CN209982730U

CN209982730U - Sound amplification system for conference

Info

Publication number: CN209982730U
Application number: CN201921321435.0U
Authority: CN
Inventors: 王世友
Original assignee: Shenyang Rende Technology Co Ltd
Current assignee: Shenyang Rende Technology Co Ltd
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2020-01-21
Anticipated expiration: 2029-08-15

Abstract

A public address system for a conference belongs to the technical field of conference system management. The utility model provides a public address system is used in meeting, include central control system, acquisition element and digital audio processor with public address system, state central control system's output and connect digital audio processor's input, digital audio processor's output is connected stereo matrix switch's input and audio video matrix switch's input respectively, stereo matrix switch's output and audio video matrix switch's output all connect public address unit's input, fall and make an uproar and echo cancellation unit's input and the input of benefit sound. The utility model discloses an installation public address unit, fall make an uproar and echo cancellation unit and benefit sound information is come to the transmission and is carried out the public address, fall the public address of the sound of making an uproar and supplementary. The loudspeaker in the audio and video system can transmit audio to each corner of a public area more clearly, user experience is improved, and using effect is enhanced.

Description

Sound amplification system for conference

Technical Field

The utility model relates to a conference system manages technical field, in particular to public address system is used in meeting.

Background

With the rapid development of social economy, an audio and video system intelligently managed in public places such as hotels plays an increasingly important role, the volume quality and the definition of the audio and video system in each occasion are particularly important, at present, the audio and video system in a public area cannot meet the requirement that all guests in the area can clearly hear in the market, the audio and video system needs to be amplified, a common loudspeaker only carries out simple amplification processing by installing a loudspeaker, noise interference can occur in the amplification process, and the simple loudspeaker cannot ensure the amplification definition.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems of the prior art, the utility model provides a public address system for conference, the public address system comprises a central control system, an acquisition unit and a digital audio processor, the input end of the acquisition unit connected with the central control system is connected with the output end of the central control system, the input end of the digital audio processor is connected with the output end of the digital audio processor, the output end of the digital audio processor is respectively connected with the input end of a stereo matrix switcher and the input end of a audio video matrix switcher, the output end of the stereo matrix switcher and the output end of the audio video matrix switcher are respectively connected with the input end of the public address unit, the input end of a noise reduction and echo cancellation unit and the input end of a sound compensation sound, the output end of the public address unit, the output end of the noise reduction and echo cancellation unit and the output end of, the output end of the loudspeaker is connected with the audio receiving equipment.

As a further improvement of the present invention, the audio receiving apparatus includes a video camera, a projector, and a DVD.

As a further improvement of the present invention, the stereo matrix switcher and the audio-video matrix switcher employ an AV matrix switcher and a VGA matrix switcher.

As a further improvement of the utility model, the public address unit is power amplifier and operational amplifier for public address.

Has the advantages that: the utility model discloses an installation public address unit, fall make an uproar and echo cancellation unit and benefit sound information is come to the transmission and is carried out the public address, fall the public address of the sound of making an uproar and supplementary. The loudspeaker in the audio and video system can transmit audio to each corner of a public area more clearly, user experience is improved, and using effect is enhanced.

Drawings

Fig. 1 is a system block diagram of a public address system for a conference provided by the present invention;

fig. 2 is a block diagram of an audio receiving device in a public address system for conference according to the present invention.

1. The system comprises a central control system 2, an acquisition unit 3, a digital audio processor 4, a stereo matrix switcher 5, an audio and video matrix switcher 6, a sound amplification unit 7, a noise reduction and echo cancellation unit 8, a sound compensation sound 9, a loudspeaker 10, an audio receiving device 11, a camera 12, a projector 13 and a DVD.

Detailed Description

The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that the functions, methods, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.

As shown in fig. 1, in order to solve the problems of the prior art, the present invention provides a public address system for conference, the public address system comprises a central control system 1, a collecting unit 2 and a digital audio processor 3, the collecting unit 2 is connected to the input of the central control system 1, the output of the central control system 1 is connected to the input of the digital audio processor 3, the digital audio processor 3 is used for processing the information transmitted by the central control system 1, the output of the digital audio processor 3 is respectively connected to the input of a stereo matrix switcher 4 and the input of a audio matrix switcher 5, the output of the stereo matrix switcher 4 and the output of the audio matrix switcher 5 are connected to the input of a public address unit 6, the input of a noise reduction and echo cancellation unit 7 and the input of a sound compensation sound 8, the complementary sound 8 is used in conjunction with the amplification unit 6 to further amplify the sound of the loudspeaker 9, the output of the amplification unit 6, the output of the noise reduction and echo cancellation unit 7 and the output of the complementary sound 8 are connected to the input of the loudspeaker 9, and the output of the loudspeaker 9 is connected to the audio receiving device 10.

As shown in fig. 2, the audio receiving apparatus 10 preferably includes a video camera 11, a projector 12, and a DVD 13.

Preferably, the stereo matrix switcher 4 and the audio video matrix switcher 5 employ an AV matrix switcher and a VGA matrix switcher.

Preferably, the sound amplifying unit 6 is a power amplifier and an operational amplifier for amplifying sound information of the speaker 9.

The working principle is as follows: the utility model discloses at the during operation, the information transfer that acquisition unit 2 will gather is for central control system 1, central control system 1 passes through digital audio processor 3 with information transfer for audio and video matrix switch 4 and stereo matrix switch 5, the information that is used for switching and distributes the transmission, pass through public address unit 6 with the sound information of transmission, fall make an uproar and echo cancellation unit 7 and the processing of benefit sound 8 transmit for speaker 9, speaker 9 is played the information of handling.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A public address system for a conference, characterized in that: the public address system comprises a central control system (1), an acquisition unit (2) and a digital audio processor (3), wherein the acquisition unit (2) is connected with the input end of the central control system (1), the output end of the central control system (1) is connected with the input end of the digital audio processor (3), the output end of the digital audio processor (3) is respectively connected with the input end of a stereo matrix switcher (4) and the input end of a audio matrix switcher (5), the output ends of the stereo matrix switcher (4) and the audio matrix switcher (5) are respectively connected with the input end of a public address unit (6), the input end of a noise reduction and echo elimination unit (7) and the input end of a sound supplement sound (8), the output end of the public address unit (6), the output end of the noise reduction and echo elimination unit (7) and the output end of the sound supplement sound (8) are respectively connected with the input end of a loudspeaker (9), the output end of the loudspeaker (9) is connected with an audio receiving device (10).

2. The audio amplification system for conference as set forth in claim 1, wherein the audio receiving device (10) comprises a video camera (11), a projector (12) and a DVD (13).

3. The audio amplification system for conference as set forth in claim 1, wherein the stereo matrix switcher (4) and the audio-video matrix switcher (5) employ an AV matrix switcher and a VGA matrix switcher.

4. The conference amplifying system according to claim 1, wherein the amplifying unit (6) is a power amplifier and an operational amplifier for amplifying.