similar to: Is there a set of test waves

I've been looking around for a tool to compare the quality of different audio files, didn't find anything, and so botched together something over the past few days: http://www.btinternet.com/~jfchapman/files/mcp.zip (Win32, 266Kb) It's just a small tool for playing up to 3 files simultaneously, with the ability to switch between the outputs to compare the sound quality (formats

I wonder what psycho-acoustic model is used in ogg vorbis. Did they create their own model (this requires big listening tests) ? Or is it something that was already there, like gpsycho ? <p>--- >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'

Hello everyone, I'm a student at the Universtiy of Delaware, and will be soon starting some research on the effects of lossy audio compression on speech sounds. I will be preforming test with both mp3 and vorbis. First of all, if I use the '--ogg' switch to lame, does lame use GPSYCHO to encode the wave, or some other psychoacoustic model (perhaps one designed for

You know it's good; I know it's good. I'm talking about Vorbis at 128 as it currently is in CVS. Please participate in a group listening test of various formats to show how Vorbis 128 has improved since RC2. I have prepared three sample music clips comparing Liquid AAC, MPC, pre-RC3 Vorbis, Lame, Xing, and WMA8, similar to the first test. Except I believe that this time Vorbis

I have spent quite some hours in the archives of this mailinglist and read a few threads mainly by Jeff Squyres and Monty about making oggenc multithreaded. Those threads all are dated around January 2001, quite a time ago. For my work experience period I have to implement a parallel (threaded) ogg encoder (If this is possible, of course.) If it can be done, the code will be given back to the

Hello everyone, ff123 compiled Monty's branch of the RC1 encoder, see his post on r3mix.net forum: http://66.96.216.160/cgi-bin/YaBB.pl?board=c&action=display&num=994299736&start=30 Anyway it only supports ~128kbps mode, so I did a quick listening test with some files that bugged vorbis beta4. grace.wav - the right channel is still a bit watery, and I think this can be seen

For those who haven't yet seen this: EarGuy's Digital Ear (physiological model of the ear based on work by Frank Baumgarte) has just finished rating the sound quality of Vorbis beta 4 at 128 kbs using 30 random 10-second selections of music: http://pub41.ezboard.com/fr3mixfrm4.showMessage?topicID=33.topic Two samples on which the Ear says Vorbis performed uncharacteristically poorly

Hi, We are working on Oggvorbis encoder porting on embedded platform. Where can we find good test vectors (wav files) for testing OggVorbis encoder? Does anybody have any idea. Parul Embedded Engineer Einfochips Ltd

Hi, I think that it would be a good thing to know more about those 2 projects (and also the future patent free format). I think that many people as me know about Lame, but not about Vorbis, and vice-versa. It would be fine that someone (perhaps the maintainer) of every project would introduce to both group of people those projects. 2 things would be interesting (to my mind): - to know about the

In vorbis/lib/mdct.h the following are defined: for integer: #define TRIGBITS 14 #define cPI3_8 6270 #define cPI2_8 11585 #define cPI1_8 15137 #define FLOAT_CONV(x) ((int)((x)*(1<<TRIGBITS)+.5)) for floats: #define cPI3_8 .38268343236508977175F #define cPI2_8 .70710678118654752441F #define cPI1_8 .92387953251128675613F #define FLOAT_CONV(x) = x Could someone explain where these values

Hi, does anybody know where I can find high quality samples that are in the public domain? It's a plus if they're samples that many codecs have problems with, because I want to use them for a blind test. Thanks. -- patrik_wallstrom->foodfight->pawal@blipp.com->+46-709580442 --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage:

Hello; I've been having a problem retrieving ANYTHING from CVS on your server for a few days. I can log in successfully and can begin checkout. However, it stops here: ... cvs server: Updating thread cvs server: Updating timing Regardless of what I try to pull, be it ices, icecast, or vorbis, it all stops on timing. Is that a known issue? Thank you.

Just looked at http://slashdot.org/articles/02/01/01/0931212.shtml. Why wasn´t this announced at this list? Anyway, terrific work you developers! /Andreas Karlsson http://www.ft2.net <p><p>--- >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'

I built out a simple CMS for websites that rely heavily on portfolios. This covers graphic and web designers in particular, but also other people with stuff to show off. It''s really easy to customize progressively, so that some people will only modify CSS, but others will dig deeper into Javascript behaviors and the Rails view code. Check it out at http://showcase.kylemaxwell.com/ SVN

Hi everybody: Due to popular demand, starting today I will announce to the list when a new Ogg Traffic issues comes out. So, a new Ogg Traffic is available at http://www.vorbis.com/ot/20030303.html. Enjoy! Carsten Haese Ogg Traffic Editor, Xiph.org Foundation <p>--- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from

Hi, When I built libogg2 for testing the new vorbose utility, gcc 2.96 stumbled over a portion from stream.c that mixes variable declarations with statements. The patch below fixes this. -Carsten. Index: stream.c =================================================================== RCS file: /usr/local/cvsroot/ogg/src/Attic/stream.c,v retrieving revision 1.1.2.12 diff -u -r1.1.2.12 stream.c ---

Guys (and girls), I\'ve been testing Ogg Vorbis quality at home, and I thought I\'d share the results with you. For those who want the conclusion, Vorbis 1.0 RC3 sounds better than LAME 3.70 vbr/cbr (which I\'m told now that it\'s broken for VBR), at less bitrate, however, it\'s not perfect (and probably never will, since it\'s a lossy audio codec) and could use some

Here's a tough file to encode well at 128 kbit/s average: https://www.idrive.com/miyaguch/files/Shared/?curr-node=8821135668693434409 "duel.wav" It is the first few seconds from "Duel of the Fates" off of the Star Wars I soundtrack. Vorbis beta 4 at 128 produces artifacts that sound like some tones are beating with others. I identified the Vorbis encode 16 of 16

I've made a large update to the introduction to compressed audio. I completely rewrote the first section, which I wasn't happy with. It now features two diagrams (worth 1000 words each!), and is broken up into a couple of sections. http://cs.leander.isd.tenet.edu/~mitchell/vorbis_intro.html I have also continued to tweak other sections based on feedback from email and this forum.

I've made a large update to the introduction to compressed audio. I completely rewrote the first section, which I wasn't happy with. It now features two diagrams (worth 1000 words each!), and is broken up into a couple of sections. http://cs.leander.isd.tenet.edu/~mitchell/vorbis_intro.html I have also continued to tweak other sections based on feedback from email and this forum.