best archiver? (for music)
rsmith at xs4all.nl
Sun Mar 15 01:05:44 PDT 2009
On Sat, Mar 14, 2009 at 08:51:02PM -0700, Gary Kline wrote:
> On Sat, Mar 14, 2009 at 08:26:02AM +0100, Roland Smith wrote:
> > On Fri, Mar 13, 2009 at 08:05:59PM -0700, Gary Kline wrote:
> > > > lame -h -V 3 - nobody could tell the difference, it gives <200kbps bitrate
> > > > lame -h -b 192 - as above
> > > > lame -h -b 128 - they were able to tell difference, but not on all
> > > > music/songs
> > > >
> > > > lame -h -b 96 - i was able to tell the difference on every song, but it
> > > > wasn't really huge deal.
> > > my hearing is exceptionally good and while call myself an
> > > audiophile, having all my tunes right here at fingertips is
> > > a major win. having said that, can you point me to a basic
> > > tutorial on lame?
> > man lame
> GADGOOKS! that's no tutorial, that's *torture*. After i finally
> got caught up on miised sleep, a few hours ago I read-thru and
> listened-to (kttsd) the man lame. Then surfed around; then came
> back to the man page and read the several examples. So: the idea
> is that lame ["just"] converts WAV files to mp3.
Yep. That's what it does. It's the UNIX philosophy; do one thing and do it well.
If you're not an expert you should probably stick with one of the
--preset modes. E.g. '--preset medium' or '--preset standard'. That will
give you variable bitrate files with good quality.
> There is a gnome utility, sound-juicer than turns my CD's from
> wave to ogg-vorbis. I'm happy with ogg but would prefer flac
> ... but ogg is fine. mp4 is a dontknow. What I've got is good
> enough for now.
It looks like sound-juicer should be able to make flac files as well:
depending on if you have the right gstreamer plugins installed. The
freebsd port of sound-juicer depends on the ogg vorbis and flac
> > > i've got 1581620 blocks of mp3 @ 128kbit.
> > > lectures. when i tried to cut the quality even by a bit it was
> > > evident immediately. rar compresses these file to
> > > 1482404 blocks very very slowly. it probably makes sense to just
> > > burn the mp3 files to a dvd and be safe.
> > There is a special codec for speech. You'll find it the
> > audio/speex port. From the pkg-descr:
> > The Speex is a patent-free, Open Source/Free Software voice codec.
> > Unlike other codecs like MP3 and Ogg Vorbis, Speex is designed to
> > compress voice at bitrates in the 2-45 kbps range. Possible
> > applications include VoIP, Internet audio streaming, archiving of
> > speech data (e.g. voice mail), and audio books. In some sense, it is
> > meant to be complementary to the Ogg Vorbis codec.
> > This might perform better at compressing lectures.
> Sounds v promising, thanks.
> Given the availability of compression these days, it makes me
> wonder why telephone conversations still sound so 'tinny'. But
> then, that's another matter.
The speakers in telephones are tiny. That's probably a large part of it.
The codec used to digitize voice signals for current DECT phones, G.726
[http://en.wikipedia.org/wiki/G.726] dates from 1990, so it was limited
to the technology of that time. Modern codecs like speex probably do a
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