RightMark Audio Analyzer test report Testing device | SB X-Fi Audio [A000] | Sampling mode | 16-bit, 44 kHz | Interface | MME | Testing chain | External loopback (line-out - line-in) | RMAA Version | 6.0.4 | | | | | 20 Hz - 20 kHz filter | ON | Normalize amplitude | ON | Mono mode | OFF | Calibration singal, Hz | 1000 | Polarity | correct/correct |
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Summary Frequency response (from 40 Hz to 15 kHz), dB | +0.01, -0.07 | Excellent | Noise level, dB (A) | -95.4 | Excellent | Dynamic range, dB (A) | 95.5 | Excellent | THD, % | 0.0023 | Excellent | THD + Noise, dB (A) | -86.8 | Good | IMD + Noise, % | 0.0060 | Excellent | Stereo crosstalk, dB | -96.0 | Excellent | IMD at 10 kHz, % | 0.011 | Very good | General performance |
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; H+ h* Z+ x, J- [) {Frequency response
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4 l: X, `! V+ V" ]; U1 l4 h$ T' m$ ^ From 20 Hz to 20 kHz, dB | -0.28, +0.01 | From 40 Hz to 15 kHz, dB | -0.07, +0.01 |
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Noise level
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| Left | Right | RMS power, dB | -94.1 | -94.0 | RMS power (A-weighted), dB | -95.5 | -95.3 | Peak level, dB FS | -82.4 | -82.4 | DC offset, % | -0.0 | -0.0 |
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Dynamic range
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( A: a* z0 ~# n& p a: m | Left | Right | Dynamic range, dB | +94.1 | +94.0 | Dynamic range (A-weighted), dB | +95.5 | +95.4 | DC offset, % | -0.00 | -0.00 |
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+ [6 P! h: N. ]THD + Noise (at -3 dB FS)
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| Left | Right | THD, % | +0.0023 | +0.0023 | THD + Noise, % | +0.0047 | +0.0047 | THD + Noise (A-weighted), % | +0.0046 | +0.0046 |
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# @- m6 l) i2 \ ]3 c. v5 I$ QIntermodulation distortion
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| Left | Right | IMD + Noise, % | +0.0060 | +0.0060 | IMD + Noise (A-weighted), % | +0.0053 | +0.0052 |
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Stereo crosstalk
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| Left | Right | Crosstalk at 100 Hz, dB | -97 | -93 | Crosstalk at 1000 Hz, dB | -96 | -94 | Crosstalk at 10000 Hz, dB | -79 | -83 |
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3 ]* E( m4 }4 ]/ n' }IMD (swept tones)
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| Left | Right | IMD + Noise at 5000 Hz, | 0.0110 | 0.0105 | IMD + Noise at 10000 Hz, | 0.0096 | 0.0090 | IMD + Noise at 15000 Hz, | 0.0130 | 0.0120 |
) C: |% F+ s% S0 g对比一下我的X-FI成绩吧……频响差距那么大肯定不对头的 ) c& d! @- i1 }3 u
) L e) ]- o6 P; S; ]2 L' Z8 }. V8 Q[ 本帖最后由 jjx01 于 2008-3-11 11:13 编辑 ] |