Hello Takehiro,
Sunday, May 21, 2000, 6:41:25 PM, you wrote:
TT> I wrote;
>>>I added a new scalefac_scale algorithm to CVS version of LAME,
>>>which enables with -Y option.
TT> Sorry, -Y option is used for Mark's new VBR routine....
TT> so I changed "new scalefactor_scale algorithm" from -Y to -Z option.
did you change much in that hearing treshold? I get many 32kbit frames
now ...
I don't know if it's valuable, but i ran some tests on the "-Z"
setting:
- The size dramaticly drops compared to 3.83 (but that was the meaning
I guess :))
- The speed also drops on my cpu, but I don't care too much
- The extra quality brought by the 16-22kHz VBR fix by MT is
still there.
Check out (3.70 VS 3.83 VS 3.84a-Z):
http://users.belgacom.net/gc247244/extra/takehiro-1.png
the stats about this:
3.80
32 - 0 - 0,0%
||||||||||||||||||||||||||| 128 - 17066 - 54,1%
|||||||||||||||| 160 - 10165 - 32,2%
||||||| 192 - 4252 - 13,5%
224 - 36 - 0,1%
256 - 4 - 0,0%
320 - 0 - 0,0%
Average bitrate: 147,1
3.83
32 - 0 - 0,0%
|||||||| 128 - 5043 - 16,0%
||||||||||||||||||||| 160 - 13349 - 42,3%
||||||||||||||||| 192 - 10424 - 33,1%
|||| 224 - 2683 - 8,5%
256 - 22 - 0,1%
320 - 2 - 0,0%
Average bitrate: 171,0
384a1 [Robert Hegemann tweaks]
32 - 0 - 0,0%
||||||||||| 128 - 6760 - 21,4%
||||||||||||||||||||||| 160 - 14270 - 45,3%
|||||||||||||| 192 - 9135 - 29,0%
|| 224 - 1346 - 4,3%
256 - 11 - 0,0%
320 - 1 - 0,0%
Average bitrate: 165,2
384a1 [RH + Takehiro "Z"]
Bitrate - Frames - Percentage
32 - 0 - 0,0%
||||||||||||||||||||| 128 - 13509 - 42,9%
||||||||||||||||||||||| 160 - 14593 - 46,3%
||||| 192 - 3375 - 10,7%
224 - 44 - 0,1%
256 - 2 - 0,0%
320 - 0 - 0,0%
Average bitrate: 149,8
Length: 13:43.48
Total frames: 31524
- imho, it's still a bit too agressive on my
http://users.belgacom.net/gc247244/kingdom.zip
track. ("Ki" from "kingdom" sounds too sharp and also the 3 long cymbals in
the end)
--
Best regards,
Roel mailto:[EMAIL PROTECTED]
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