--scale x, how to determine the value of x? Options

[gwaihir]

I'm posting the encoding on 3 profiles. While, standard and extreme didn't put up any warning, insane did -

CODE

D:\Music\wav>mppenc.exe --verbose --standard --xlevel "05 - [A.R.Rehman] - Hor
ses.wav"
MPC Encoder  1.14  -Beta-   (C) 1999-2002 Buschmann/Klemm/Piecha

encoding file '05 - [A.R.Rehman] - Horses.wav'
      to file '05 - [A.R.Rehman] - Horses.mpc'

SV 7.0 + XLevel coding, Profile 'Standard'

Maximum encoded bandwidth: 20.0 kHz
Adaptive Noise Shaping   : max. 6th order
Clear Voice Detection    : Dual
Mid/Side Stereo          : Mid/Side Stereo when superior + enhanced (2/6 dB)
Threshold of Hearing     : Model 550: min(Klemm,Busch), Max ATH: 76 dB, Offset:
+0 dB, +Offset@20 kHz:  0 dB
Minimum Signal-to-Mask   :  1.0 dB

   %|avg.bitrate| speed|play time (proc/tot)| CPU time (proc/tot)| ETA
100.0  162.5 kbps 10.05x     2:25.6    2:25.6     0:14.5    0:14.5

CODE

D:\Music\wav>mppenc.exe --verbose --extreme --xlevel "05 - [A.R.Rehman] - Hors
es.wav"
MPC Encoder  1.14  -Beta-   (C) 1999-2002 Buschmann/Klemm/Piecha

mppenc: Output file '05 - [A.R.Rehman] - Horses.mpc' already exists, overwrite (
Y/n)?  YES

encoding file '05 - [A.R.Rehman] - Horses.wav'
      to file '05 - [A.R.Rehman] - Horses.mpc'

SV 7.0 + XLevel coding, Profile 'Xtreme'

Maximum encoded bandwidth: 22.0 kHz
Adaptive Noise Shaping   : max. 6th order
Clear Voice Detection    : Dual
Mid/Side Stereo          : Mid/Side Stereo when superior + enhanced (2.5/9 dB)
Threshold of Hearing     : Model 560: min(Klemm,Busch), Max ATH: 70 dB, Offset:
-6 dB, +Offset@20 kHz: -6 dB
Noise masks Tone Ratio   :  8.0 dB
Tone masks Noise Ratio   : 21.0 dB
Minimum Signal-to-Mask   :  2.0 dB

   %|avg.bitrate| speed|play time (proc/tot)| CPU time (proc/tot)| ETA
100.0  192.6 kbps  9.85x     2:25.6    2:25.6     0:14.7    0:14.7

CODE

D:\Music\wav>mppenc.exe --verbose --insane --xlevel "05 - [A.R.Rehman] - Horse
s.wav"
MPC Encoder  1.14  -Beta-   (C) 1999-2002 Buschmann/Klemm/Piecha

mppenc: Output file '05 - [A.R.Rehman] - Horses.mpc' already exists, overwrite (
Y/n)?  YES

encoding file '05 - [A.R.Rehman] - Horses.wav'
      to file '05 - [A.R.Rehman] - Horses.mpc'

SV 7.0 + XLevel coding, Profile 'Insane'

Maximum encoded bandwidth: 22.0 kHz
Adaptive Noise Shaping   : max. 6th order
Clear Voice Detection    : Dual
Mid/Side Stereo          : Mid/Side Stereo when superior + enhanced (3/12 dB)
Threshold of Hearing     : Model 570: min(Klemm,Busch), Max ATH: 64 dB, Offset:
-12 dB, +Offset@20 kHz:-12 dB
Noise masks Tone Ratio   :  9.5 dB
Tone masks Noise Ratio   : 24.0 dB
Minimum Signal-to-Mask   :  3.0 dB

   %|avg.bitrate| speed|play time (proc/tot)| CPU time (proc/tot)| ETA
100.0  220.0 kbps  9.79x     2:25.6    2:25.6     0:14.8    0:14.8

WARNING:
 There still occured 1 SCF clippings due to a restriction of StreamVersion 7.
 Use the '--scale' method to avoid additional distortions. Note that this
 file already has annoying distortions due to slovenly CD mastering.

What is SCF clipping? Why does it appear in insane profile? what should be the value of x? how is this value determined?

[shadowking]

http://www.hydrogenaudio.org/forums/index....hl=scf+clipping



I don't know why clipping is detected in Q7

[gwaihir]

OK guys ... The previous code display was taken off my cousin's computer. Here's the encode results in my computer. Note that I didn't use the rip from my cousin but ripped again in my system. I haven't cross checked for the CRC (I have asked him to send me the info - awaiting results . The key note is no warning in this case. If the SCF is due to mastering defect, then drives don't matter, isn't it? The ripper I used is Pioneer DVD-115ME/Compaq DVD-115 and my cousin's is a Samsung DVD drive- don't remember the model.

CODE

F:\RIPPED\Warriors of Heaven and Earth\WAV>mppenc --verbose --xlevel --insane "05 - [A.R.Rehman] - Horses.wav"
MPC Encoder  1.14  -Beta-   (C) 1999-2002 Buschmann/Klemm/Piecha

encoding file '05 - [A.R.Rehman] - Horses.wav'
      to file '05 - [A.R.Rehman] - Horses.mpc'

SV 7.0 + XLevel coding, Profile 'Insane'

Maximum encoded bandwidth: 22.0 kHz
Adaptive Noise Shaping   : max. 6th order
Clear Voice Detection    : Dual
Mid/Side Stereo          : Mid/Side Stereo when superior + enhanced (3/12 dB)
Threshold of Hearing     : Model 570: min(Klemm,Busch), Max ATH: 64 dB, Offset:
-12 dB, +Offset@20 kHz:-12 dB
Noise masks Tone Ratio   :  9.5 dB
Tone masks Noise Ratio   : 24.0 dB
Minimum Signal-to-Mask   :  3.0 dB

   %|avg.bitrate| speed|play time (proc/tot)| CPU time (proc/tot)| ETA
100.0  219.8 kbps  4.97x     2:25.6    2:25.6     0:29.3    0:29.3

edit : perhaps it is obvious - mine is a PIII @ 667Mhz while my cousin's system is a PIV @ 1.5GHz

This post has been edited by gwaihir: Mar 29 2004, 17:59