Most common formula for time parameter mapping for envelopes
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- KVRian
- Topic Starter
- 513 posts since 3 Sep, 2009 from Poland
I use time = (10^x-1)*range for input 0-1 ... it turned out its bit "unnatural".
Is there any common exponential transform that feels more natural in the whole range?
Is there any common exponential transform that feels more natural in the whole range?
giq
- KVRist
- 383 posts since 28 Nov, 2013 from Germany
Hi itoa,
I found this blog series very helpful with regards to envelopes:
http://www.earlevel.com/main/2013/06/01 ... enerators/
I think your question is mainly answered in the second part.
I found this blog series very helpful with regards to envelopes:
http://www.earlevel.com/main/2013/06/01 ... enerators/
I think your question is mainly answered in the second part.
Passed 303 posts. Next stop: 808.
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- KVRAF
- 3080 posts since 17 Apr, 2005 from S.E. TN
An interesting question. Never wrote any softsynths.
Is it known that envelope knobs or sliders follow exponential curve? Maybe old synth controls are sometimes linear potentiometers, though there were common tricks to make linear pots behave somewhat non-linear according to what fixed resistors are combined in a network surrounding the linear control.
Presuming the early generation EG's had satisfactory control feel, most of the early units were not sophisticated, voltage controlled or whatever-- Just physical variable resistors and assorted simple control logic steering the various variable resistors into some kind of integrator.
If you can snag a few antique synths for temp testing, you could set up simple patches and record the audio envelope of various knob/slider settings to derive a pragmatic map of the relationship of control position vs time, and sustain control position vs level?
Is it known that envelope knobs or sliders follow exponential curve? Maybe old synth controls are sometimes linear potentiometers, though there were common tricks to make linear pots behave somewhat non-linear according to what fixed resistors are combined in a network surrounding the linear control.
Presuming the early generation EG's had satisfactory control feel, most of the early units were not sophisticated, voltage controlled or whatever-- Just physical variable resistors and assorted simple control logic steering the various variable resistors into some kind of integrator.
If you can snag a few antique synths for temp testing, you could set up simple patches and record the audio envelope of various knob/slider settings to derive a pragmatic map of the relationship of control position vs time, and sustain control position vs level?
- KVRian
- 519 posts since 12 Apr, 2010 from The Netherlands