>
> 1) Leonid\'s fix
>
> Twinkling artifacts don\'t gone, but sound a little bit different.
>
> Some time ago I tried -Y option and it produced sometimes really bad
> twinkling. With Leonid\'s fix -Y option significantly reduces
> artifacts, but only when used with -X1.
>
> Resume: I think Leonid\'s fix is right and with -Y -X1 it produces
> nice results (sometimes I got better results than Fraunhoffer).
>
I finally got my sound card working and tried out main_theme.wav
tonight. I was also disapointed that Leonid's fix didn't remove
that artificial twinkling that pans from right to left. I haven't
tried any of the other options, but the -Y option (in some form or another)
should eventually help. It lets LAME try out different values
of the scalefactor multiplier.
>
> 2) ATH
>
> Without Leonid\'s fix and without -Y -X1 it produces audible
> artifacts. I tried to divide ATH and useful values was from 10 to 100
> (it was depending on type of music) - I know it seems too much (20 to
> 40 dB).
>
>
> 3) Decoders - I tried winamp2.5, MS Media Player and mpg123
> 0.59q. Each decoder sounded another way (and produces another kind
> of artifacts). Winamp is buggy/broken (I\'m sure about it, with
> joe sat. it produces artifacts in left channel regardless I tried
> to swap chanels in original wav and reencoded it - again artifacts
> in left channel). Best results I get with mpg123 but I can\'t
> listen under Linux (damned Li(v || f)e!).
>
Why doesn't mpg123 work under Linux? You could also try xmms - I think
it was originaly based on mpg123.
>
>
> When I played with ATH coefficients a bit, near all artifacts gone on
> first clip. But when I tried another song and tuned ATH, I broke first
> settings. Should ATM be variable/adaptive?
>
> I\'m sure with ATH we can outperform Fraunhoffer, but it needs _MUCH_
> tuning.
>
>
> My new top quality lame at 128kbps is:
>
> v3.27 with Leonid\'s patch, with ATH divided by 20, and with swiches -X1 -Y.
>
> Please try it with hard-to-encode samples at lower bitrates, because
> my test was limited to a few clips.
>
20 is not so bad: 10*log10(20)=13db, so it lowers the ATH normalization
by 13db. The uncertainty in if we should use max_energy or ave_energy
for the normalization is already +/- 5db. I will make this the default
in the next version.
>
> Bye, macik
>
> PS: I was surprised, but try to encode \"fatboy.wav\" using Lame and
> any mpeg1layer2 encoder - layer2 produces much better results at any
> bitrate. Is there serious bug in layer3?
>
probably :-)
Mark
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