acquisition module 101, a processing module 102 and a playing module 103, where the processing module 102 is connected to the acquisition module 101 and the playing module 103 respectively;

the acquisition module 101 is used for acquiring human voice data and noise data;

the processing module 102 is configured to perform noise reduction processing on the human voice data and the noise data to obtain human voice digital data, and play the human voice digital data through the playing module 103.

In the embodiment of the invention, the network telephone conference box, namely the screen-free noise reduction network telephone conference machine, which is low in cost, simple to install, safe and stable in conversation is provided. The conference box is accessed to a computer of a WINDOWS system or a macOS system through a USB data line, power is supplied to the conference box through a USB interface of the computer, the conference box adopts a double-microphone array, a signal amplifier and an automatic gain adjustment technology, and a speaker does not need to speak close to a microphone; through two wheat pickup, based on the complete filtering environment noise of the technique of making an uproar that falls of the latest maturity of CSK4002, solve the problem of the spaciousness of conference phone pickup and environment noise completely. The 5W high-fidelity loudspeaker is arranged in the earphone, and can be switched to an audio signal output interface and connected with a wired earphone. By adopting a unique digital signal processing technology, a perfect meeting place full-duplex conversation solution is provided.

Wherein, the two microphone arrays gather the human voice, possess the environment and fall the function of making an uproar.

And the processing module performs noise reduction processing on the voice data and the noise data to obtain voice digital data, and plays the voice digital data through the playing module.

The method specifically comprises the following steps: echo cancellation, noise reduction technology completely filters out environmental noise, excellent echo cancellation technology of the system ensures telephone conversation effect, and ringing (howling) phenomenon between a microphone and a sound box is completely eliminated. Spatial reflected sound cancellation; providing the clearest sound collecting effect.

The microphone amplifying circuit adopts the automatic gain adjustment technology, the speaker is far away from or close to the microphone, and the volume transmitted to the opposite side has no obvious change. The microphone and the loudspeaker can be used for meeting without a conference microphone and an active sound box.

Optionally, the acquisition module comprises at least two analog microphones, and the two analog microphones are respectively used for acquiring human voice data and noise data, wherein the noise data at least comprises environmental noise and horn noise.

Optionally, the main board further includes an analog-to-digital conversion module, and the analog-to-digital conversion module is configured to convert the acquired analog human voice data into digital human voice data and transmit the digital human voice data to the processing module. The analog-to-digital conversion module comprises an analog-to-digital conversion chip, and the analog-to-digital conversion chip is ES 7210. As shown in fig. 3, fig. 3 is a schematic circuit connection diagram of the analog-to-digital conversion module according to an embodiment of the present invention.

Optionally, the processing module is a CSK4002 chip. As shown in fig. 4, fig. 4 is a schematic circuit connection diagram of a processing module according to an embodiment of the present invention.

With reference to fig. 3 and fig. 4, the twenty ninth pin CSK _ SCL2 of the processing module is connected to the fourth pin ADC _ SCL of the analog-to-digital conversion module; the thirtieth pin CSK _ SDA2 of the processing module is connected with the third pin ADC _ SDA of the analog-to-digital conversion module; a thirty-fourth pin CSK _ SCLK of the processing module is connected with a ninth pin ADC _ SCLK of the analog-to-digital conversion module; the thirty-third pin CSK _ LRCK of the processing module is connected with the tenth pin ADC _ LRCK of the analog-to-digital conversion module; the thirty-seventh pin CSK _ MCLK of the processing module is connected with the fifth pin ADC _ MCLK of the analog-to-digital conversion module; the thirty-sixth pin CSK _ DATAIN of the processing module is connected to the eleventh pin ADC _ DIN of the analog-to-digital conversion module.

With reference to fig. 4 and fig. 5, the playing module includes an ET4344, and a thirty-fourth pin CSK _ SCLK of the processing module is connected to a second pin DA _ SCLK of the playing module;

the thirty-third pin CSK _ LRCK of the processing module is connected with the third pin DA _ LRCK of the playing module;

the thirty-seventh pin CSK _ MCLK of the processing module is connected with the fourth pin DA _ MCLK of the playing module;

the thirty-fifth pin CSK _ DATAOUT of the processing module is connected to the first pin DA _ DATAOUT of the playing module.

Fig. 6 and fig. 7 are the embodiment of the utility model provides an in the circuit connection schematic diagram of power management module, as shown in fig. 6, the mainboard still includes power management module, power management module includes 2 dc-to-dc power supply circuit of group at least, is used for providing 3.3V and 1.1V regulated power supply for each module respectively.

Fig. 2 is the embodiment of the utility model provides an in the structure schematic diagram of no screen noise reduction network telephone conference machine mainboard again, the utility model discloses the function contains:

1) the dual microphones collect human voice and have the function of environmental noise reduction.

2) The LED display device is provided with a traditional LED for indicating the working state.

3) The audio call is carried out through the LAN, and contents such as network songs, audios and the like can also be played.

4) The power management system consists of 2 groups of DC to DC power circuits and is responsible for providing 3.3V and 1.1V stable power supplies for each unit circuit.

The microphone array is composed of 2 analog microphones and used for collecting human voice, 2 paths of analog audio are input into the A/D conversion chip, the other path of the A/D conversion chip collects a loudspeaker signal, then digital sound is transmitted to the CSK4002 chip, environmental noise and the loudspeaker signal are processed through a noise elimination algorithm, and then the audio digital signal is transmitted out through a wired network.

The system processor CSK4002 is a 32-bit high-performance RISC-V CPU processor, and is responsible for all data processing of the entire system, including digital-to-analog audio signals, and transceiving digital signals. And the received audio signal is amplified by a power amplifier to drive a loudspeaker to produce sound.

Compared with similar products on the market, the product has the following advantages:

the speech recognition rate in noisy environments is high.

The cost performance of the whole machine is high.

A high-fidelity 5W loudspeaker is arranged in the loudspeaker.

The appearance is novel, and the panel is succinct atmosphere, and the operation is simple and easy convenient.

The panel design is succinct atmosphere on the structure, and the functional key feature of this product is as follows:

1) the double-microphone array collects human voice and has the function of environmental noise reduction.

3) The voice call is carried out through the LAN networking, and contents such as network songs, audios and the like can also be played.

4) RTOS small system.

The embodiment of the utility model provides a no screen noise reduction internet protocol phone conference machine mainboard and no screen noise reduction internet protocol phone conference machine, including collection module, processing module and broadcast module, processing module links to each other with collection module and broadcast module respectively; the acquisition module is used for acquiring human voice data and noise data; processing module is used for falling the noise treatment of making an uproar to voice data and noise data, obtains voice digital data to broadcast voice digital data through the broadcast module, through the utility model provides a two microphone array collection voices possess the environment and fall the function of making an uproar, carry out voice conversation through the LAN networking, can also play contents such as network song, audio frequency, fall the noise to ambient noise, improve meeting sound quality.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A screen-free noise reduction network telephone conference machine mainboard is characterized by comprising: the system comprises an acquisition module, a processing module and a playing module, wherein the processing module is respectively connected with the acquisition module and the playing module;

the acquisition module is used for acquiring human voice data and noise data;

2. The main board of the screen-less and noise-reducing network teleconference device of claim 1, further comprising a display module, wherein the display module is connected to the processing module, and the display module is used for displaying the working state of the main board.

3. The main board of the screenless noise reduction network teleconference machine according to claim 1, wherein the acquisition module comprises at least two analog microphones, the two analog microphones being used for acquiring human voice data and the noise data respectively, wherein the noise data comprises at least ambient noise and loudspeaker noise.

4. The main board of the screen-less and noise-reducing network teleconference device of claim 1, further comprising a power management module, wherein the power management module at least comprises 2 groups of direct current to direct current power circuits, and the power management module is respectively used for providing 3.3V and 1.1V stable power for each module.

5. The main board of the screen-less and noise-reducing network teleconference device of claim 1, further comprising an analog-to-digital conversion module, wherein the analog-to-digital conversion module is configured to convert the collected analog human voice data into digital human voice data and transmit the digital human voice data to the processing module.

6. The main board of the screen-less and noise-reducing network teleconference device of claim 5, wherein the analog-to-digital conversion module comprises an analog-to-digital conversion chip, and the analog-to-digital conversion chip is ES 7210.

7. The mainboard of claim 1, wherein the processing module is a CSK4002 chip.

8. The main board of the screen-less noise-reduction network teleconference device of claim 7, wherein a twenty-ninth pin of the processing module is connected with a fourth pin of the analog-to-digital conversion module;

9. The main board of the screen-less and noise-reducing network telephone conference machine according to claim 1, wherein the thirty-fourth pin of the processing module is connected to the second pin of the playing module;

10. A screenless noise reduction network teleconference device, comprising the screenless noise reduction network teleconference device main board according to any one of claims 1 to 9.