Lame APS nukes MPC 5 on Amnesia.wav
Reply #54 – 2003-03-10 04:06:39
Here are my WinABX-results for some “problem-samples” encoded with mpcenc1.95z67 (default settings). ------------------------------------- WinABX v0.23 test report 03/10/2003 02:46:57 A file: H:\AUDIO TEST SAMPLES\mppenc1.95z67\angelic_silent_short.wav B file: H:\AUDIO TEST SAMPLES\mppenc1.95z67\angelic_silent_short.mpc.wav 02:48:12 0/1 p=100.0% etc… 03:04:59 41/64 p= 1.6% 03:05:04 test finished ------------------------------------- WinABX v0.23 test report 03/10/2003 03:06:12 A file: H:\AUDIO TEST SAMPLES\mppenc1.95z67\amnesia44khz.wav B file: H:\AUDIO TEST SAMPLES\mppenc1.95z67\amnesia44khz.mpc.wav 03:06:31 1/1 p=50.0% 03:06:45 2/2 p=25.0% 03:06:57 3/3 p=12.5% 03:07:16 4/4 p= 6.2% 03:08:13 5/5 p= 3.1% 03:08:34 6/6 p= 1.6% 03:09:22 6/7 p= 6.2% 03:09:49 7/8 p= 3.5% 03:09:55 test finished ------------------------------------- WinABX v0.23 test report 03/10/2003 03:09:57 A file: H:\AUDIO TEST SAMPLES\mppenc1.95z67nd_vent_clip.wav B file: H:\AUDIO TEST SAMPLES\mppenc1.95z67nd_vent_clip.mpc.wav 03:10:54 1/1 p=50.0% etc… 3:16:18 12/16 p= 3.8% 03:16:25 test finished ------------------------------------- WinABX v0.23 test report 03/10/2003 03:21:51 A file: H:\AUDIO TEST SAMPLES\mppenc1.95z67\Jump.wav B file: H:\AUDIO TEST SAMPLES\mppenc1.95z67\Jump.mpc.wav 03:23:06 0/1 p=100.0% etc… 03:32:01 15/21 p= 3.9% 03:32:05 test finished ------------------------------------- WinABX v0.23 test report 03/10/2003 03:36:54 A file: H:\AUDIO TEST SAMPLES\mppenc1.95z67\AE_BASSCADET.wav B file: H:\AUDIO TEST SAMPLES\mppenc1.95z67\AE_BASSCADET.mpc.wav 03:37:45 0/1 p=100.0% … 03:46:24 19/38 p=56.4% 03:46:26 test finished **** It should however be noted, although I could abx 4 out of 5 samples (not easy!), that the improvement in sound quality of the samples was impressive, compared to mppenc v1.14 and 1.15 encoded samples. I would rate them all higher than 4.6 on a scale of 5. There is however a serious problem with the blips-sample (Blips.flac) Watch this Encode log: __________ MPC Encoder 1.95z67 --Alpha-- © 1999-2002 Buschmann/Case/Klemm/Piecha encoding file 'H:\AUDIO TEST SAMPLES\mppenc1.95z67\blips.wav' to file 'H:\AUDIO TEST SAMPLES\mppenc1.95z67\blips.mpc' SV 15.15, Profile 'Standard' PCM fader : fade-in: 0.00 s, fade-out: 0.00 s, shape: 1 Scaling input by : left 1.00000, right: 1.00000 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 (2/6 dB) Threshold of Hearing : Model: min(Busch,Klemm) (5), Max ATH: 76 dB, Offset: +0 dB, +Offset@20kHz:0 dB Noise masks Tone Ratio : 6.5 dB Tone masks Noise Ratio : 18.0 dB Exploitation of temporal post masking Minimum Signal-to-Mask : 1.0 dB No deleting of input file after encoding %|avg.bitrate| speed|play time (proc/tot)| CPU time (proc/tot)| ETA 100.0 5981.6 kbps 4.21x 0:11.3 0:11.3 0:02.6 0:02.6 _______________ An average bitrate of nearly 6000kbps! But then there’s more…. Decode log: _____________ MPC Decoder 1.95z67 3DNow/SSE © 1999-2003 Buschmann/Klemm/Piecha/Wolf decoding of file 'H:\AUDIO TEST SAMPLES\mppenc1.95z67\blips.mpc.mpc' to file 'H:\AUDIO TEST SAMPLES\mppenc1.95z67\blips.mpc.wav' 5968.2 kbps, 0:11.36, SV 15.15, Profile Unstable/Experimental (--Alpha-- 1.9) 0:00.02/ 0:11.36 decoded ( 0.0%) mppdec: broken frame 66/435 (decoded size=3691, size in stream=3232) (runtime: 0.23 s speed: 7.45x) *** 1 decoded file has errors *** _____________ The encoded blips.mpc would not decode, and the decoding aborts with a broken-frame error. -tm