Sound system for conference

Abstract

A kind of sound system for meeting, it is characterized in that, has: A / D converter (33), the sound signal from a plurality of microphones is converted into digital signal; Sound level detection device, according to the digital signal level after conversion To detect whether it is speech or silence; sound data storage device (32), temporarily stores the digital signal that sound level detection device detects speech; control device (31), to the storage of sound data to sound data storage device (32) and the reading of sound data is controlled; and a D / A converter (34) converts the read sound data into an analog sound signal. The control means (31) advances the reading timing of the audio data corresponding to the time of the silent part when the audio level detection means detects silence in a series of audio data. Even in a conference sound system equipped with an automatic unmute device, the delay time from sound emission to sound emission from a speaker can be shortened.

Description

technical field [0001] The present invention relates to a conference audio system, and more particularly, to a conference audio system capable of preventing the beginning of a delayed sound from being cut off, for example, in a wireless conference audio system using infrared rays. Background technique [0002] In the case of multiple people attending a meeting, use the conference sound system as follows: After acquiring the speaker's voice with a microphone and amplifying it with an amplifier, the sound is transmitted through the speakers in the venue so that the voice of one speaker be communicated to all those present. Use multiple microphones in meetings with sound systems. When multiple microphones are turned on at the same time (in a so-called active state), the sound captured by the above microphones is amplified and emitted from the speaker, so that sounds other than the speaker's voice become noise and are difficult to hear. In addition, howling is easily generated...

AI Technical Summary

Problems solved by technology

However, when the invention described in Patent Document 3 is applied to a conference sound system, if the sound signal is interrupted and it is judged that there is no sound signal, the sound data stored in the buffer will be discarded, so it is next judged that there is a sound signal At this time, the audio signal is sequentially stored in the buffer and read out sequentially, so the delay elimination effect of the audio cannot be expected

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