Sorry that I don't have a complete answer as I never tried to bend a pitch myself — not yet, but this is something I'm interested in myself but don't have time. To me, this is more about my interest in
microtonal music and related intonation systems. I'm very remotely familiar with such Arabic, Turkish and Indian music, and would be very interested is someone share any resources with related theory and audio samples.
As to C# MIDI Toolkit, I have not look at it for a while, but I'm afraid that if you failed to find bending, it means it is not available in the library. So, if source code is available (sorry, I don't even remember), your option would be expanding the library by adding bending, which is just an additional kind of MIDI sequence commands. If not, a lower-level MIDI interface is readily available and can by use in .NET via P/Invoke.
Start here:
http://msdn.microsoft.com/en-us/library/windows/desktop/dd743619%28v=VS.85%29.aspx[
^].
As to a possible microtone use of bending, please see my recent answer to a related question:
in need to use MIDI to play note?[
^].
In this post, I suggested how bending could be used and provide some more reference. I might give you an idea on how bending is operated via MIDI.
Sorry that I cannot give the answer that would resolve the problem, this is all I have at the moment.
If you want to discuss this or related topics, please send me some comments on this page.
—SA
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