For those diving into the instrument editors...
I had someone rather puzzled by the fact that he didn't seem to get much response from the frequency envelope controls. The reason was that he had a very short
amplitude envelope.
An excerpt from the notes!
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The first thing to keep in mind is that
amplitude envelopes (particularly release time) set the point at which a note ceases. Frequency/filter envelopes can be shorter, so their effect stops part way, but if they are longer, the last part will be ineffective.
Across all three engines, and kits (if kit mode is active) it is whichever is the longest that sets the overall time of the note, and you may well hear other sections stop if the times are sufficiently different.
Also, within AddSynth itself, it is which ever voice has the longest envelope that sets the overall voice time, and if you set voices with very different characteristics you can hear the shorter ones finish before the overall sound stops. Bear in mind, that each voice can also have a start delay set, so you can get a late sound pickup that is then the last bit you hear, even if it's quite short. However, if the start time of one voice is after all the others have finished it will never sound.
This sort of idea works best with 'Forced Release' disabled.
An unexpected twist to this, is that taking the combined voice envelope time against the main (global) AddSynth envelope, although attack and decay times follow the above pattern, it is which ever (the voice group or the global value) has the
shortest release that sets the AddSynth time as a whole. This can really catch you out!
With regard to the
modulator amplitude envelopes. They don't change the overall time, but if they are shorter than their voice length (or any voice that the modulator is slaved to) the modulation may end a bit strangely. If they are longer, then part of their action will be missed. Also, when using the
Morph type, you
must have an envelope set, as this is what controls the way the sound morphs between the voice oscillator and the modulator one.
Finally, there is what I believe to be a bug that goes back to Zyn 2.2.1 - original Zyn
If an AddSynth voice is enabled, it's amplitude envelope time is active, even if the envelope is apparently deactivated and not editable. Oh, and by default all the voice times are quite long, so again you could be puzzled as to why a sound is longer than you expected. Because this has always been there I don't propose to change it. To do so would quite likely alter many existing instrument patches, but do keep it in mind.
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