Audio Meters; Testing Stereosurround - Polycom QDX 6000 System Administrator's Manual

Administrator Guide for Polycom QDX 6000 System

Audio Meters

Testing StereoSurround

4 - 6
To configure stereo settings:
1. Go to System > Admin Settings >Audio > Stereo Settings.
2. Configure these settings on the Stereo Settings screen:
Setting
Enable Polycom
StereoSurround
The audio meters in the user interface allow you to identify left and right
channels. The meters also indicate peak signal levels. Set signal levels so that
you see peaks between +3 dB and +7 dB with normal speech and program
material. Occasional peaks of +12 dB to +16 dB with loud transient noises are
acceptable. If you see +20 on the audio meter, the audio signal is 0 dBFS and
the audio might be distorted.
After you configure the system to use Polycom StereoSurround, test the
system configuration and place a test call.
To test your stereo configuration:
1. Go to System > Admin Settings > Audio > Stereo Settings.
Make sure the microphones are positioned correctly.
2. Go to System > Admin Settings > Audio > Stereo Settings.
Gently blow on the left leg and right leg of each Polycom microphone
while watching the Left and Right meters to identify the left and right
inputs.
3. Go to System > Admin Settings > Audio > Stereo Settings >
Test the speakers to check volume and verify that audio cables are
connected. If the system is in a call, the far site hears the tone.
Exchange the right and left speakers if they are reversed.
Adjust the volume control on your external audio amplifier so that the test
tone sounds as loud as a person speaking in the room. If you are using a
Sound Pressure Level (SPL) meter, it should measure about 80-90 dBA in
the middle of the room.
Description
Specifies that Polycom StereoSurround is used for all
calls.
To send or receive stereo audio, make sure your Polycom
QDX 6000 system is set up as described in
Devices to the Polycom QDX 6000 Microphone Input
page 4-1 and Connecting Audio Output
Connecting
on
on page 4-2.
.