Envelopes Section
AMP and MOD Envelopes
The Envelopes are used to shape a sound throughout its duration. The
AMP Envelope determines the volume of the sound with respect to its
duration.
The MOD Envelope may be used to control other sound elements of the
synthesizer throughout the duration of the sound. It can control Oscillator
Pulse Width, Filter frequency and Oscillator Pitch.
ATTACK Slider
Sets how quickly the envelope rises to its maximum level when a note is
struck. Fully anticlockwise and this rise time or slope is very fast, less
than half a thousandth of a second (instantaneous to the ear) increasing
exponentially to twenty seconds when fully clockwise. To shorten attack
times, turn this control towards zero and to lengthen attack times, turn this
control towards maximum.
Note : When the attack time is set to Zero, the instantaneous rise time of
the Envelope may produce audible ‘clicks’. This is not a faulty condition
and may be useful for the creation of certain sounds (for example, ‘key
clicks’ on organ simulations). If this is undesirable, increase the Attack
time until the clicks are inaudible.
DECAY Slider
Sets how quickly the envelope falls to a sustain level after the maximum
level has been reached. Set to zero, this time is about one thousandth of
a second (still instantaneous to the ear ) increasing exponentially to twen-
ty seconds when set to maximum. To shorten decay times, move this con-
trol towards zero and to lengthen decay times move this control towards
maximum.
SUSTAIN Slider
Sets the level at which the envelope remains following the Decay phase,
only while a key is being held on a controller keyboard (or there is a MIDI
Note On command present). When set to zero, the envelope will decay to
zero without being interrupted. As the control is moved towards maximum,
the sustain level increases until, when at maximum, the sustain level is at
its maximum level.
RELEASE Slider
Sets how quickly the envelope falls from the sustain level to zero once the
note has been released. When set to zero, this time is about one thou-
sandth of a second (instantaneous to the ear) increasing exponentially to
twenty seconds when set to maximum. To shorten release times, move
this control towards zero and to lengthen release times, move this control
towards maximum.
Additional settings associated with the Envelopes can be found within the
Envelopes Menu. See Page 39.
Volume, Headphones and Input Sockets
VOLUME Knob
This control adjusts the
overall output volume
on both the Left and Right
master audio outputs found on the rear panel. It also controls the
Headphone output, also on the rear panel. Using a mixing desk as a com-
parison, this control can be thought of as the channel volume fader.
PHONES Jack
Connect headphones to this jack when you wish to enjoy your KS Rack in
privacy !
AUDIO INPUT Jack
Use this jack to process external sound sources through the KS Rack’s
Filter or Effects.
MAIN FEATURES AND OPERATION
Envelopes Section - Volume, Headphones and Input Sockets
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Envelopes
Amp
Mod
release
sustain
decay
attack
release
sustain
decay
attack
volume
phones
audio input
