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被上面那么一说……+ e! o) {9 a! p7 q+ s* z) ~& n
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同歌ape和flac，还原回wave，文件大小都是40,924,844字节，MD5不同- y6 W& z% _' A
（凤飞飞 - 追梦人.ape -> ape.wav、凤飞飞 - 追梦人.flac -> flac.wav ）
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& l6 B0 L1 t; @5 z8 p0 I6 k两份auCDtect 0.8慢检报告如下，哪个更好点？ 2元的两元店地摊级耳麦却听出了差别，?.?
, P. N0 L+ N9 ~* P- g（foobar2000 0.9.6.1 release + official APE components）3 j b9 j0 O6 x. j' Z8 g6 d8 f
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D:auCDtect-0.8>aucdtect -m0 -v ape.wav
! y1 R! l0 w4 ^1 RauCDtect: CD records authenticity detector, version 0.8.2$ @) S9 M9 J5 Q( v% w) S7 S" ~
Copyright (c) 2004 Oleg Berngardt. All rights reserved.6 y' N: ^" U/ L* c) o" Q# e
Copyright (c) 2004 Alexander Djourik. All rights reserved.
( R4 c3 ]9 U c# _------------------------------------------------------------
. |+ W! V) d# mProcessing file: [ape.wav]
+ m' u S$ Q; F; iDetected average hi-boundary frequency: 2.027745e+004 Hz" n! h; J- F# x% H
Detected average lo-boundary frequency: 1.371987e+004 Hz0 [. E( J- h! E T% Z; V
Detected average hi-cut frequency: 2.150088e+004 Hz$ G/ m# i x% a0 ]' Y
Detected average lo-cut frequency: 1.319299e+004 Hz# {# D! J$ f" z9 X: d( h' ~+ k( |! g* ]
Maximum probablis boundary frequency: 2.189100e+004 Hz
. B1 q( j$ v; k7 vCoefficient of nonlinearity of a phase: 4.493146e-0014 u( L. Q& H) A7 m) }
First order smothness: 3.350849e-001
6 L3 u& M/ w& z8 ]" @6 |Second order smothness: 7.332255e-001
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------------------------------------------------------------
7 o$ y [) ?& i8 e7 h5 `This track looks like CDDA with probability 100%
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D:auCDtect-0.8>aucdtect -m0 -v flac.wav
, t9 P9 G2 K* J: mauCDtect: CD records authenticity detector, version 0.8.2& \ v4 B6 i! m0 N4 a7 x
Copyright (c) 2004 Oleg Berngardt. All rights reserved.
Y1 Q+ w& ^2 y0 ?/ A: v' DCopyright (c) 2004 Alexander Djourik. All rights reserved.
% k' g2 Q+ @6 _5 _7 ~3 x/ P------------------------------------------------------------" c3 Z2 [3 m& a0 e
Processing file: [flac.wav]. d5 T9 L2 J" R
Detected average hi-boundary frequency: 2.027954e+004 Hz
* B* p2 L9 u9 YDetected average lo-boundary frequency: 1.341898e+004 Hz
7 U9 j+ j: Z2 ?& i& k) |* @; ~Detected average hi-cut frequency: 2.148974e+004 Hz ^$ F9 i; b- y: j: r: W' x
Detected average lo-cut frequency: 1.314688e+004 Hz; o- E* s4 E% H n5 L8 }7 A$ ~
Maximum probablis boundary frequency: 2.189100e+004 Hz8 J$ h: x6 I% [) A& e8 \
Coefficient of nonlinearity of a phase: 9.712716e-001
9 f) Y) F' ^: sFirst order smothness: 3.336029e-001) i+ Y5 r# w+ ]$ V% X$ u* U
Second order smothness: 7.294784e-001
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------------------------------------------------------------+ Y% q/ q( S: e$ r6 ?: r0 `
This track looks like CDDA with probability 100%# u: C! n' K- O
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IP卡
狗仔卡
发表于 2008-12-29 21:13
显身卡