[sdiy] MIDI Pitch Bend & Channel Pressure

[Seb Francis]

Here's a good online MIDI spec ..
http://www.borg.com/~jglatt/tech/midispec.htm

Channel pressure and Pitch Bend are indeed sent as their own type of 
MIDI message.

The reason these are not simply normal MIDI controllers is twofold:

(1) In the case of Pitch Bend only, the data is 14bits wide (to help 
prevent 'staircasing' as you put it, although the actual used resolution 
depends on the devices sending and receiving the data)

(2) To save transmission bytes to help avoid clogging the MIDI bus with 
these typically high data rate controllers.

Seb



Chris Manders wrote:
> Hi folks
>
> Could anyone point me in the direction of an
> explanation of how MIDI Pitch Bend and Channel
> pressure are transmitted and received, please?
>
> I understand that they are not in the standard
> controller list, and handled in a special way in order
> to prevent 'staircasing'.
>
> If anyone can assist, it would be most appreciated.
> My conventional websearch has found nothing - Many
> pages on Midi Controller data, but nothing on Pitch
> bend and Channel pressure.
>
> Thanks
> Chris
>
>
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