Polycom 3725-22724-003/A manual Audio

Selecting Audio and Video Devices for Use with Polycom PVX

Audio

Symptom	Problem	Solution
Unable to access audio adjustment	These adjustments are not available	Make audio adjustments when the
settings, such as the Microphone	when the system is in a call.	system is not in a call and not
Volume slidebar on the Setup >		muted.
Audio page.
The audio from a system using the	The microphone’s audio gain is set	Enable the Automatic Gain Control
computer’s built-in microphone and	too high.	setting on the Setup > Audio page.
a webcam is loud and distorted.		If this does not work, clear the
		Automatic Gain Control check box.
		Then click the Calibrate
		Microphone button and manually
		adjust the gain control using the
		Microphone Volume slidebar.
Far-site participants hear an echo.	The volume is too loud.	Reduce the volume.
	The microphone and speakers are	Separate the microphone and
	too close together.	speakers as far as possible.
	The microphone’s audio gain is set	Go to Setup > Audio and enable
	too high.	Automatic Gain Control.
	If you use a laptop’s integrated	Connect external speakers and use
	speakers with the laptop’s	them instead of the integrated
	integrated microphone or with a	speakers.
	webcam’s microphone, the
	structure of the laptop computer and
	the quality of the laptop speakers
	may cause problems that the
	Windows XP echo canceller cannot
	correct.
In a multipoint call, the audio from a	The microphone’s audio gain is set	Go to Setup > Audio and enable
Polycom PVX with a webcam	too high.	Automatic Gain Control.
sounds either too loud or too soft		Adjust the microphone manually. To
compared to the other sites in the
		do this:
call.
		1. Clear the Automatic Gain
		Control check box.
		2. Click Calibrate Microphone.
		3. Use the Microphone Volume
		slidebar to adjust the
		microphone.

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