ABSYNTH 5 Reference Manual – 154
10.8 Audio Mod Page
Audio Mod page
With the function Audio Mod you can derive modulation signals from audio signals. This follows
the principle of an Envelope Follower Module: Each of the four Audio Signal Analysis Paths
available for parallel use, Audio Mod A to D, analyzes the level of the audio signal transmitted
to it and then makes the result of the analysis available when the Signal has its output as a
Modulation Signal. The progress or sequence of values corresponds to an envelope: A high
level of the Audio Signal means the same thing as a high value of the outgoing Modulation
Signal. Apart from using them to directly control parameters, you can also use the Audio
Mods as a Trigger to activate the envelope paths.
10.8.1 Audio Mod as Envelope Follower
The Enveloper Follower function is similar to a Macro Control. Rather than a MIDI source or
an Automation track, the level of a signal activates the value changes of an outgoing control
signal. This manner of working is best illustrated through an example: Turn on the Waveshaper
Module in Channel A in the Patch Window and select a square Waveform for the Waveshaping.
Right click in the In dB control of the Waveshaper Module and select the entry Audio Mod A
from the context menu. Increase the value in In dB control by about 12 dB. In the Perform
Window, switch to the Audio Mod page and select the entry Oscil A as Modulation Source
from the Modulation Source menu. In the Depth% control, set a medium Modulation Depth
and reverse the Modulation Signal by hitting the Inversion switch. If the input level is low, this
signal manipulation will boost (preamp) the signal in In dB control. Conversely, the boosting
will be reduced if the input level is high. In effect, a compression of the Signal results. This
pretreatment is the result of a consistent signal distortion by the level-sensitive Waveshapers
when dealing with various volume levels.
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