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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
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! O/ j; K# P1 L" g' v# H! eTesting device Sound Blaster X-Fi Xtreme Audio
) F2 d2 b- }/ J. Z2 s( ^Sampling mode 16-bit, 44 kHz / L$ P- j" g3 J, A* q
Interface MME % Y6 I% p* i% H2 Z( z% h
Testing chain External loopback (line-out - line-in) ! g( M9 I: _4 q& A: w5 B" L
RMAA Version 6.2.1 p( v# b* t; Z: [9 X! J8 p# ]
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20 Hz - 20 kHz filter ON 6 I7 k7 ~* |8 |& Q6 c5 ~& x
Normalize amplitude OFF
, G" }- e2 y- WLevel change -2.0 dB / -1.9 dB
6 o- r8 |6 `4 z3 y% E0 K4 cMono mode OFF : z: a0 o1 L V% V! j! X4 X
Calibration singal, Hz 1000 # T! }: j" {4 r w0 R5 @
Polarity inverted/inverted
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Summary; `& W/ {4 c$ ?0 [
Frequency response (from 40 Hz to 15 kHz), dB +0.68, -1.45 Average 2 l( m5 D8 P! Y% [6 h
Noise level, dB (A) -106.0 Excellent
( P' k0 o+ {* W9 ]( \7 W$ wDynamic range, dB (A) 93.7 Very good ! i* X" b( T6 i u- ?1 k7 H
THD, % 0.0033 Very good ( i0 t5 k8 Q+ x* b
THD + Noise, dB (A) -84.6 Good
, x i/ g- s. @6 Y ]: @* ~IMD + Noise, % 0.0070 Excellent 太好了
; J+ \% f% C8 s- M1 v' mStereo crosstalk, dB -72.6 Good
8 W/ `0 V) C( J4 B0 hIMD at 10 kHz, % 0.0089 Very good 非常好
4 z& ?: W8 j; \9 e% m G: O5 \# L6 uGeneral performance Very good 8 h3 V2 C; e2 H1 M# M
3 \/ e* @$ q# f2 f1 AIMD 在10KHZ的位置 一个在天,一个在地,差别如此悬殊,问题在哪里?
/ F4 O* a! a5 [5 x0 O! T# E我不懂,我只是偶然发现了这个问题。[img][/img] |
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