CN214960095U

CN214960095U - Conference system with multi-channel audio output

Info

Publication number: CN214960095U
Application number: CN202121289617.1U
Authority: CN
Inventors: 范卓明; 林健洲; 孔杰锋
Original assignee: Enping Restmoment Electron Co ltd
Current assignee: Enping Restmoment Electron Co ltd
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2021-11-30
Anticipated expiration: 2031-06-08

Abstract

The utility model discloses a conference system with multi-channel audio output, which comprises a host, a microprocessor, an audio demultiplexing circuit, a plurality of audio output circuits and a plurality of microphones, wherein the microprocessor and the audio demultiplexing circuit are arranged in the host, the signal output end of the microprocessor is connected with the audio demultiplexing circuit, the output end of the audio demultiplexing circuit is connected with the audio output circuits, the conference system with multi-channel audio output of the utility model, the conference system adopts a full digital transmission mode, supports the simultaneous starting of up to 128 microphones, enables the audio frequency of each microphone to be output independently, enables each host to output 16 microphone signals, can be cascaded with up to 128 hosts, supports the same signal and can be output on any host, the system outputs the sound of each microphone independently and adjusts the sound independently, and the problem that the feedback inhibition of a plurality of microphones is difficult to adjust is effectively solved.

Description

Conference system with multi-channel audio output

Technical Field

The utility model relates to a conference system field specifically is a multichannel audio output's conference system.

Background

In the current conference place, a conference system adopting a hand-in-hand connection mode is also called a desktop conference sound amplification system, because the conference system is widely applied due to the convenience of installation and operation, in the hand-in-hand conference system, a plurality of conference microphones can be simultaneously opened. An international advanced conference system transmits a multiplexed audio signal to a conference system host through one cable by using a multiplexing technique, and performs audio mixing at the conference system host. Such conference system hosts also typically have an external audio input interface for wireless microphone or other audio source signal input. Meanwhile, at present, the main computer of the conference system only has mixed sound output, that is: and outputting audio signals of the conference microphones which are switched on by a plurality of branches and mixed sound signals of external audio input signals. The audio output signal is connected to an audio mixing console, power amplifier for on-site sound amplification, or input to a recorder for conference recording. At present, a conference system on the market can generally support that 3-8 microphones are started simultaneously, all sounds after the microphones are started are mixed and output, products are mixed and output in a multi-path signal mode, the traditional mixed output mode causes great difficulty in tuning, after the optimal feedback inhibition effect is adjusted for a certain microphone, the feedback inhibition cannot be adjusted to achieve a good effect when another microphone is started.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a conference system of multichannel audio output to traditional mixed output mode that proposes in solving above-mentioned background art causes great degree of difficulty to the tuning, often to a certain microphone regulation best feedback inhibition effect after, another microphone is opened then the problem that feedback inhibition can't call out better effect.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a conference system of multichannel audio output, includes host computer, microprocessor, audio frequency demultiplexing circuit, a plurality of audio output circuit and a plurality of microphone, the inside of host computer is equipped with microprocessor and audio frequency demultiplexing circuit, microprocessor's signal output part is connected with audio frequency demultiplexing circuit, audio frequency demultiplexing circuit's output is connected with a plurality of audio output circuit, a plurality of audio output circuit's signal output part all is connected with the microphone, the signal output part of a plurality of microphone all with memory electric connection, a plurality of the inside of microphone all is provided with volume control device.

As a preferred technical scheme of the utility model, a plurality of volume control device all includes speaker, controller and volume identification module, speaker and volume identification module all with controller electric connection.

As an optimized technical scheme of the utility model, the controller is the PID controller.

As an optimized technical solution of the present invention, the output end of the audio frequency demultiplexing circuit is an RCA interface, a BNC interface, an XLR interface or a wire terminal.

As an optimized technical scheme of the utility model, one side of memory is provided with the USB interface.

Compared with the prior art, the beneficial effects of the utility model are that: this conference system adopts the all-digital transmission mode, it reaches 128 at most to support to open the microphone quantity simultaneously, the audio frequency of every microphone can be exported alone, 16 microphone signals can be exported to every host computer, 128 host computers at most can cascade, it can export on arbitrary host computer to support same signal, this system exports the sound of every microphone alone, independent regulation, effectively solve the difficult problem of adjusting of a plurality of microphone feedback suppression, wherein discern the volume of audio frequency through volume identification module, and feed back the controller with the result of discerning, come to discern information and compare with the standard value through the controller, adjust the speaker according to the result of comparing again, avoid the volume too big or undersize to lead to using inconveniently.

Drawings

FIG. 1 is a block diagram of the present invention;

fig. 2 is a connection diagram of the internal structure of the volume adjusting device of the present invention.

In the figure: 1. a host; 2. a microprocessor; 3. an audio demultiplexing circuit; 4. an audio output circuit; 5. a microphone; 6. a volume adjustment device; 7. a memory; 8. a speaker; 9. a controller; 10. and a volume identification module.

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 a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-2, the utility model provides a conference system of multichannel audio output, including host computer 1, microprocessor 2, audio frequency demultiplexing circuit 3, a plurality of audio output circuit 4 and a plurality of microphone 5, host computer 1's inside is equipped with microprocessor 2 and audio frequency demultiplexing circuit 3, microprocessor 2's signal output part is connected with audio frequency demultiplexing circuit 3, audio frequency demultiplexing circuit 3's output is connected with a plurality of audio output circuit 4, a plurality of audio output circuit 4's signal output part all is connected with microphone 5, a plurality of microphone 5's signal output part all with memory 7 electric connection, a plurality of microphone 5's inside all is provided with volume control device 6.

Preferably, a plurality of volume adjusting devices 6 all include speaker 8, controller 9 and volume identification module 10, and speaker 8 and volume identification module 10 all are connected with controller 9 electric connection, come to discern the volume of audio frequency through volume identification module 10 to feed back the result of discerning to controller 9, come information discernment and compare with the standard value through controller 9, adjust speaker 8 according to the result of comparing again.

Preferably, the controller 9 is a PID controller.

Preferably, the output terminal of the audio demultiplexing circuit 3 is an RCA interface, a BNC interface, an XLR interface, or a connection terminal.

Preferably, one side of the memory 7 is provided with a USB interface, and the USB interface is arranged to facilitate the audio stored in the memory 7 to be exported.

When the conference system is used, the conference system with multi-channel audio output comprises a conference microphone audio signal which is led into an audio demultiplexing circuit 3 through a microprocessor 2, then the audio signal is led into a plurality of audio output circuits 4 through the audio demultiplexing circuit 3, the plurality of audio output circuits 4 correspond to a plurality of microphones 5 one by one, the audio signal in the plurality of microphones 5 is stored in a memory 7, in the using process, the volume of the audio is identified through a volume identification module 10, the identified result is fed back to a controller 9, the information is identified through the controller 9 and compared with a standard value, then a loudspeaker 8 is adjusted according to the compared result, the inconvenience caused by the overhigh or undersize volume is avoided, the conference system adopts a full digital transmission mode, and the number of microphones which can be opened at most 128 at the same time is supported, the audio frequency of every microphone 5 can be exported alone, and 16 microphone signals can be exported to every host computer 1, can cascade 128 host computers 1 at most, supports same signal and can export on arbitrary host computer 1, and this system exports the sound of every microphone 5 alone, independently adjusts, effectively solves the difficult problem of adjusting of a plurality of microphones feedback suppression.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a conference system of multichannel audio output, includes host computer (1), microprocessor (2), audio frequency demultiplexing circuit (3), a plurality of audio output circuit (4) and a plurality of microphone (5), its characterized in that: the inside of host computer (1) is equipped with microprocessor (2) and audio demultiplexing circuit (3), the signal output part of microprocessor (2) is connected with audio demultiplexing circuit (3), the output of audio demultiplexing circuit (3) is connected with a plurality of audio output circuit (4), a plurality of the signal output part of audio output circuit (4) all is connected with microphone (5), the signal output part of a plurality of microphone (5) all with memory (7) electric connection, a plurality of the inside of microphone (5) all is provided with volume control device (6).

2. The multi-audio output conference system according to claim 1, wherein: a plurality of volume control device (6) all includes speaker (8), controller (9) and volume identification module (10), speaker (8) and volume identification module (10) all with controller (9) electric connection.

3. The multi-audio output conference system according to claim 2, wherein: the controller (9) is a PID controller.

4. The multi-audio output conference system according to claim 1, wherein: the output end of the audio frequency demultiplexing circuit (3) is an RCA interface, a BNC interface, an XLR interface or a connecting terminal.

5. The multi-audio output conference system according to claim 1, wherein: one side of the memory (7) is provided with a USB interface.