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本帖最后由 dongbei 于 2009-4-5 17:14 编辑
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请看安装了老驱动后的RMAA测试情况4 M7 J8 I# p" u( `$ l! l- j
. k2 g1 ^! x! a6 T- Q4 xTesting device Sound Blaster X-Fi Xtreme Audio
, B' F2 \, z0 USampling mode 16-bit, 44 kHz % Q: F. R+ i x0 d7 I, J0 @/ A+ v
Interface MME
5 {+ |* [% y& G; X2 U" s1 M3 ?( eTesting chain External loopback (line-out - line-in)
+ g4 n/ U& V/ Z! tRMAA Version 6.2.1 5 A( N* S( j# X2 H6 w6 r
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20 Hz - 20 kHz filter ON : o5 Y+ Q) |! ^' N$ s* n( Y0 S N
Normalize amplitude OFF ( U7 D! T3 ]$ |& y4 B4 ]
Level change -2.0 dB / -1.9 dB 7 g) w# k. N: k
Mono mode OFF 3 J. r# Q7 j+ ~9 F' N( }9 ?" ^
Calibration singal, Hz 1000 & [, p4 Y) B* Z6 M
Polarity inverted/inverted 0 k5 O! j1 a7 D6 ~- l3 X
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4 ~* B. L2 x- o: q0 V0 N3 oSummary* {% V _' y3 \* ~. d) d
Frequency response (from 40 Hz to 15 kHz), dB +0.68, -1.45 Average
/ R( x1 z# a5 Y7 [) Q1 Z* c( eNoise level, dB (A) -106.0 Excellent : T2 t9 ?7 t, a; K* t; Q- w3 `
Dynamic range, dB (A) 93.7 Very good
: J9 L% N; q9 j# wTHD, % 0.0033 Very good : ~, K! @7 }7 ?( i/ _4 u* f% W
THD + Noise, dB (A) -84.6 Good
, x/ E2 B- |7 k. [# K3 r; S! ~: xIMD + Noise, % 0.0070 Excellent 太好了
5 [. j' I5 b; Q* V- x+ z: F. CStereo crosstalk, dB -72.6 Good
6 w# s! D9 v$ O% HIMD at 10 kHz, % 0.0089 Very good 非常好
! u) R6 b* B4 f: r, z. OGeneral performance Very good
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' O! e5 v, H0 v" M& kIMD 在10KHZ的位置 一个在天,一个在地,差别如此悬殊,问题在哪里?6 {/ `, Q: y5 J
我不懂,我只是偶然发现了这个问题。[img][/img] |
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