ClearOne Collaborate Room Pro with Beamforming Microphone Array - Manual (Page 12)

COLLABORATE ROOM PRO AND
THE BEAMFORMING MICROPHONE ARRAY
10
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Using the COLLABORATE Room Pro and Beamforming Microphone
Array with the HDMI output to monitor speakers requires adjustment for
audio levels and echo cancellation.
Volume
After attaching the HDMI output to the monitor, set the COLLABORATE
Room Pro Volume to 50%, then play the sample audio by pressing the
Play button. Use the monitor audio adjustment to set the volume within
the room to a comfortable level. Afterward, the COLLABORATE Room
Pro audio control can be used to increase/decrease the audio to a
desired level during sessions.
Delay
The HDMI connection must have a signal delay setting to allow the echo
cancellation to operate effectively. Initially, set the Audio Delay in the
COLLABORATE Room Pro Settings>Audio>Digital Dispay Audio
Delay control to 50 msec. (Range is 0 to 120 msec.) Then, while making
a call, adjust delay up or down in 10 msec increments until the audio
echo is no longer heard.