Re: [fluid-dev] sequencer / synth bug ?

[Antoine Schmitt]

Hi Mihail,

you mean that the 1ms accuracy of fluid may be the cause of the  
problem ? But the noteoffs are programmed about 7 ms after the  
noteons...

What do you mena by 'low latency tuning' ? Large playback buffers ?

One thing to note is that the midifile playing feature of fluidsynth  
does not use the fluid sequencer. As the problem happens with boths  
ways (my fluidXtra ises the sequencer, and the standard midifile  
playback does not), it means that it is related to the fluid  
synthesis itself, not a problem of accuracy in the sequencer. This  
rules out the sequencer as a cause of the problem, which is good to  
know.

Your points about aplaymidi loosing notes too, and well as rosegardan  
(even though it looses less notes) is interesting. It means that this  
midi file is touching some midi playing general limit.

Thanks for your help, I'm really try to understand and fix this problem,


Le 15 mai 07 à 21:50, Mihail Zenkov a écrit :

> On Tue, 15 May 2007 00:05:01 +0200
> Antoine Schmitt <address@hidden> wrote:
>
> > Hello Mihail,
> >
> > did you confirm your intuition on this ?
> > Can you explain more so that I can try to fix the problem ?
> > Thanks a lot,
>
> I do more tests - this bug more complicated then i think before.
> I try play this file on machine with low latency tuning. When i play
> directly with fluidsynth, i hear only few notes. Same with aplaymidi.
> But when i try play with rosegarden, i hear mostly all notes.
> I review some fluidsynth source: currently fluidsynth have 1ms
> accuracy, imho it not enough. Better rewrite all operations with time
> to float/double. IMHO with time accuracy associated 'hard to  
> reproduce'
> bug.
>
>
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++ as