search for: mathdog

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2001 Sep 13
1
encoding documentation
...out audio compressing. I'm looking for documentation about Vorbis analysis, synthesis, coding and decoding. I took a look at Xiph page documentation section, but it's not complete yet. There's this site about encoding, but i only found information about Vorbis windowing: http://www.mathdogs.com/vorbis-illuminated/x62.html Thank you very much, Nilton __________________________________________________ Terrorist Attacks on U.S. - How can you help? Donate cash, emergency relief information http://dailynews.yahoo.com/fc/US/Emergency_Information/ --- >8 ---- List archives: http://w...
2001 Apr 25
2
q re vorbis packetizing in ogg stream
..., that the second and third headers share a page, at least in one .ogg I looked at. It seems like it would be easier for tools which manipulate the comment or codebook headers if each of these headers was required to be placed on its own page. Any thoughts on this? --Mike -- Mike Coleman, mkc@mathdogs.com http://www.mathdogs.com -- problem solving, expert software development --- >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...
2001 May 09
4
Can compressed music sound better than uncompressed?
I quote from "Principles of Digital Audio" by Ken C. Pohlmann: "Because perceptual coders tailor the coded signal to the ear's acuity, they similarly tailor the required response of the playback system itself. Live music does not pass through amplifiers and loudspeakers, it goes directly to the ear. But recorded music must pass through the playback signal chain. Much of the
2001 May 14
4
audio/vorbis media type registration
...ot;. <url:http://xiph.org/ogg/vorbis/doc/oggstream.html> [VORBIS] Xiphophorus company, "Ogg Vorbis Audio Bitstream". <url:http://xiph.org/ogg/vorbis/doc/vorbis-stream.html> [COLEMAN] Coleman, Mike, "Vorbis Illuminated". <url:http://www.mathdogs.com/vorbis-illuminated/> --- >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...
2004 Aug 06
0
No subject
.../ char **user_comments; int *comment_lengths; int comments; char *vendor; } vorbis_comment; 'user_comments' is the associative array of sorts that the usual comments are. 'vendor' is just a string that's also stored there. Read "Vorbis Illuminated" (www.mathdogs.com/vorbis-illuminated/) for how it's stored in the bitstream; it's stored before all the other comments in the comment header packet. Bitrates (what is 'bitrate_window'?) are stored in the parameter header packet. So changing what information stored in these places will break exi...
2004 Aug 06
0
No subject
.../ char **user_comments; int *comment_lengths; int comments; char *vendor; } vorbis_comment; 'user_comments' is the associative array of sorts that the usual comments are. 'vendor' is just a string that's also stored there. Read "Vorbis Illuminated" (www.mathdogs.com/vorbis-illuminated/) for how it's stored in the bitstream; it's stored before all the other comments in the comment header packet. Bitrates (what is 'bitrate_window'?) are stored in the parameter header packet. So changing what information stored in these places will break exi...
2001 Aug 09
2
Success
Do in part because of advice offered here, we were able to incorporate the an ogg-vorbis decoder into our software. The encode stays with another piece, and this has kept software size down considerably. I was wondering why the encoding was so large? And for my own benefit, are there some books I could study to learn the mathematical background (or anything else I would need to completely
2001 Sep 05
2
Understanding of Vorbis coder
Hi I have gone through the document available in the net regarding the Vorbis encoder /Decoder. Based on that i have prepared a understanding document on the encoder/decoder block. I would like to know whether my understanding of the coder is OK. If there are any other additional block /information pl. provide me with the same. Thanks and regards S.Padmashri <HR NOSHADE> <UL>