User Manual

ARTURIA – CS-80 V – USER MANUAL 38
By clicking on these labels, it is possible to activate or deactivate a filter in order to
save on calculation power.
The 24dB button allows us go from a 12 dB filter to a 24 dB filter. The two low-pass
and high-pass filters are simultaneously modified.
The filters are modulated by an envelope where the Initial Level (IL), Attack Level
(AL), Attack (A), Decay (D) and Release (R) settings function in the following
manner:
 IL represents the start of the envelope relative to the frequency of the filter.
The filter frequency will be modulated starting with a frequency inferior to the
frequency setting. The more IL is increased, the lower the starting frequency
will be;
 AL represents the maximum level attained by the envelope;
 A is the attack time, meaning the time that the envelope takes to go from the
IL level to the AL level;
 D is the decay time, meaning the time that the envelope takes to go from the
AL level to zero level (no modulation);
 R is the release time, meaning the time that the envelope takes to go from
the zero level (no modulation) to the IL level.
Setting the filter envelope
The output of the filters is controlled by a volume VCF LEVEL before being added to
a sine wave (>~<). The signal can thus be treated by the output amplifier (VCA)
controlled by an envelope. The LEVEL control sets the volume at the end of line of
the synthesis.
The envelope controlling the VCA is a standard ADSR envelope:
 A attack time: the time for the volume to go from silent to full volume;
 D, decay time: the time to go from the end of A to S;
 S, sustain level: reached after the decay period;
 R, release time: to come back to 0 once the note has been released.