Shifting pitch in a MIDI file?

Ralf Mardorf ralf.mardorf at
Mon Dec 13 23:50:12 GMT 2010

On Mon, 2010-12-13 at 22:49 +0000, Angel de Vicente wrote:
> Hi,
> On 13/12/10 17:59, Lars-Erik Helander wrote:
> > I have had similar problems in the past with Qsynth and the remedy was
> > - as indicated by others in this thread - to make sure that the
> > sampling setting in Qsynth matches that of Jack (44100 or 48000). In
> > case you are unsure how to set it up properly, press the "Setup"
> > button of Qsynth, then select the "Audio" tab and try the various
> > options available for "Sample Rate". The ones most likely to work
> > would be 44100 or 48000.
> yes, that was the problem. Jack was set to 48000 while Qsynth was set at 
> 44100. When both are at 48000 the "Free Music Instrument Tuner" reports 
> a nice 440Hz Concert A with the Virtual Keyboard. But this doesn't seem 
> to affect the other synth that I tried: ZynAddSubFX: with this one, 
> either 44100 or 48000 sample rate produce a concert A in tune...
> In any case, I think the problem can be considered solved now. Thanks a lot,

Yep, IMO the issue is solved and a report to Rui, the coder of the
'Q'thingies  (or to the folks who program FluidSynth) might be useful.
There should be no need for musicians without technical knowledge, to
run into this trouble. Sample rate conversion should be done

> Ángel de Vicente
> -- 
> High Performance Computing Support PostDoc
> Instituto de Astrofísica de Canarias
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