[linux-audio-user] upsampling wav's - ardour sessions

R Parker rtp405 at yahoo.com
Sat Feb 26 13:01:40 EST 2005


> >You've already got libsndfile installed which
> includes
> >sndfile-resample. I'm not sure if you can convert
> the
> >rates, start jack at the new rate and open the
> Ardour
> >session without having Ardour complain.
> >
> well. In fact, ardour *complains* with warnings. How
> can I avoid it?

It's complaing because you haven't resampled to the
new rate. I'm trying to think of the easiest way for
you to create a working session with the new sample
rate but I'm not sure if it'll work.

I suggest, making a backup of the current session and
then 'cd sessionname/sounds' and convert the sample
rates from 44100 to 48000 with 'sndfile-resample -to
48000 inputfilename.wav outputfilename.wav'.

The remaining problem is that sndfile-resample can't
output with the same name of the input file so you
have to manually 'mv outputfilename.wav
originalfilename.wav' which is the filename that's in
the Ardour session file somename.ardour.

Maybe the way to test this method is to create a
simple Ardour session at 44100 and with one track.
Then do the above to that session. If it works, great.
At least you'll know what's gotta happen. If you've
gotta alot of sessions to convert then it might be
worth the time to do some scripting.


> The result is that the song is read at a different
> speed+pitch because 
> it was recorded as 44100 and now it is played at
> 48000. I can't 
> understand what do you mean.
> > In theory it
> >makes sense that you can because Ardour shouldn't
> care
> >about samplerate. It should look at jackd for the
> >currently running rate and examine the files to see
> >what rate they are. If they are the same, open
> session
> >and run. I guess you'll need to test that.
> >
> >ron
> >
> >  
> >
> >>but it's not debian-packaged yet and I'm too lazy
> >>now...
> >>maybe ecasound? but I'm afraid it doesn't consider
> >>so much things as 
> >>sr-convert...
> >>    
> >>

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