[PlanetCCRMA] Tuning Qsynth or fluidsynth

[Fernando Pablo Lopez-Lezcano]

On Tue, 2004-10-19 at 18:09, Andrew Wilson wrote:
> When I say "stuck", what I actually meant is that the jackd will only
> load at 44100, it will not load at 48k.  I haven't really had a close
> look but I assumed it was because jack had determined somehow that the
> card wasn't capable of more.
> 
> I had configured Qsynth to run at 48k and the result was 1 tone too
> high.  As soon as everything in the chain is at 44100 everything is at
> concert pitch and I can play along with other instruments. 
> 
> Now that you point it out, it doesn't really make sense as qsynth is
> producing 48k samples to be played at 44100.  Something in the chain
> is obviously making a correction or I would eventually be getting
> synchronisation problems with the qsynth sounds gradually falling
> behind as the extra samples have to be played.  But this doesn't
> happen (and I'm not complaining).

Hmmm, not really, the onset times of all notes are not tied to the
sampling rate but to the alsa midi sequencer sending midi to qsynth
(which does not depend on sampling rate). All notes will be higher or
lower in pitch and slightly shorter or longer than what they should be,
but the timing should be the same. 

-- Fernando

> On Wed, 2004-10-13 at 22:38, Mark Knecht wrote: 
> > On Wed, 13 Oct 2004 19:01:48 +0800, Andrew Wilson <djazz@myrealbox.com> wrote:
> > >  Rui and Mark, 
> > >  
> > >  Thanks for the advice.  It was indeed a mismatch between the card and the
> > > jack/qsynth/fluidsynth rate.
> > >  
> > >  It turns out that with my card I am stuck at 44100k so I will need to make
> > > sure that everything is at 44100.
> > >  
> > >  Cheers,
> > >  Andrew
> > >  
> > 
> > Are you stuck at 44100? Or stuck at 48000?
> > 
> > 1) If you have 44100 samples, and play them at 44100 - no problem
> > 2) If you have 48000 samples and play them at 48000 - no problem
> > 3) If you have 44100 samples, but are stuck at 48000 - 1 note high
> > 4) If you have 48000 samples, but play them at 44100 - 1 note low
> > 
> > I thought you said your notes played high?