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Enhanced AAC+, how to compare quality between original file and decode
happysaisai
post Sep 19 2012, 16:33
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Hello,I'm doing with Enhanced aac+ codec, i met a problem ,is there someone knows which tool can be used to calculate the quality between original .wav file and the decoder output .wav file ?
I tried PEAQ, but the ODG value seems very low even though i did not add any error to the stream file.3gp.
Because the decoder output file is delayed, and the length between two files is different, so i shift the decoder output file and made the two files have same length, but still doesn't work, does someone know how to modify PEAQ or the two files?
Thanks.
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greynol
post Sep 20 2012, 14:21
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If you are only comparing one lossy encoding against the original lossless source then you should use ABX instead of ABC/HR, though the later can be used like ABX but you have to conduct multiple trials in order to get any statistical significance.


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happysaisai
post Sep 20 2012, 14:39
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QUOTE (greynol @ Sep 20 2012, 15:21) *
If you are only comparing one lossy encoding against the original lossless source then you should use ABX instead of ABC/HR, though the later can be used like ABX but you have to conduct multiple trials in order to get any statistical significance.

thanks, but I can't download the ABX from the link ,do you have other way to download ?
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