[PD] Sample loop - start and end point (WAV files)

Ingo ingo at miamiwave.com
Wed Feb 12 09:32:34 CET 2020

There are softwares like AwaveStudio that do nothing else but format 
conversion between different sampler formats that can handle the loop points 
as well.

> I have been working with hardware samplers since the 80ies and used
> (mainly) softwares like SoundForge or Wavelab for looping.
> There was no extra file. All hardware samplers could read the loops. Once a
> file was looped with one sampler it would be looped with the next one.
> Same thing with modern software Samplers like Kontakt.
> I can use a sample that I looped in Wavelab and load it into SoundForge and 
> it
> recognizes the loops.
> (There are options for multiple loops, though that might not work with some
> samplers.)
> It can't be such a secret since over 30 years that all manufacturers 
> (software
> or hardware) know about it but noone else.
> I have been looking around but couldn't find any information where the
> loops are stored in the file but they definitely are.
> Ingo
> > -----Original Message-----
> > From: Pd-list [mailto:pd-list-bounces at lists.iem.at] On Behalf Of Roman
> > Haefeli
> > Sent: Wednesday, February 12, 2020 8:48 AM
> > To: pd-list at lists.iem.at
> > Subject: Re: [PD] Sample loop - start and end point (WAV files)
> >
> > On Tue, 2020-02-11 at 21:22 -0800, Alexandre Torres Porres wrote:
> > > Well, I was really really hoping to see information here on how to
> > > get loop points from these files ;)
> >
> > I looked around for specifications of the .wav-format and I wasn't
> > able to find one that looks canonical. The ones I found didn't mention
> > any loop start- and endpoints. I wonder whether there is a convention
> > about how to encode this into some sort of metadata stored with file.
> > Some description of the format describe the ability to store anything
> > as metdata. Personally, I never dealt with such files (at least not
> > knowingly). Maybe a good start would be to provide such a file, so
> > that people can a have a look at it. It might be not that difficult to
> > retrieve such data with something like mrpeach's [binfile], once you know
> how it is stored.
> >
> >
> > Roman

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