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What is the absolute *BEST* 192K CBR LAME setting?
Dr. TaaDow
post Feb 13 2003, 20:02
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ok... i know all about the --alt-presets, but i see people talking about all these different switches and stuff... so what is the *best* setting for 192k cbr?

all opinions welcome

thanks
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JohnV
post Feb 14 2003, 15:55
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QUOTE (Shadow RD @ Feb 14 2003 - 12:54 PM)
Now I want to know WHY the lowpass in --alt-preset cbr 192 is set to 19.5, when in --alt-preset standard, which is allowed 320 kbps frames, the lowpass is only set to 19. Seems strange to me... I'd go for a lower lowpass for --alt-preset cbr 192, probably below 18.

19.5 for cbr-192 is a bit high also in my opinion. I'd go for 18-19.

QUOTE
More questions regarding  --alt-preset cbr 192:

- Should scaling really be put into the presets?
- what EXACTLY does the combo --nspsytune --nsmsfix 1.7 --ns-bass -2 achieve in terms of sound quality improvement?
I think for educated users, who can use certain tools, the scaling is not necessary, but for majority of people I think it's good for basic clipping reduction.

--nspsytune uses psyco-acoustic model with tunings originally by Naoki Shibata (which is used by all --alt-presets).
--nsmsfix adjusts masking of the mid/side frames and that way also affects ms/lr switching. (Works only with nspsytune)
--ns-bass -2 gives a bit more resolution for the low frequencies. (Works only with nspsytune)

With lame 3.94alpha 11 and further, some things will probably be adjusted for better quality for cbr-192:
--shortthreshold 3.5,15 or 4.5,15 or somewhere near.
-X 1,3 or 2,3 or 3,3 (anybody tested 2,3 or 3,3 with this? 1,3 should be safe, but 2,3 or 3,3 will probably give different, either worse or better quality than 1,3)
-Z1 (noise shaping type 1. I personally don't trust type 2 much at all.)
--lowpass (maybe 18 which gives transition band of 17960 Hz - 18494 Hz. This transition band is given by lowpass values between 17.8-18.4)
--nsmsfix (ideal value should be searched)


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Juha Laaksonheimo
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Posts in this topic
- Dr. TaaDow   What is the absolute *BEST* 192K CBR LAME setting?   Feb 13 2003, 20:02
- - dreamliner77   --alt-preset cbr 192 or --alt-preset cbr 192 -Y   Feb 13 2003, 20:05
- - SometimesWarrior   QUOTE (dreamliner77 @ Feb 13 2003 - 11:05 AM)...   Feb 13 2003, 21:08
- - tigre   QUOTE (SometimesWarrior @ Feb 13 2003 - 12:08...   Feb 13 2003, 21:16
- - mithrandir   Depends on the LAME version. If you are using the...   Feb 13 2003, 22:56
- - Drover's Dog   Don't play with it. Just use --alt-preset cbr...   Feb 14 2003, 01:53
- - fewtch   QUOTE (Drover's Dog @ Feb 13 2003 - 05:53...   Feb 14 2003, 03:10
- - layer3maniac   QUOTE (fewtch @ Feb 13 2003 - 06:10 PM)Why us...   Feb 14 2003, 03:16
- - SometimesWarrior   QUOTE (tigre @ Feb 13 2003 - 12:16 PM)QUOTE (...   Feb 14 2003, 03:53
- - nailbomb   hello, anybody knows what commandline switches eq...   Feb 14 2003, 03:55
- - Secret Chief   QUOTE (SometimesWarrior @ Feb 13 2003 - 06:53...   Feb 14 2003, 04:25
- - grbmusic   QUOTE (Dr. TaaDow @ Feb 13 2003 - 04:02 PM)ok...   Feb 14 2003, 04:50
- - torok   QUOTE (nailbomb @ Feb 13 2003 - 06:55 PM)hell...   Feb 14 2003, 05:01
- - Secret Chief   QUOTE (nailbomb @ Feb 13 2003 - 06:55 PM)hell...   Feb 14 2003, 05:33
- - SometimesWarrior   QUOTE (Secret Chief @ Feb 13 2003 - 07:25 PM)...   Feb 14 2003, 09:47
- - JohnV   This has been said million times but here goes aga...   Feb 14 2003, 10:23
- - yq   QUOTE (Secret Chief @ Feb 14 2003 - 05:33 AM)...   Feb 14 2003, 10:32
- - Shadow RD   Ok, I know I can't use the quoting system but ...   Feb 14 2003, 11:54
- - JohnV   QUOTE (Shadow RD @ Feb 14 2003 - 12:54 PM)Now...   Feb 14 2003, 15:55
- - Dr. TaaDow   lol, thanks for all the quick replies... and i...   Feb 14 2003, 16:47
- - tigre   No. It wastes bits otherwhise used for encoding, a...   Feb 14 2003, 16:52
- - mithrandir   QUOTE (JohnV @ Feb 14 2003 - 09:55 AM)-X 1,3 ...   Feb 14 2003, 17:12
- - Drover's Dog   Interesting thread. Thanks Dr. TaaDow for asking ...   Feb 17 2003, 05:43
- - Athenium   just had post written up and hit reload accidently...   Feb 21 2003, 03:39
- - Volcano   QUOTE 1) Is q2 really better than q0? That seems l...   Feb 21 2003, 15:45
- - Dr. TaaDow   speed isn't important to me, i'm a very pa...   Mar 8 2003, 09:29


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