| 摘要 |
Even in a conference audio system having an automatic mute release device, i t is possible to reduce a delay time from an utterance to output from a speake r. The system includes: an A/D converter (33) for converting an audio signal fr om a plurality of microphones into a digital signal; audio level detection mean s to detect whether the converted digital signal level indicates an utterance or no sound; audio data storage means (32) for temporarily storing the digital signal in which the audio level detection means has detected an utterance; control means (31) for controlling storage of the audio data into the audio data storage means (32) and read out of the audio data; and a D/A converter (34) for converting the read-out audio data into an analog audio signal. Whe n the audio level detection means has detected no sound in the series of audio data, the control means (31) hastens the audio data read-out timing in correspondence to the time of the no sound portion.
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