MediaPort 200 with Exter
nal DSP with AEC
6.
If using a DSP for microphones and AEC, uncheck the
Mix USB Communications
checkbox so that the USB communications audio is only routed to the AEC Ref output
to be used as an AEC reference signal in the external DSP (see figure 91
6
below).
Figure 91.
Mix USB Communications Checkbox
This mutes the USB communications (far end) audio to the line output while continuing
to route this audio to the Ref output.
NOTE:
Muting the USB communications audio isolates it from the program audio,
so that they can be handled independently on the DSP.
Setting the Mix to the Far End
The
Mic
6
on the previous page) and
Program
master fader
in the
Mix
to
Far
End
panel create the mix of program and microphone audio that is sent
to the far end via the USB output. For best results, adjusting these masters during an
active conference to achieve a proper blend of mic and program material, providing clear,
undistorted audio to the far end.
These settings can be adjusted during a soft codec conference if needed (for example, if
the participants at the far end notice that one audio type is louder than the other). Set this
mix level while the talkers at the near end and far end are speaking at a normal levels for
conferencing, and when program material is being played at the far end.
figure 91.
AEC Ref Only Radio Button on the From Far
End Panel
MediaPort 200 • with External DSP with AEC Application Setup
111
