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Old 12-03-2006, 09:43 AM   #1
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Question sound comparison

Are there applications that I could use to compare two different sound samples to see how they differ?

I'd like to make a comparison of mp3s and ogg samples to the original sound to see how well they match each other (accuracy, quality, size).

I'd like to move my whole mp3 collection to ogg but I'm a sound freak and so I don't want to lose sound quality in the process, so I'd like to get the right ogg "encoding options".
Old 12-03-2006, 10:24 AM   #2
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Last time I checked I saw a ready comparison with all nice graphs and stuff on the web. Message was clear: with ogg one gets either more quality at the same size, or same quality with smaller size (eithe way you like). There are some mp3 variants however that might do the same or better, I don't know since I don't care (hey, in a blind test people don't really hear the difference, it's more like an opinion of choice).

But, both of those compress the data and thus the quality is worse than if the sound was not compressed. And every time you compress, data is lost. It means that if you compress original sound to mp3, you lose quality, and if you then again convert that mp3 to ogg (for example), you're basically first turning it into uncompressed (but quality does not get better, since the data is lost at the moment of compressing) and then re-compressing it, and you lose more data. So compressing the original sound to mp3 and then to ogg is worse quality than if the original sound is compressed straight to ogg. Your quality remains better if you either remove all mp3s and just convert the original sound straight to ogg (hey, you do have the originals, don't you? ) or if you just leave your mp3s as they are.

If you care about the quality that much, and don't have the originals, just the mp3 files, don't convert = re-compress them to ogg - you'll just lose quality.
Old 12-03-2006, 10:38 AM   #3
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OF COURSE I have the original recordings!!! :-)

OK... I had already though of the coding from mp3 to ogg problem... No problem with that.

And as you say:
it's a very subjective matter
Of course it is.. and it does depend on a lot of variables too: quality of sound card, quality of cabling, speakers and so on. That's why I'm asking for one application that could tell me how two different encodings differ so I know how to resample it.


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