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Jens M Andreasen wrote:

quoted text
> On Mon, 2010-04-12 at 00:52 +0100, James Morris wrote:

>

>> On Mon, April 12, 2010 00:38, James Morris wrote:

>>

>>> Hi,

>>>

>>> I'm pretty sure I've seen this dealt with on the list before, but can't

>>> find it.

>>>

>>> With the program I'm fumbling around trying to create, it will be possible

>>> for successive note on events for the same pitch to occur without note off

>>> events intervening.

>>>

>>> Does the MIDI spec allow such things?

>>>

>> Sorry to answer myself so soon...

>>

>> I guess it is allowed. The simplest case being a sequencer outputting to

>> the same channel and port as a keyboard player. Nothing can prevent this -

>> right?

>>

>>

>

> The question is what happens at the other end when a note gets struck a

> second time.

>

> a) Nothing, the note is already on.

> b) Re-trigger, the voice is reset and the note gets played from the top

> c) Trigger, a new voice is assigned and will play simultaneously to

> previous voices

>   

Important for polyphonic synth.
>> And there's no way in the world that missing note-offs could be added in,

quoted text
>> in a fashion guaranteed to cover all possible permutations of connections,

>> or without delaying the note-on which implies a missing note-off.

>>

>>

>

> An all-notes-off will take care of any missing note-offs

>   

This would stop every note of the channel receiving this control change

event, also the notes that were sent with a note off event, but that

still should play because of the ADSR release time.
>> James.

quoted text
>>

>>

>>> The bash-script prototype of the program did this, and, I believe, the

>>> soft-synths used, acted appropriately - that is, re-triggered the notes.

>>> So I guess the question is, does it make any difference if I add-in the

>>> note-off events - which, thinking about it, is going to be tricky because,

>>> basically, although the program is sequencing, it will be real time and is

>>> not psychic!

>>>

>>>

>>> Cheers,

>>> James.

>>>

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>>> http://lists.linuxaudio.org/listinfo/linux-audio-dev

>>>

>>>

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>

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