Audio Line Outputs; Analog Line Output; Usb Line Output; Ref And Aux Outputs - Extron electronics MediaPort 200 User Manual

Audio Line Outputs

Analog Line Output

For an application that uses an external DSP with AEC in conjunction with the
MediaPort 200, connect the Analog Line Output to the DSP to be sent to local sound
reinforcement and also be used as an AEC reference. The default setting for this output is
stereo, but can be configured to dual mono if desired.
NOTE: Mic/Line Input signal is not sent to the Analog Line Output of the MediaPort 200.
When using an external DSP with AEC, mute the USB communications audio (far end) to
the Analog Line Outputs and send it to the DSP via the REF output (see
Listening Levels Using the PCS Software
The MediaPort always routes USB communications audio from the far end to the REF
Out. This port is intended for use with an external DSP with AEC, so that far end USB
communications audio can serve as an AEC reference on the DSP, and then be sent from
the processor to the local sound reinforcement system.
When USB communications audio to the line output is muted, the line output sends only
program audio to the DSP. This allows program audio to be managed separately from USB
communications audio. Program audio can be used as an AEC reference, and either mixed
to the same sound system as USB communications audio or sent to a separate sound
system.

USB Line Output

The USB Line Output carries all program and speech audio from the near end through the
USB port to the PC to be sent to the far end.

Ref and Aux Outputs

The following outputs are on a shared connector on the MediaPort 200 rear panel:
•
•
The REF Output sends the far end communications audio to the external DSP to be
used as an AEC reference and also to be sent to the local sound reinforcement system.
The Aux Output contains only the Mic/Line Input signal from the MediaPort 200. This
output allows the Mic/Line Input signal to be sent to a "voicelift" system if local speech
reinforcement is needed. Alternatively, the Aux Output can send the Mic/Line Input
signal to a hardware video codec if one is in use (see
MediaPort 200 with External DSP with AEC Application Setup
Setting Mix and
on page 108).
Application 2 on on page 102).
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