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Envelopes
COBALT8X provides 3 separate 4-stage Envelope Generators (i.e. envelopes), one for the filter
(FILT-EG), one for the amplifier (AMP-EG) and one for modulations (MOD-EG). With negative
amounts (FILT-EG and MOD-EG) only the attack, decay and sustain levels are inverted, the
release phase will still tend to 0.
The envelope generator represented on the encoders can be selected using the 3 dedicated
buttons to the right of the envelope depth encoder.
• Attack: This parameter controls the time passing from the moment you press a key (i.e.
‘MIDI Note On’ message) until the sound reaches its maximum value.
• Decay: This parameter controls the time passing for the envelope to drop from its
maximum value to a sustain level (see below).
• Sustain: This parameter controls the level of the sustain phase (i.e. the volume of the
sound while keeping the key pressed for AMP-EG). If there are no modulations active, this
volume keeps constant until you release the key. (The envelope then enters the ‘release’
phase)
• Release: This parameter controls the time passing from the moment you leave a key (i.e.
‘MIDI Note Off’ message) until the sound reaches silence.
• Depth: This controls the envelope depth amount of the selected envelope generator.
This gives bi-polar (FILT-EG and MOD-EG) or uni-polar (AMP-EG) control of the amount of
modulation the envelope has over its destination/s.
• Type: There are 8 envelope types. These types are stored per-patch and each envelope
type is independent so you can have a different type for MEG, FEG and AEG in the same
patch. You can find these settings at the bottom of the AEG, FEG and MEG pages on the
screen.
- Expo - classic exponential curve - suited for most sound types
- Snappy - fast attack and decay time curves - best suited for percussive material
- Soft - smoother attack and release time curves - best suited for pads
- Linear - simple linear ramp for each envelope stage - best suited for modulation
- Expo Long – Expo curve with double the maximum time for each stage of the envelope
- Snappy Long – Snappy curve with double the maximum time for each stage of the
envelope
- Soft Long – Soft curve with double the maximum time for each stage of the envelope
- Linear Long – Linear curve with double the maximum time for each stage of the
envelope
Long variants possess a maximum release time of 10 seconds.
Envelopes
• FILT-EG, AMP-EG, MOD-EG: These buttons selects which envelope generator the above
controls are representing.
Pressing the MOD-EG button again latches the assign mode - you will notice the LED
blinking to indicate you are in assign mode. Press again to exit assign mode.
TIP: Holding either the FILT-EG or AMP-EG button and changing the ADSR parameters
will alter all three envelopes simultaneously and is a useful shortcut to quickly change all
envelopes at once.
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