On Mon, 2007-02-19 at 15:31 -0500, H.S. wrote: > 1. If the input waveform seems to go beyond the +1 and -1 scale, what > does that signify? I assume that shows recording circuit is being > saturated and that the output from mixer should be reduced.
I think that's correct. "Any waveform that goes above 1.0 or below -1.0 will be clipped and will result in distortion." From http://www.guidesandtutorials.com/audacity-tracks.html I have only dabbled a little bit with Audacity myself, so I could be wrong of course. For these kind of non Debian specific questions, I suggest you try the mailing lists and forums for Audacity itself. > 3. On a machine, I exported a portion of the captured audio to a wav > file (basically, saved a portion of the input). I then transfered it to > my home computer running Debian. While that sound wave file was shown > between +1 and -1 in the original machine, on my home machine is was > being shown between +0.5 and -0.5 in audacity. What gives? I think this is just an arbitrary value. You can zoom in and out to show it in a different scale. > In essence, I want to > call a script that converts all wav files in a directory to mp3 files. > And of course, I would like to be able to set the bitrate in the script. > Suggestions on which tool to use for this? You will need the "lame" package from the unofficial Debian Multimedia repository as Debian does not ship an mp3 encoder. http://debian-multimedia.org/ > 2. I can export to ogg format from audacity. Can I do the same thing as > (1) for this as well? Does ogg format support tags? Yes, with oggenc from the vorbis-tools package. And yes, Ogg support tags. I suggest you use your favourite scripting language (Bash, Perl, Python etc.) and write a small script for calling lame or oggenc and reading the tags from a file. HTH, -- Cheers, Sven Arvidsson http://www.whiz.se PGP Key ID 760BDD22
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