Extron electronics MediaPort 200 User Manual page 22

Mix to Far End
The following controls facilitate a mix of mic and program audio that is sent to the far end via
USB to the computer (see figure 9 below).
Mic Volume — This master volume control is shown in purple and the mix-points it
•
controls are also shown in purple. The mono mic signal is routed to both the left and
right paths of the USB output.
• Program Volume — This master volume control is shown in green and the mix-points
it controls are also shown in green.
PROGRAM MIX
USB
HDMI LINE IN
PLAYBACK
MUTE MUTE MUTE
Figure 9. Mix Controls
Typically, mic audio level is set higher than program audio. It is recommended that the Mic
level control be set to 0 dB, or unity gain, which is the optimal level sent to the USB Out and
received by the computer. Program volume is then set relative to the mic volume, providing
a good listening level such that the far end does not need to make an adjustment to their
volume control to compensate for discrepancies between mic and program volume levels.
NOTE: The ducker can be used so that when the microphone (a talker) and program
material are active simultaneously, speech takes precedence over program so that
speech can remain intelligible (see
FROM FAR END NEAR END
USB COMMUNICATIONS ROOM VOLUME
MUTE
MUTE
Mix USB Communication
Ducking
on page 55 for more information).
MediaPort 200 • Theory of Operation
MIX TO FAR END
MIC PROGRAM
STEREO
DUAL MONO
MUTE MUTE
Mix USB Playback
STEREO
DUAL MONO
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