User`s manual

37
4.2.2: Digital Input Channel Swapping
Application:
Particularly on occasions where a digital audio tape recorder (DAT) is used to record
“Primary” (e.g., microphone) audio and “Reference” (e.g., TV) audio simultaneously
onto the same tape, it is possible that the channels may be swapped; e.g., the Primary
audio may be recorded onto the Right audio channel and the Reference audio recorded
on the Left audio channel. If this has occurred, then when inputting the audio digitally to
the PCAP II Plus, the Ref Canceller filter would normally not be able to provide
cancellation of the Reference audio, as it would be on the wrong channel.
Traditionally, it has been necessary to first convert such recorded signals to analog and
then swap the cables going into the analog inputs; now, however, the new Channel Swap
feature allows the channels to be swapped digitally without having to convert to analog,
thereby improving the results of the Ref Canceller processing.
The Channel Swap feature is accessed via the Settings menu as shown in Figure 4-5. When
checked, “Swap Digital Input Channels” causes the Left and Right audio channels of the
DIGITAL input to be transposed (Left -> Right, Right -> Left).
NOTE: this ONLY affects the DIGITAL input, not the ANALOG INPUTS.
Figure 4-5: Channel Swap Feature Selection
When the Channel Swap feature is activated, the Input Levels section of the Master Control
screen will appear as shown in Figure 4-6.