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本帖最后由 dongbei 于 2009-4-5 17:14 编辑
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h* ^ l; k4 k6 I请看安装了老驱动后的RMAA测试情况1 ]# p4 e' ?5 X! z1 h" n
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Testing device Sound Blaster X-Fi Xtreme Audio
4 @( y$ F7 z" [' K1 B$ y1 TSampling mode 16-bit, 44 kHz 2 S; M* j k; s) J0 a
Interface MME
0 [4 d" n$ Z3 UTesting chain External loopback (line-out - line-in) * }% o: D' O! |* |" Z5 m( P, W" i9 W+ w
RMAA Version 6.2.1 6 Q L2 V, y: V2 a4 D# @
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) B9 Y5 |9 I- h3 p20 Hz - 20 kHz filter ON 4 T) w$ |& u9 o! j$ h3 Q0 B
Normalize amplitude OFF
4 m! F& `0 y2 N" ?Level change -2.0 dB / -1.9 dB
* B$ x- [( U: O4 n4 p2 M" `Mono mode OFF 1 @# u: v9 Q/ D) ~ u5 a/ ?& f1 q/ e
Calibration singal, Hz 1000 ) K$ V' P4 S/ @) l O% f& `
Polarity inverted/inverted 6 Z/ V1 G3 ~( g& L
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! r9 u" R' V" lSummary" ?$ i' T( e. D" \3 v0 b1 E/ M
Frequency response (from 40 Hz to 15 kHz), dB +0.68, -1.45 Average
% r1 P& x$ k" zNoise level, dB (A) -106.0 Excellent 2 s" u& ?. r6 T
Dynamic range, dB (A) 93.7 Very good 2 y2 r$ A, R3 T; F3 K
THD, % 0.0033 Very good
" u( l" K4 B- |9 G: r: ^6 GTHD + Noise, dB (A) -84.6 Good
4 R$ r" i" _9 J6 NIMD + Noise, % 0.0070 Excellent 太好了( w; E( E6 }% R, |
Stereo crosstalk, dB -72.6 Good
- A h% D$ |, f, s, P: aIMD at 10 kHz, % 0.0089 Very good 非常好" P8 N* E0 q- n- w: _4 P+ K+ ^
General performance Very good
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% K; t) S3 J/ u8 D( T: ZIMD 在10KHZ的位置 一个在天,一个在地,差别如此悬殊,问题在哪里?; Y9 S! b. t. m
我不懂,我只是偶然发现了这个问题。[img][/img] |
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