2
E-MU Systems
RFX-32
Mixer Section
Mixer Section
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O
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Mixer Applications:
• Convert the Emulator’s 2
stereo analog inputs to 4 mono
inputs by using mixers to block
the left or right channel from a
bus.
• Mix stereo signals to mono
• Process control inputs for the
vocoder and envelope-sensitive
plug-ins.
• Pan between different stereo
delay or EQ settings.
The Mixer Section Plug-in is a 2x2 stereo mixer representing 2 channels of a
mixing console. The left and right inputs of the mixer have separate signal
paths consisting of a switchable phase (polarity) invert, High Frequency
Shelving EQ, Parametric EQ stage, Low Frequency Shelving EQ, and a
Volume control adjustable from +12dB to –100dB of gain. The two signals
are then input to a 2x2 panning matrix. All parameters are smoothed.
The Mixer can be operated in either “split” or “locked” modes:
•
Split mode
- There are individual parameter controls for the left and
right signal paths.
•
Locked modes
- There is one set of parameter controls that set common
values for the parameters of the left and right channels together while
leaving their signal paths independent.
The block diagram of the Mixer Section is shown below.
There are actually two Locked modes, which differ in the behavior of the
single stereo Pan parameter:
•
Locked(Pan) mode
- Locked (Pan) mode - When turned leftward, the
Pan control pans the right input signal over towards the left output
channel, and when turned rightward pans the left input signal towards
the right output channel. When panned Center, no panning of either
signal occurs. Thus it behaves like the split L Pan control when turned
to the right and the R Pan control when turned to the left.
•
Locked(Bal) mode
- The Pan control changes its name to Balance, and
works like a stereo L/R balance control to vary the proportion of left to
right input signals without re-routing any input signal to the opposite
output. When panned fully Left, no right channel is heard, and when
panned Right, no left channel is heard. Like Locked (Pan) mode, the
parameter has no effect on the output when panned Center.
L
Out
R
L
R
Phase
Invert
Hi Shelf
EQ
Parametric
EQ
Lo Shelf
EQ
Volume
In
-1
-1
-100/+12 dB
Pan
Matrix
L/R Pan
Hi
Freq
Gain
Gain
Width
Center
Freq
Volume
Lo
Freq
Gain
Balance
or
Pan
Left/Right
Pan or Balance
Mixer Section Block Diagram
