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
> 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.I have a small collection from before the Motherfish-II crash I shall put back up somewhere folks can get to them. They're not a complete glass-box set; they hit all the basic features, but do not attempt to break encoders with out-of-range or unusual-but-legal techniques. Regardless, they an good basic test set. Monty
On Mon, Feb 20, 2006 at 07:31:40PM +0530, parul wrote:> 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.You might also look at the file set the lame project has used in tuning their encoder. Many of these are quite difficult to handle: http://lame.sourceforge.net/gpsycho/quality.html And a small suite used in some of the MPEG development: http://sound.media.mit.edu/mpeg4/audio/sqam/ Of course it is also important to just test with a diverse set of music; anecdotally many encoders have been largely tuned by one or two people with good ears using a handful of favorite tunes, with only occasional feedback from more objective testing. HTH, -r
Ralph Giles wrote:>On Mon, Feb 20, 2006 at 07:31:40PM +0530, parul wrote: > > > >>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. >> >> > >You might also look at the file set the lame project has used in tuning >their encoder. Many of these are quite difficult to handle: > > http://lame.sourceforge.net/gpsycho/quality.html > >And a small suite used in some of the MPEG development: > > http://sound.media.mit.edu/mpeg4/audio/sqam/ > >Of course it is also important to just test with a diverse set of >music; anecdotally many encoders have been largely tuned by one >or two people with good ears using a handful of favorite tunes, with >only occasional feedback from more objective testing. > >HTH, > -r > > > >Hi Ralph, Thanks for the links. But the first one ( LAME) contains wv files. Are they wav files only which can be used as input to OggVorbis encoder. As far as i know .wv files are also compressed files (not sure). I am not sure how to use these .wv files as input to OggVorbis encoder. And for second suite used in MPEG development, that looks fine. But the links goes to its ftp site and i am not able to download those. Any help. Parul
On Tue, Feb 21, 2006 at 01:06:30PM +0530, parul wrote:> Thanks for the links. But the first one ( LAME) contains wv files. Are > they wav files only which can be used as input to OggVorbis encoder. As > far as i know .wv files are also compressed files (not sure). I am not > sure how to use these .wv files as input to OggVorbis encoder.They are in a lossless compressed audio format. The page has a link to decoder software.> And for second suite used in MPEG development, that looks fine. But the > links goes to its ftp site and i am not able to download those. Any help.I had no trouble downloading the audio files. -r