Transient Designer
6
Two envelopes are generated
and compared – the VCA control
voltage is derived from their
difference
Diagram 1
illustrates the original curve and
both generated envelopes for
processing the attack period.
The envelope follower Env 1
corresponds to the shape of the
original curve.The attack of
Env 2 is lower
Diagram 2
illustrates the difference from
Env 1 and Env 2, giving the
VCA control voltage
In nearly every aspect the Transient Designer is different from
conventional Dynamic Processors or Compressors. You don't
need to know how the Transient Designer works in order to be
able to use it effectively, but if you're at all curious as to what goes
on inside the box, read this section while referring to the
diagrams.
Differential Envelope Technology®
Differential Envelope Technology® maintains identical enve-
lope processing from quiet to loud signals (from pianissimo to
fortissimo) without the need for the user to adjust any external
parameters. In a conventional system, low level signals would be
excluded from processing. Both parameters (ATTACK and
SUSTAIN) work in parallel and do not influence each other.
The ATTACK control circuitry
The ATTACK control circuitry uses two envelope generators. The
first follows the shape of the original curve (Diagram1: envelope
follower Env 1), while the second generator produces the enve-
lope Env 2 (Diagram 1) with a slower attack.
The hatched area shows the difference between Env 1 and Env 2
(Diagram 2), and the VCA control voltage is derived from this
difference. Positive ATTACK values emphasise attack events, nega-
tive ATTACK values smooth out the attack envelopes of events.
Tech Talk
