Re: Micro tuning the AUSampler in iOS
Re: Micro tuning the AUSampler in iOS
- Subject: Re: Micro tuning the AUSampler in iOS
- From: Lukas Bühler <email@hidden>
- Date: Fri, 30 Dec 2011 22:50:58 -0500
Thanks for the help, that looked like the thing I was looking for! So I read up on modes and poly and set the mode change messages to omni off (B0 7C 00), but to no effect...
I really wonder if the iOS AUSampler supports omni off /poly? It would use quite some resources, so maybe Apple has does not support it?
Any other ideas?
-Luke
On Fri, Dec 30, 2011 at 8:01 PM, Brian Willoughby
<email@hidden> wrote:
Are you familiar with the MIDI Specification for Channel Modes? The default "power-up" conditions are recommended as Channel 1, Omni On/Poly, otherwise known as Mode 1. In this mode, the channel number is basically ignored, which would seem to explain why your pitch bend messages are affecting all channels.
I recommend that you send a Channel Mode message to select Omni Off. You should certainly do this at startup or whenever a new MIDI destination is selected, and perhaps also after a preset change. If this does not solve your problem, then look deeper into the MIDI Specification, starting with Poly/Mono and related modes.
Brian Willoughby
Sound Consulting
On Dec 30, 2011, at 15:30, Lukas Bühler wrote:
I'm developing an iOS instrument using the UASampler audio unit and I want to support micto tuning. Currently I'm playing each note in a different channel and I send pitch bend MIDI messages to micro tune that note. What happens though is that all channels are pitch bend not just the one I send the bend message to.
Does the AUSampler not support pitch bend on the individual channels? Anybody know how to do this?
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