[sdiy] Tips for writing a MIDI parser wanted

[Ingo Debus]

Am 24.03.2009 um 21:13 schrieb ASSI:

> On Dienstag, 24. März 2009, Ingo Debus wrote:
>> But only if an active sensing msg has been received recently - many
>> MIDI devices don't send active sensing at all. You'd be shutting
>> off the notes all the time.
>
> The MIDI spec says that active sensing is to be activated if you have
> been receiving at least one active sense byte and no provision is made
> to switch it off based on the reception (or not) of further active
> sensing events.  You would have to receive a system reset to revert to
> default state

You mean, once a active sensing message has been received, notes have  
always to be shut off when no more active sensings are coming in?

This seems a bit problematic to me. Imagine someone hooks a keyboard  
that is sending active sensing messages to a synth, then switches to  
another keyboard (either by hot-plugging or by a MIDI switch) that  
doesn't. It just wouldn't work. Since most musicians aren't MIDI  
wizards they surely would think either their synth or their keyboard  
had gone bad.

Ingo