DSP Functions
Mixers
14-34
SOURCE 2 Control Source list
SOURCE 2 DEPTH CONTROL Control Source list
MINIMUM DEPTH, SOURCE 2 ± 200%
MAXIMUM DEPTH, SOURCE 2 ± 200%
The AMP stage sets the overall amplitude applied to both wires, and is programmed exactly
like the AMP function described above. Their control input pages are almost identical,
including the ranges of values. The only difference is that there’s no Pad parameter for the AMP
stage of the BAL AMP function. The F4 soft button selects the control input page for the AMP
stage.
GAIN
This function, like AMP, can boost or cut the amplitude of the signal as it passes through the
algorithm. Unlike AMP, however, the layer’s amplitude envelope doesn’t effect the gain
settings. GAIN can be used to introduce clipping into a signal, or for adjusting the amplitude of
an added waveform. Use a gain function when you want to boost or cut all of a sound’s partials
uniformly. The control input page for GAIN is identical to the one for AMP.
Mixers
+AMP
+GAIN
CROSSFADE
The functions in the Mixer category combine two-wire signals in various ways. They have
double wires at their inputs, and they mix and amplify the signals from the two wires, then
combine them for output to a single wire. Depending on where you assign one of these
functions, they can be used to combine two-wire signals for the F4 AMP block, or to enable you
to apply another DSP function to the combined signals before the F4 AMP block.
There’s a Pad parameter on the control input pages for these functions, which attenuates the
lower wire’s signal at its input to the function.
+AMP
The two input signals to this function are multiplied by .5 (to reduce the likelihood of clipping),
then added together. The resulting signal is then multiplied by a gain factor (the combined
values for the parameters on the control input page), and multiplied by 2. Any clipping that
occurs can be eliminated by lowering the value of the Adjust parameter. If the Adjust value is –
6 dB or lower, the signal will never clip. The control parameters are affected by the settings and
controls on the AMPENV page.
+GAIN
This function operates in almost the same way as +AMP, the only difference being that the
signal is not affected by the settings on the AMPENV page, since it occurs before the final AMP
block.
Crossfade (XFADE)
This function adds the signals from the upper and lower wires after evaluating the combined
values of the parameters on its control input page. If those values add up to -100%, only the
lower wire’s signal is sent to the output. If they add up to 100%, only the upper wire’s signal is
sent to the output. If they add up to 0%, both signals are attenuated 6 dB, then added and sent
to the output.
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