Just a silly test. majordomo is acting up. Monty --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/
Hi there
If I correctly understood, Vorbis files have zero padding samples at the
beginning and at the end. Although someone fixed this bug, which added
some silence, sometimes the silence is still added at the end of files
(~0.01s), but only if the song doesn't end with silence.
Second, I tested encoding with simple 100Hz sine wave generated by cooledit
with peak set to -0.6dB. After decoding, the sine wave isn't any longer sine
wave. I don't know why clipping appeared in almost every frame (peak was
-0.6dB)
and some peaks were louder (a little), some were softer (a little), and the
sine sounded very distorted (of course, 0.01s of padding were added at the end).
Third, (I know it's all under heavy development yet, but) frequencies over
~16.5kHz are very attenuated just like in mp3 files. Maybe the psychoacoustic
works this way, I don't know, but if not, I think it should be fixed.
Thanks for replying and I apologize if I don't understand some basic rules
of
compressing sound. I'm only a music lover :)
I used yesterday's CVS version for testing.
Sathan Inc.
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Testing The last mail from vorbis ML archived at http://www.xiph.org/archives/vorbis/masterindex.html is dated december 2 ( saturday ). The last mail from vorbis-dev ML archived at http://www.xiph.org/archives/vorbis-dev/masterindex.html is dated december 4 ( monday ). What is going on ? -- David Balazic -------------- "Be excellent to each other." - Bill & Ted - - - - - - - - - - - - - - - - - - - - - - --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-dev-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
I got this test; I've noticed the same thing, and became quite puzzled... I initially chalked it up to some problems I was having with my domain's MX record, but maybe now it's not just me? :) Tom "Korpios" Tobin korpios@korpios.com http://www.korpios.com/ On Thu, 7 Dec 2000, David Balazic wrote:> Testing > > The last mail from vorbis ML archived at > http://www.xiph.org/archives/vorbis/masterindex.html > is dated december 2 ( saturday ). > > The last mail from vorbis-dev ML archived at > http://www.xiph.org/archives/vorbis-dev/masterindex.html > is dated december 4 ( monday ). > > What is going on ? > > -- > David Balazic > -------------- > "Be excellent to each other." - Bill & Ted > - - - - - - - - - - - - - - - - - - - - - - > > --- >8 ---- > List archives: http://www.xiph.org/archives/ > Ogg project homepage: http://www.xiph.org/ogg/ > To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' > containing only the word 'unsubscribe' in the body. No subject is needed. > Unsubscribe messages sent to the list will be ignored/filtered. >--- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.