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本帖最后由 dongbei 于 2009-4-5 17:14 编辑
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7 V# r. g! K7 l& O( k; P请看安装了老驱动后的RMAA测试情况) Y2 K( ~/ C+ W% Y) _; Z; G7 `! x5 n
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Testing device Sound Blaster X-Fi Xtreme Audio
% j6 z+ \# g, z/ d% ~+ YSampling mode 16-bit, 44 kHz 3 {3 @" C$ `3 y) Y7 P' q+ g$ f5 n
Interface MME
+ V3 p; V" X0 R) u+ nTesting chain External loopback (line-out - line-in)
- T$ f r- ]; T7 Q5 L7 } u% KRMAA Version 6.2.1 3 m1 z1 p& a$ V! u4 v2 E2 g& m' i
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20 Hz - 20 kHz filter ON , s4 z6 g2 R) O* L
Normalize amplitude OFF
" [6 S) P6 I3 W" zLevel change -2.0 dB / -1.9 dB ) C% t! y% y4 K
Mono mode OFF
+ X( H- c Q4 {. ]% XCalibration singal, Hz 1000 ) h" f, u w7 \! }- G% ?
Polarity inverted/inverted
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Summary
( A4 y3 j: W: E( rFrequency response (from 40 Hz to 15 kHz), dB +0.68, -1.45 Average
1 v# S8 F9 l/ E; tNoise level, dB (A) -106.0 Excellent
1 k4 Y# k- F- T" ]Dynamic range, dB (A) 93.7 Very good
) i6 ~7 Z3 i* y, R+ CTHD, % 0.0033 Very good 6 O, f& R- J6 f/ _
THD + Noise, dB (A) -84.6 Good
7 E6 E2 x: y& P. H0 y; FIMD + Noise, % 0.0070 Excellent 太好了
3 x' j% b; q- L: eStereo crosstalk, dB -72.6 Good
: ?7 `& o3 u3 i& tIMD at 10 kHz, % 0.0089 Very good 非常好
/ z/ e. d& n" C: z) @& |General performance Very good
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4 Z1 e* ^2 `' g! W* c* ]' @IMD 在10KHZ的位置 一个在天,一个在地,差别如此悬殊,问题在哪里?
+ R' w9 q* _/ |我不懂,我只是偶然发现了这个问题。[img][/img] |
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