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Author Topic: Glissando/Portamento confused after playing 2 overlapping notes  (Read 2494 times)

Patrice

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Glissando/Portamento confused after playing 2 overlapping notes
« on: February 09, 2010, 06:39:09 pm »
Pressing two keys simultaneously while glissando (or portamento) is on locks the glissando off. Then If you hit these keys one after the other carefully, glissando doesn't restart. You have to hit a third other key to unlock the glissando.

Of course there is no point pressing two keys at the same time when using glissando. But when playing, it may happen that the second key is hit while the first is still down. And the effect is the same as above. This results in a glissando that sometimes seems to be missing.

Niccolo

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Re: Glissando/Portamento confused after playing 2 overlapping notes
« Reply #1 on: February 10, 2010, 11:09:44 am »
This is a normal consequence of the way we (and analog synths manufacturers) handle polyphony. To understand that, you must go into some details about the glissando:

The glissando feature from the Origin works voice by voice: let's say you play a key on the 1st voice (i.e. no other key is held). The glissando (and portamento) will make pitch slide from the previous key played on that voice to the new key. Now if you play a second key while holding the first, the note will be played by the 2nd voice, so it will from the last note played on the 2nd voice (if any) to the new one. In general, the last key played on the 2nd voice is not the same as in the 1st voice.
So there are two ways to do what you want:

- you can make the last played note on the 2nd voice be the same as the first note you're holding. If you are in a Poly Circular mode (the same key can generate many voices), and have some release in your sound, you can do this by pressing twice your first note. Then hold it, and play the second: the glissando will work.

- the better solution is to use a monophonic play mode. I suggest you Mono Last with Legato enabled.

Hope it is was understandable!

Patrice

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Re: Glissando/Portamento confused after playing 2 overlapping notes
« Reply #2 on: February 10, 2010, 12:57:55 pm »
I didn't realize it was that tricky!
The second solution will do.
Thanks for this clarification.

 

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