I'm not doing my own podcast yet, but hearing the newbie podcasts the author refers to has given me lots of ideas on things to avoid when I do. They've also inspired me to first brush up on my mastering skills in Audacity (using techniques largely the same as what he describes in the article, but maybe more severe) and then my sox manpage-reading skills.
I ended up writing a script that goes through my whole podcast media directory, and automatically compresses and re-encodes (mono and with a lower bitrate) all the podcasts. In addition to making them a lot less painful, it lets me fit like 25 or 30 hours of podcasts on one CD to listen to on an MP3 CD player or my Nintendo DS in the car.
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Fixing podcasts with Audacity... and sox and lame
Posted by: raindog on March 29, 2006 07:22 AMI ended up writing a script that goes through my whole podcast media directory, and automatically compresses and re-encodes (mono and with a lower bitrate) all the podcasts. In addition to making them a lot less painful, it lets me fit like 25 or 30 hours of podcasts on one CD to listen to on an MP3 CD player or my Nintendo DS in the car.
The whole script as it currently exists is here:
<a href="http://www.kudla.org/podcastcarencode" title="kudla.org">http://www.kudla.org/podcastcarencode</a kudla.org>
But the sox command line took the longest to figure out, and here it is:
sox -V -v $maxfac $mp3 -c 1 -r 16000 -w<nobr> <wbr></nobr>/tmp/mp3carencode-$$.wav resample compand 0.1,0.5 -120,-20,-60,-15,-40,-15,-20,-9,0,-8 0 -15 0.5
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