Phase And Attenuation - Yamaha 02R Owner's Manual

32 MIXING Display Functions
1. Press the [ /ATT] button.
Ø/ATT
The /ATT display
function appears.
2. Select a channel using
the [SEL] buttons or the
CURSOR buttons.
3. To change the phase,
press the [ENTER] button.
The NOR icon changes
to REV and is highlighted
in reverse video when
the phase is inverted.
4. To change the
attenuation, rotate the
encoder wheel until the
desired value is shown.
Note: Double-click the
[ENTER] button to set all the
channels phase and
attenuation to the same level
as the selected channel. The
STEREO channel is not
affected.
5. Select another channel
by pressing the [SEL]
buttons of the CURSOR
buttons.
Digital Recording Console 02R User's Guide

Phase and Attenuation

Phase
The Phase ( ) function inverts the phase of the selected signal. When the
phase of an channel is inverted against a corresponding channel, it can
cause attenuation of both channels due to phase-cancellation. This can be
caused by incorrectly wired cables or connectors. It can also be caused
improper microphone placement, especially when attempting to record in
stereo.
The Phase ( ) function can compensate for these problems. It is also useful,
for example, when a snare drum is miked top and bottom. In this case the
bottom microphone signal should be phase inverted. The phase can be set
to normal or reverse (inverted) for the input channels and the tape and
effect returns.
The stereo input channels are always ganged together. The MIC/LINE and
TAPE channels are always set independently even when they have been
linked together in GANG mode with the PAN function.
Note: You cannot invert the phase of the STEREO output channel.
Attenuation
The Attenuation function is used to cut the level of the selected signal by as
much as 96 dB. This attenuation is applied after the signal has been
converted to digital (or format converted in the case of a digital input).
Note: The STEREO output channel attenuation is in the range of +12 dB to
–96 dB. The attenuation for all other channels is 0 dB to –96 dB.
The attenuation function is repeated in the EQUALIZER display functions,
where it can be used to compensate for the gain increases caused by
boosting different frequencies.
You can also set the phase and attenuation with the VIEW display function.