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Kyoto92
Joined: 23 Nov 2021 Posts: 35
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Posted: Tue Feb 08, 2022 6:52 am Post subject: Change attack & release on PCM sounds? |
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Hi everyone,
Is it possible to change to change the attack and release (and other parameters such as cutoff) on the PCM sounds? I really like lofi-ish organ sounds with long decay and wonder if the microkorg XL+ is a good fit. |
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OpAmp Platinum Member
Joined: 07 Jun 2013 Posts: 1175 Location: Brussels, BE
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Posted: Tue Feb 08, 2022 9:30 pm Post subject: |
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Hi,
Yes that is perfectly possible.
When using a PCM, you actually replace an oscillator waveform by a sample player. The rest of the signal chain remains as is (mixer, filters, VCA, effects).
Even better, the PCM samples have some looping point built in so that they don't decay (immediately) and can sound forever.
E.g. for a piano sound or a bell sound you actually need to setup a proper VCA envelope (decay, sustain, release) to make it sound as the accoustic instrument itself. Otherwise, only the start of the sample is recognizable.
Changing the attack is more problematic for typical instrument sounds as piano and bell, because it affects the intro of the sample and can cut away the characteristic onset of a note.
Now real organs don't really have outspoken decay or release, so a simple rectangular envelope gets you started already.
Note:
* the samples are not too bad, but don't expect the best quality. E.g. the piano is not a grand multi sample velocity layered thing.
* take care with long releases. As the board has only 8 voices, at some point in time notes in the release stage will be cut and replaced for new notes coming up. It depends a bit what you understand under long and how complex your sound programming is. (E.g. two timbres, unison, a lot of movement, mono vs poly) Depending on that 8 voices can be a limitation or not if the cut voice is already quite low in amplitude and burried in the other voices.
Have fun. _________________ microKORGXL, Kaossilator Pro, monotribe, SQ-1, volca fm, Kross 88 BK
Alesis SR18, Akai Miniak, Fender Strat, Line 6 Spider II 112, Zoom MS-50G |
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Kyoto92
Joined: 23 Nov 2021 Posts: 35
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Posted: Wed Feb 09, 2022 5:54 am Post subject: |
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OpAmp wrote: | Hi,
Yes that is perfectly possible.
When using a PCM, you actually replace an oscillator waveform by a sample player. The rest of the signal chain remains as is (mixer, filters, VCA, effects).
Even better, the PCM samples have some looping point built in so that they don't decay (immediately) and can sound forever.
E.g. for a piano sound or a bell sound you actually need to setup a proper VCA envelope (decay, sustain, release) to make it sound as the accoustic instrument itself. Otherwise, only the start of the sample is recognizable.
Changing the attack is more problematic for typical instrument sounds as piano and bell, because it affects the intro of the sample and can cut away the characteristic onset of a note.
Now real organs don't really have outspoken decay or release, so a simple rectangular envelope gets you started already.
Note:
* the samples are not too bad, but don't expect the best quality. E.g. the piano is not a grand multi sample velocity layered thing.
* take care with long releases. As the board has only 8 voices, at some point in time notes in the release stage will be cut and replaced for new notes coming up. It depends a bit what you understand under long and how complex your sound programming is. (E.g. two timbres, unison, a lot of movement, mono vs poly) Depending on that 8 voices can be a limitation or not if the cut voice is already quite low in amplitude and burried in the other voices.
Have fun. |
Thanks for the elaborated reply! Yeah I know note stealing could be an issue on long releases. I have a Minilogue xd and manage with it, but Sometimes I need 5-note chords and that's kind of an issue with the minilogue. |
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