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From: Zia Mazhar @2:292/862
To: Sergey Sapelin @2:5020/1844.33
Subj.: Re: [MP3 ENCODER] test sample
Dated: 17 Aug 00 13:23:45
[processed here: 26 Aug 00 15:29:16]
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From: Zia Mazhar <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Reply-To: [EMAIL PROTECTED]
Symbals are probably the instrument that is most difficult to encode correctly!
Pierre Hugonnet wrote:
> Hello,
>
> I have a interesting (I think) test sample (.wav ~1.6MB), which consists
mainly of cymbal hits, with some drums and bass. The problem here is the the
cymbal hits. Small reports using lame 3.70 (the last stable release) and 3.85b
(last beta?) is below. However: the CBR result was better (though not very at
128kbs) in 3.70; VBR performs better than ABR and CBR with 3.85b.
>
> in 3.85b I'm a little bit worried by the VBR quality setting, which produce
fully different behavior (average bitrate) than in 3.70.
>
> If somebody is interested in getting the .wav for more testing, just tell me
where to upload it.
>
> Pierre
>
> -------------------------------------------------------------------
>
> lame 3.70
> CBR 96 horrible/artefacts
> CBR 128 acceptable/slight artefacts
> VBR 6 (107kbs) poor/artefacts
> VBR 5 (123kbs) poor
> VBR 4 (163kbs) correct
>
> lame 3.85b (--lowpass 15 for all VBRs)
> CBR 96 horrible/artefacts
> CBR 128 acceptable/artefacts
> CBR 192 good
> VBR 9 (119kbs) acceptable/slight artefacts
> VBR 8 (125kbs) acceptable
> VBR 7 (131 kbs) correct
> VBR 6 (136 kbs) correct
> VBRnew 9 (147kbs) good
> ABR 128 (134kbs) acceptable/sligth artefacts
>
> Conclusion:
> great improvement of VBR_rh from 3.70 to 3.85b
> ABR slightly better than CBR
> VBR slightly better than ABR and CBR
> VBR_mt and VBR_rh quality similar ?
> CBR 128 better with 3.70
> default low pass two low in VBR modes
> need -V > 10 in VBR !!
> --
> MP3 ENCODER mailing list ( http://geek.rcc.se/mp3encoder/ )
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@Via ifmail 2:292/862@fidonet, Thu Aug 17 2000 at 18:31 (2.14-tx8.10)
@Via D'Bridge 1.58 2:292/854 08/26 14:26
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