text console tools for audio processing

[Chuck Hallenbeck]

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Wedit uses 16 bit signed samples, one or two channels, in memory. So
much of what you need to do is beyond the scope of wedit, I'm afraid. I
have a system with a GB of memory and sometimes run into things I can't
handle too. But most of my work is much less demanding than you
indicated.

So, if wedit can't handle it, there's always the underlying standard
apps to fall back on. But as you know, when sox works on a huge file
you may as well take a nap until it finishes. If you can put your task
in memory, it is instantaneous.

Chuck


On Mon, Jun 16, 2008 at 03:56:16PM -0400, luke wrote:
> On Mon, 16 Jun 2008, Chuck Hallenbeck wrote:
> 
> > You can identify a point in a file either by percentages, or by
> > minutes:seconds. A number without a colon is interpreted as a percent
> > of the total length, a number with a colon is taken as minutes colon
> > seconds, with the seconds part permitting a decimal point.
> 
> Meaning that I would need "00:30.5" to reach thirty and a half seconds?
> 
> > Copy, snipp8ing, killing, and zapping a region of a track is done
> > natively by wedit rather than relying on soc, since it is perfomred on
> > the memory image of the file, not the file itself. Edges produced by
> 
> I see.  That is fine, but it raises the issue of what kind of image you 
> are working with, and how you handle, huge files.  Sox for example, uses 
> 32 bit unsigned PCM data for its work, converting in and out of that as 
> necessary, meaning that wave files are the best intermediate format if you 
> want to avoid transcoding artifacts.
> 
> As for huge files: I frequently work with DVD audio rips ("mplayer dvd://1 
> -ao pcm:file=blabla.wav"), which can end up being two-six hours of 48K 
> stereo audio, which results in wave files between 400MB and a few GB.  
> Those are not going to make it into memory on any of my home systems.
> 
> I should just RTFM, I know.
> 
> Luke
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- -- 
The Moon is Waxing Gibbous (97% of Full)

My web site: http://hallenbeck.ftml.net and my cell phone: 1-518-334-9022.
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