ENVELOPE GENERATORS
Both envelope generators are identical and provide control voltages that can be used to dynamic change
of all voltage controlled parameters, such as; frequency, amplitude, pulse width, cutoff.
The most common use is controlling a filters cutoff frequency and a voltage controlled amplifiers amplitude in
order to achieve dynamic timbre- and level-changes. The envelopes of the S1are internally pre.patched to
different modules, such as; Master Controller, MIXER, LPF and MMF and Master Amplifier.
All parameters
such as Attack time, Decay time, Sustain level, Release time, Delay time, and Output level are voltage
controlled. These parameters can be modulated with various waveforms or governed from a voltage source.
For example, when controlled from CV1, the higher one plays on the MIDI keyboard the more Decay time
decreases. In other words, the lower the tones are the longer the Decay times are, and the higher the tones
are the shorter the Decay times are.
46
Envelope Generator, Attack, Decay &Release=0, Sustain=4
Time (milliseconds)
0
1
2
3
4
5
6
7
8
9
10
ADSR AMPLITUDE
0
2
4
6
8
Envelope Generator, variable release time
Time (milliseconds)
0
1
2
3
4
5
6
7
8
9
10
ADSR AMPLITUDE
0
2
4
6
8
Envelope Generator, variable decay time
Time (milliseconds)
0
1
2
3
4
5
6
7
8
9
10
ADSR AMPLITUDE
0
2
4
6
8
Envelope Generator, variable attack time
Time (milliseconds)
0
1
2
3
4
5
6
7
8
9
10
ADSR AMPLITUDE
0
2
4
6
8
SUSTAIN, CV modulated by a an external signal
Time (milliseconds)
0
1
2
3
4
5
6
7
8
9
10
ADSR AMPLITUDE
0
2
4
6
8
DECAY, CV modulated by envelope generators output
Time (milliseconds)
0
1
2
3
4
5
6
7
8
9
10
ADSR AMPLITUDE
0
2
4
6
8
ATTACK, CV modulated by envelope generators output
Time (milliseconds)
0
1
2
3
4
5
6
7
8
9
10
ADSR AMPLITUDE
0
2
4
6
8
The diagrams below show modulated ATTACK TIME, DECAY TIME and
SUSTAIN LEVEL by external CV sources.
