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what are the main fields where optimisation will take place to improve the CPU use when decoding Ogg Vorbis files? -- Venlig hilsen/Kind regards Thomas Kirk ARKENA thomas@arkena.com http://www.arkena.com "I was drunk last night, crawled home across the lawn. By accident I put the car key in the door lock. The house started up. So I figured what the hell, and drove it around the block a

Frank Klemm made the clip to test short block switching - it's made of series of short periodical 'pulses', and this period gets smaller as time passes. You can get this file at: http://www.uni-jena.de/~pfk/Short_Block_Test.wav.gz.gz (1.6MB) (uncompress it twice with gzip) I used oggenc beta3 & mp+ 1.7.8 Oggenc gave 160kbps using mode -b 256 mp+ gave 350kbps (using

...1.5M L1 code caches ;-) Slowest parts now are: -- mdct -- vorbis_lsp_to_curve (and the exp()'s afterwards, in fromdB macro; eliminated most of-em, but not all). -- main (the float to s16 loop) Hope to send a patch tomorrow, as the sneakernet had some transmission problems today :-| Dagdag, Segher --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/

Morning all: I'm looking for the vorbis perl bindings. Did they not used to be on vorbis.com in the download area? Anyway, they seem not to be now. Anyone know where they are? Geoff. --- >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

...all these zeroes is too much; high freqs suffer. Maybe this table shouldn't be static, but instead calculated every frame. I'll do some more testing. Oh, vorbis is not doing anything to compensate for mdct aliasing effects, or am I missing something? I'll try to hack some in as well. Dagdag, Segher --- >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...

Hi again, On a related not, I think I read in the mailing-list archives that the Pentium III wasn't "ideal" for .ogg operations; are AMD's processors more appropriate/do they perform better? Thanks, Joane _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. --- >8 ---- List

I was wondering about Vorbis compatibility. It seems that wavelets and joint-stereo could be introduced later on Vorbis. I know the specifications are now frozen, but there is no real spec docs yet. So will the vorbis players still be able to decode Vorbis once joint or wavelet will be introduced, or will they need to be updated? Regards, -- Gabriel Bouvigne - France bouvigne@mp3-tech.org

Hi, after reading the IRIX Digital Media Audio library documentation and starting to code an IRIX output plugin for libao and afterwards realizing there was already one on the CVS tree (almost identical to what I had up to that point, no wonder) and getting the rest of the vorbis tarball to compile under IRIX with the MIPSpro compiler only to find out the plugin was wrong and after going

Hi guys, I'm working doing the Java->JNI->OggVorbis thing. As a test to get me going, I've just written a quick routine that dumps info about the file test.ogg in the current directory. The problem arises when I call ov_clear. I get a segfault everytime. Note that I am *not* doing any decoding (ov_read) at all, just ov_comment and ov_info. Should I only call ov_clear if I have

...erent things 3) combine 1 and 2 4) if a psycho model is good, after leaving out what it tells you you can without hurting quality, applying the same model should yield the same results as you got before 5) from 4: decode -> encode -> decode should result in (almost) the same stream. Dagdag, Segher --- >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...

I've noticed that oggenc reliably crashes my K6-200 box after a few minutes of encoding. Has anyone else experienced crashes like this? Surely it must be a hardward fault, or perhaps a K6 problem (this processor has some errata). Still, I'm surprised that nothing else I do with it seems to hang it. Has anyone else seen anything like this? --Mike --- >8 ---- List archives:

> From: "JD Conley" <jdc@malibuboats.com> > To: "'vorbis@xiph.org'" <vorbis@xiph.org> > Subject: RE: [vorbis] new MS codecs > Date: Thu, 14 Dec 2000 10:49:58 -0800 > X-Mailer: Internet Mail Service (5.5.2653.19) > Reply-To: vorbis@xiph.org > > Oh yeah, they have some samples on their site. Interestingly enough, they > don't

Could someone point me to the BARK/MEL tables that these macros (from vorbis/scales.h) are trying to approximate? #define toBARK(f) (13.1*atan(.00074*(f))+2.24*atan((f)*(f)*1.85e-8)+1e-4*(f)) #define fromBARK(z) (102.*(z)-2.*pow(z,2.)+.4*pow(z,3)+pow(1.46,z)-1.) #define toMEL(f) (log(1.+(f)*.001)*1442.695) #define fromMEL(m) (1000.*exp((m)/1442.695)-1000.) I was wondering if I could come

I've been reading up on wavelet transforms the past week, and I plan to start on some video compression stuff next week, if it's any good (small chance :)) for Tarkin. So far I think I know what's happening, however there's one small thing I don't quite understand yet. If I understand correctly, you can do a 2d wavelet transform (I'm assuming a Haar transform here for

A record company is releasing next month what it calls copy-protected CDs which apparently cannot be ripped by CD readers. Major labels are waiting to see how it goes. http://news.cnet.com/news/0-1005-200-4099854.html --- >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

Sorry for starting another topic, this is actually a reply to Segher's post on Sun Oct 22 on the 'mdct question' topic. I wasn't subscribed properly and so I didn't get email confirmation and thus can't add to that thread. So Segher, if the equation is indeed what you say it is, then replacing mdct_backward with this version should work, but it doesn't. Am I applying

Dear Developer Team (Monty/Michael Smith/and others), It seems you get angry for me, but I don't understand why. I don't want to dispute with you, but maybe I forgot to say some things... Here they are: 1. My program (clone) is not a finalized, and NOT A RELEASED (public) program. This is just a test, I wrote it to myself, to the (sound quality) comparsion of MP3 and OGG. 2.

Hi everyone, first of all, I searched through the archives for any posts resembling this, I didn't read all posts about the patents so if this has been suggested before I apologise. I read in an article on C|Net (I think, it was linked from Slashdot anyway) that Thompson are threatening to sue you if Ogg Vorbis becomes a success. Which is evil, and I'm also mad at them because they never