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 supported are mp3,ogg,wma,wav). Anyway, hopefully someone will find it useful. Thanks, Jimbo <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' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
On Mon, Jan 07, 2002 at 09:20:22PM -0000, James Chapman wrote:> 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 > supported are mp3,ogg,wma,wav). > > Anyway, hopefully someone will find it useful.Is this application pre-decompressing the mp3/wma/ogg inputs? Don't forget that processor noise shows up on most internal soundcards, and the harder the processor works, the more noise. Also, for the *NIX folks out there who have noticed that abx.c and linabx (listed on ff123's page) are mostly nonfunctional, I wrote a perl script named abx. It should be on ff123's page along with the others now. Monty <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' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
> 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 supported are mp3,ogg,wma,wav). > Anyway, hopefully someone will find it useful. Cool. Is the layer 3 routine in bass.dll based on mpg123? I couldn't seem to dig out that information. Here is a description and layout of a tool which I think would be useful for group evaluation of various codecs: http://www.hydrogenaudio.org/forums/showthread.php?s=&threadid=633 I really like the fact that your tool embeds the decoding routines into the program. ff123 <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' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
James Chapman wrote: > Not sure about the MP3 decoder - you'd have to ask the author of > the bass library about that. I know there's a wide variation between > the different encoders, but is there any real difference (in terms of > sound quality) between the various decoders? There are various issues in mp3 decoders, including the ability to play VBR, offsets, bugs (like the infamous 100 Hz bug), and clipping off the end. Some mp3 decoders have been so badly implemented as to affect the sound quality. See David Robinson's excellent site: http://www.mp3decoders.org/ ff123 <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' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.