User Manual

Unified Communications Microphone & Speaker System
YVC-1000 White Paper
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stabilized.
Since human voices cannot be distinguished if there is no HVAD, the auto gain control might respond to abrupt or
steady noises. For example, if this function responds to intermittent low sounds (e.g. from keyboard typing) while
nobody is saying anything, then the sound level will be underestimated (recognized as a low voice), thereby
significantly increasing the microphone gain. As the result, there is a possibility of sending objectionable sounds
(intermittent noise) other than voices to the other communicating parties. YVC-1000's automatic gain control
minimizes such a risk thanks to the presence of HVAD.
2. Automatic Audio Tuning Function
2.1 Overview and purpose
This function learns the acoustic environment inside the room, and automatically optimizes the parameter settings
of the signal processing technologies, etc. (adaptive echo canceller/automatic room EQ).
● Conferences can be started in conditions with optimal settings
In general, the learning by the echo canceller and the noise reduction, etc. would progress after a certain extent of
time had passed whereas conversation with the distant party had taken place, then the advanced signal processing
capability could be demonstrated. However if this function is used, then conferences can be conducted in
conditions with optimal settings immediately after they are begun. When the automatic audio tuning function is