Subject: Re: [linux-audio-dev] [ann] pvoc-0.1.0, caps-0.1.11
From: Tim Goetze (tim_AT_quitte.de)
Date: Thu Mar 25 2004 - 00:37:25 EET
[Jesse Chappell]
>Erik de Castro Lopo wrote on Thu, 25-Mar-2004:
>
> > > >I just realized that you may not want to clamp if your output
> > > >is a 32 bit float or double, as it is fully capable of handling
> > > >the value as produced. For instance, if (well, when) we suck this
> > > >algorithm into ardour we don't need to clamp, as our internal
> > > >format is float.
> > >
> > > true. i'll make it an option.
> >
> > Correct me if I'm wrong, but isn't clipping only a problem when
> > converting to integer PCM sound file. If that is the case, you
> > can leave the data unclipped and let libsndfile do the clipping
> > by using this:
> >
> > http://www.mega-nerd.com/libsndfile/command.html#SFC_SET_CLIPPING
>
>Beautiful! Erik to the rescue, this is the correct solution.
>Throw out my patch and replace with a call to do that.
yes, but ... :)
stretch isn't using sndfile for piped I/O which needs clipping too (i
wish i could use it but sndfile doesn't like pipes, at least not the
versions that compile in ancient build environments like mine).
pvoc-0.1.6 (current) adds a new -l (--limit) option that turns on
clipping. later versions' man page will recommend its use with int
output.
tim
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