[sdiy] Midi problems
Tim Ressel
madhun2001 at yahoo.com
Wed Apr 3 22:55:58 CEST 2002
Aha! That explains those wierd 2-byte
non-command-bit-set packets I see!
Its all becomming clear now...yeah, right!
--TR
> Most keyboards implement note off as a note on
> message with
> zero velocity. The reason being is that they can use
> running
> status. Running status allows one to not resend a
> status byte
> if the next message has the same status. So intead
> of a key
> down and up being:
>
> 0x90 0x64 0x64
> 0x80 0x64 0x0
>
> you'll have:
>
> 0x90 0x64 0x64
> 0x64 0x00 <= no need to resend 0x90
>
> A note on with velocity zero is equal to a note off.
>
> Tomy
>
>
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