Hello Mark,
MT> Naoki's latest work makes a significant improvement to the psycho
MT> acoustics, so you might want to try it with --nspsytune.
MT> (scalefac_scale can still be enabled with -q1). Some of the stuff in
MT> --nspsytune will make it into the default settings soon.
MT> Mark
[ALL using 3.86beta]
I decided to tests these new psymodel-enhancements.
I compare VBR files of equal size using the normal psy-model VS
--nspsytune.
In order to get the (much) higher --nspsytune filesizes down, I used
"--athlower -21" (or -20->-23) to compensate. [seems to go negative
:)]
Seems logical to me to compare quality of vbr files only if they have
some comparable size.
I compared the normal psymodels VS:
lame -V1 -q1 -mj -h --nspsytune --athlower -21
lame -v -q1 -mj -h --nspsytune --athlower -21
lame -V9 -q1 -mj -h --nspsytune --athlower -21
for 4 files. [making 16 files]
Then I double-checked my findings by using "-V4 --nspsytune" VS "-V1",
which gave about the same size, just to make sure the negative
--athlower's triggered no bugs.
finding: "--nspsytune" sounds _a lot_ worse than the normal psymodel.
The graphs show a lower overall distortion amplitude, but there is
this noise that I can even clearly hear upto V1 (didn't test V0).
Also, I find most "-V9 -q1" encodings using the normal psy-model enjoyable
and somewhat accurate. The --nspsytune flaws really surface using
"-V9 -q1 --nspsytune --athlower -21".
I think there is something wrong with "--nspsytune" and Joint Stereo. I
tried some stereo VBR files, and these sound a lot better already(,
being only 1kbit/s larger)
btw: I'm not being conservative or anti-"everything but vbr-old+psy",
and would rather have been here to report that --nspsytune sounds a
lot better than the old one.
--
Best regards,
Roel mailto:[EMAIL PROTECTED]
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