Club CDFreaks - Knowledge is Power - View Single Post - Converting from ASF to OGG and some tunebite questions...

Jeff D · 12-01-2006

Thanks Sean.

The file size of some ~4:00 songs is in the 5.5-6MB range, so it looks like 192k.
I'll try the listening test, but that's not an easy thing to do at the moment...

The codec comparison was something I had checked in my research, that's where I came up with it looking like OGG was using a bit more bitspace at 128k encoding bitrate than WMA. OGG was almost always was rated better sounding than WMA.

Any idea on the relationship in general between WMA to OGG? Would a 160k OGG generally sound as good as a 192k WMA file? I'm pretty sure that a OGG in VBR at a rate of 160-224 would at least be as good as the source, or is that wasteful and would 128-192 be a better option? I know OGG is pretty good with working in smaller space and I think 192k or 224k is a high bitrate for OGG.

I understand compression/decompression and all the artifacting stuff, I've coded a few MP3 decoders so I understand the tech stuff on MP3 and audio compression. The stuff about encode, decode and reencoding I understand. That's the real reason for the questions as I don't want to bottleneck the bitstream on the second encode, but I don't want to waste bitspace either.

As to the tunebite digital copy, you'd really think it should be an easy thing to do, but it's not appearing that easy. I tried 4x and bumped that down to 2x after 4x having some popping and skipping issues. Turns out 2x worked great for a few songs, but others have failed big time. I figure if I need to recheck all the work after it's done I might as well do the 1x dub and just waste the time... I searched but didn't find too much talk about the high speed dub feature.

12-01-2006	#3 (permalink)
Jeff D CD Freaks Junior Member Join Date: Jul 2004 Posts: 58	Re: Converting from ASF to OGG and some tunebite questions... Thanks Sean. The file size of some ~4:00 songs is in the 5.5-6MB range, so it looks like 192k. I'll try the listening test, but that's not an easy thing to do at the moment... The codec comparison was something I had checked in my research, that's where I came up with it looking like OGG was using a bit more bitspace at 128k encoding bitrate than WMA. OGG was almost always was rated better sounding than WMA. Any idea on the relationship in general between WMA to OGG? Would a 160k OGG generally sound as good as a 192k WMA file? I'm pretty sure that a OGG in VBR at a rate of 160-224 would at least be as good as the source, or is that wasteful and would 128-192 be a better option? I know OGG is pretty good with working in smaller space and I think 192k or 224k is a high bitrate for OGG. I understand compression/decompression and all the artifacting stuff, I've coded a few MP3 decoders so I understand the tech stuff on MP3 and audio compression. The stuff about encode, decode and reencoding I understand. That's the real reason for the questions as I don't want to bottleneck the bitstream on the second encode, but I don't want to waste bitspace either. As to the tunebite digital copy, you'd really think it should be an easy thing to do, but it's not appearing that easy. I tried 4x and bumped that down to 2x after 4x having some popping and skipping issues. Turns out 2x worked great for a few songs, but others have failed big time. I figure if I need to recheck all the work after it's done I might as well do the 1x dub and just waste the time... I searched but didn't find too much talk about the high speed dub feature.