Tried with castanet2.wav file :
255 kbps (mesured), high quality
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1L File: G:\Temp\casta2\castanets2.wv.wav
1L Rating: 3.4
1L Comment:
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ABX Results:
Original vs G:\Temp\casta2\castanets2.wv.wav
14 out of 16, pval = 0.002
321 kbps (mesured), high quality - focused on beginning of the track
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1R File: G:\Temp\casta2\castanets2_355.wv.wav
1R Rating: 4.2
1R Comment:
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ABX Results:
Original vs G:\Temp\casta2\castanets2_355.wv.wav
8 out of 16, pval = 0.598
THE SAME, 321 kbps (mesured), high quality - focused on the middle of the sample [intermediate attacks]
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1R File: G:\Temp\casta2\castanets2_355.wv.wav
1R Rating: 4.2
1R Comment:
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ABX Results:
Original vs G:\Temp\casta2\castanets2_355.wv.wav
21 out of 30, pval = 0.021
(10/16 on the middle of the test, but I put up to 30, because of a really bad beginning)
First test was easy : pre-echo on the first and strong attack.
Second was more problematic : I'm not sure of what I heard. Sometimes pre-echo, sometimes different tonality (or is it added noise ?).
In the two cases, result is really good. Artifacts with wavepack lossy seems to be in general completely different from others perceptual codecs : noise, and on very rare cases, pre-echo. I can't perceive anything else wrong. At least, for the moment...