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TimewARP 2600 Getting Started Guide
11
VCF Inputs
The VCF has five audio signal inputs. These are fed through linear faders as a summed signal to the
VCF itself ❶.
The default input signals sources are:
< Ring Modulator
< VCO-1 Square
< VCO-2 Pulse
< VCO-3 Sawtooth
< Noise Generator
The VCF has three Frequency Control inputs
❷. The first is normally from the keyboard pitch control.
The second and third FM Control inputs are governed by linear faders—prewired to these are the ADSR
Envelope Generator output and the VCO-2 Sine output.
ADSR Envelope Generators
The ADSR Envelope Generator ❶ offers variable Attack time, initial Decay time, Sustain level, and final Release time.
Four vertical sliders control these parameters. Note that three of these are time parameters while the fourth– Sustain
level–is not.
Envelope generation is initiated by a “gate signal” which can be a square or pulse wave input, a note from the
keyboard, or a press of the Manual Start button. As soon as a gate signal ceases, the envelope begins its “release”
phase.
The Manual Start button
❷ overrides any wave sources. The two-position switch ❸ just under the lower AR generator
selects between the square or pulse wave sources called “gate” and “trig.”
The AR Envelope Generator
❹ offers variable Attack time and final Release time. Two vertical sliders control these
parameters. The AR doesn’t require any trigger signal to operate.