I was just compressed a file with vorbis and I get a big glitch in the file when I play it back. Here's a picture of the sound (in SoundForge) before/after vorbis compression: http://www.artlum.com/pub/oggproblem.gif The top half of the image is the original wave file and the bottom half is the file after compression/decompression. The compressor was the latest Windows oggdrop, and I decompressed it with Winamp (after I heard the glitch durign Winamp playback). The track was track one of Equinoxe by Jean Michelle Jarre and the glitch appears 1.02 seconds into the track. I can send you a copy of the first few seconds if you want to try and debug it. MP3 does awful things to this CD even at high bitrates, you'll be glad to hear that Vorbis seems to do much better - apart from that big glitch at the beginning. -- <\___/> / O O \ \_____/ FTB. http://www.artlum.com --- >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.
On Wed, Mar 28, 2001 at 10:19:23PM +0100, Colin Dooley wrote:> > I was just compressed a file with vorbis and I get a big > glitch in the file when I play it back.[...]> The compressor was the latest Windows oggdrop, and > I decompressed it with Winamp (after I heard the > glitch durign Winamp playback).This sounds very much like a b4 file being played back in a b3 decoder. Beta 4 implements odd-sized LSP filters that beta 3 can't decode (the real bug is that beta 3 doesn't realize it can't decode it and makes a high-dB pop). Make sure that the Winamp you're using isn't a beta 3 version, and let us know if a b4 decoder also produces the problem. Monty --- >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.
On Wed, Mar 28, 2001 at 10:19:23PM +0100, Colin Dooley wrote:> > The compressor was the latest Windows oggdrop, and > I decompressed it with Winamp (after I heard the > glitch durign Winamp playback).Oh, that also exactly describes a beta 3 encode bug... Are you sure that the OggDrop encoder you have is b4? It's easy to check by looking at the encoded file. Bytes 128 through 144 should read: "Vorbis I 20010218" for beta 4. Monty --- >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.