[LAU] half a tone upper than the reality [qsynth/jack]

Ray Rashif schivmeister at gmail.com
Fri Apr 11 11:58:21 EDT 2008


Most probably. This is what's missed most of the time if the user doesn't
understand the process of up/downsampling. During sequencing the audio files
are upsampled live if the project is at a higher rate, and depending on
hardware the results vary significantly (you can notice the waveform
becoming narrower). Moreover, each application has its own settings for
sample rate and they should all be reflecting the same numbers.

On 11/04/2008, James Stone <jamesmstone at gmail.com> wrote:
>
> Maybe it has something to do with the sample rate jack is running at
> 44100 or 48000?
>
>
> James
>
>
> On Fri, Apr 11, 2008 at 4:25 PM, Aurelien <orl at ammd.net> wrote:
> > Hello,
> >
> >  I'm experiencing some tonality problems with qsynth and jack.
> >  I use them on a Debian SID, with non-realtime kernel.
> >  I use both rosegarden and nted, and both package give me the same
> >  results.
> >
> >  The problem is very simple : all the "melodic" instrument are played
> >  half a tone upper than they should (a A sound like a A#).
> >  I thought the problem was coming from my non-realtime kernel, but a
> >  friend of mine has the same problem on an Ubuntu Studio distribution
> >  with a realtime kernel and realtime enabled in jack.
> >  The problem doesn't come from the soundfonts we use (there are many,
> >  Crisi General 1.8, Super Evandro Drummer, and others...), as another
> >  friend of mine, running also with Ubuntu Studio and the same settings
> >  than the previous one (buffers sizes, etc.) doesn't have the problem.
> >
> >  I don't know what from it could come.
> >
> >  Any idea?
> >
> >  Thanks a lot.
> >
> >  --
> >  ==============================
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