[vorbis-dev] comparisons

[prabu]

Nelson,
LZV based compression tools are suitable only for files with a predictable
set of values in them, unlike audio files. So they cannot compress MP3 files
much, which are already "redundancy-removed" through Huffman algorithm.

----- Original Message -----
From: Nelson Rush <chesterrr at att.net>
To: <vorbis-dev at xiph.org>
Sent: Tuesday, August 22, 2000 5:12 PM
Subject: [vorbis-dev] comparisons

> I converted the 128kbps tom.mp3 file into a .wav and then used oggenc -m 2
> to
> laterally encode it to 128kbps tommy.ogg format. I noticed that it gets
very
> close to the size of an mp3, great job guys. Then I got to thinking that
> maybe it could be compressed further with gzip so I tried it. I also
gzipped
> the mp3 to compare and it looks like the mp3 gzips better but gzipping the
> ogg file will get the size a bit smaller than an ungzipped mp3. I'm not
sure
> if it's really worth the decompression overhead, although gzip is pretty
> fast even though I used -9.
>
> Sorry if I'm a bit naive about compression. ;-)
>
> -rw-r--r--   1 palisade users          4007318 Aug 22 16:31 tommy.ogg
> -rw-r--r--   1 palisade users          3989911 Aug 22 16:57 tommy.ogg.gz
> -rw-r--r--   1 palisade users          3991638 Aug 22 16:41 tom.mp3
> -rw-r--r--   1 palisade users          3959108 Aug 22 16:48 tom.mp3.gz
>
> Sincerely,
> Nelson Rush
>
> "<Operandi> well flog me like a misbehaving circus clown"
>
>
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> List archives:  http://www.xiph.org/archives/
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>

--- >8 ----
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