ENSONIQ SQ-R

Section 6 - Standard Sound Programming
SQ-R Musician's Manual '
ENV 1, ENV 2, (AMP) — SQ-R Envelopes
An Envelope is a shape, or contour, which we apply to a signal source to make it
change over time. Each SQ-R voice has three envelopes. These envelopes are
automatically routed to the pitch, filter frequency and amplitude of the voice,
though ENV 1 and ENV 2 can also be assigned elsewhere, wherever a modulator
is selectable.
• ENV 1 is routed to the pitch of the voice. There is a parameter always available
on the Pitch Mod Screen which lets you adjust the amount by which ENV 1 will
modulate the voice's pitch.
• ENV 2 is routed to the filter cutoff frequency of the voice. For each of the
voice's two filters, the parameter labeled ENV 2= in the Filters bank controls
ENV 2 depth.
• AMP is routed to the amplitude (volume) of the voice. The AMP envelope
always controls the final volume contour of the voice. Any other volume
modulators selected in the Output bank will occur before AMP in the signal
flow.
The SQ-R envelopes are descended from the venerable ADSR (attack, decay,
sustain, release) envelope, but with many refinements. While the ADSR
envelope gives you control over three time segments and one level, the SQ-R
envelopes give you control over/owr levels and/<?wr time segments.
The illustration below shows the make-up of a SQ-R envelope:
KEY
COWN
TIME
KEY
UP
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Envelopes