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16 44.1的
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% P3 l$ M+ G4 f) ERightMark Audio Analyzer test report
% J' `* _2 R O+ V, K| Testing device | 扬声器 (2- Creative SB X-Fi) | | Sampling mode | 16-bit, 44 kHz | | Interface | MME | | Testing chain | External loopback (line-out - line-in) | | RMAA Version | 6.2.3 | | | | | | 20 Hz - 20 kHz filter | ON | | Normalize amplitude | ON | | Level change | 4.3 dB / 4.3 dB | | Mono mode | OFF | | Calibration singal, Hz | 1000 | | Polarity | correct/correct |
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Summary5 l0 Y! T- `6 M# `1 [
| Frequency response (from 40 Hz to 15 kHz), dB | +0.24, -0.17 | Good | | Noise level, dB (A) | -97.1 | Excellent | | Dynamic range, dB (A) | 96.9 | Excellent | | THD, % | 12.966 | Very poor | | THD + Noise, dB (A) | -15.2 | Very poor | | IMD + Noise, % | 10.884 | Very poor | | Stereo crosstalk, dB | -97.9 | Excellent | | IMD at 10 kHz, % | 12.842 | Very poor | | General performance |
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% ~1 i2 _( n$ {Frequency response
; [* f1 X) L' G! c" w[img=504,315]file:///C:/Users/Nikkos/Desktop/[MME]%20扬声器%20(2-%20Creative%20SB%20X-Fi)/fr.png[/img] % z! u! K4 R3 V
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| From 20 Hz to 20 kHz, dB | -11.87, +0.24 | | From 40 Hz to 15 kHz, dB | -0.17, +0.24 | \0 f: x; x Y& w
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- Z) T/ ~+ O; M Q0 XNoise level
v! S `% b: o6 `# j/ P[img=504,315]file:///C:/Users/Nikkos/Desktop/[MME]%20扬声器%20(2-%20Creative%20SB%20X-Fi)/noise.png[/img] " \; R6 z6 \# l; f s8 |
3 H. O' S/ }: G9 r | Left | Right | | RMS power, dB | -96.3 | -96.3 | | RMS power (A-weighted), dB | -97.1 | -97.0 | | Peak level, dB FS | -84.2 | -82.2 | | DC offset, % | -0.0 | -0.0 |
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Dynamic range
2 K+ Z8 U- c3 G* z/ H- y8 V[img=504,315]file:///C:/Users/Nikkos/Desktop/[MME]%20扬声器%20(2-%20Creative%20SB%20X-Fi)/dynamics.png[/img]
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| Left | Right | | Dynamic range, dB | +96.2 | +96.2 | | Dynamic range (A-weighted), dB | +96.8 | +96.9 | | DC offset, % | -0.00 | -0.00 | 3 J+ D4 t9 I$ n% B' f+ b! t
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' ^* g- p% `* F( g5 u: C) V+ gTHD + Noise (at -3 dB FS)+ N6 z0 j) p& E9 ]5 P
[img=504,315]file:///C:/Users/Nikkos/Desktop/[MME]%20扬声器%20(2-%20Creative%20SB%20X-Fi)/thd.png[/img] . e# F8 A# y0 ?
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| Left | Right | | THD, % | +12.9661 | +12.9661 | | THD + Noise, % | +12.9690 | +12.9690 | | THD + Noise (A-weighted), % | +17.2911 | +17.2911 |
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Intermodulation distortion6 f* I2 g% y: w, b* x
[img=504,315]file:///C:/Users/Nikkos/Desktop/[MME]%20扬声器%20(2-%20Creative%20SB%20X-Fi)/imd.png[/img] . w/ K5 T+ i4 {( m
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| Left | Right | | IMD + Noise, % | +10.8841 | +10.8842 | | IMD + Noise (A-weighted), % | +9.1697 | +9.1698 | ! \' Z j; o; V3 A2 F& h
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Stereo crosstalk
& E( b+ a$ c! A0 u[img=504,315]file:///C:/Users/Nikkos/Desktop/[MME]%20扬声器%20(2-%20Creative%20SB%20X-Fi)/cross.png[/img] " A# W* D+ T, S* `: I3 l9 A& m
# L+ s/ P; S f& w& Z4 ^$ D | Left | Right | | Crosstalk at 100 Hz, dB | -99 | -101 | | Crosstalk at 1000 Hz, dB | -97 | -97 | | Crosstalk at 10000 Hz, dB | -94 | -94 |
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+ |" ?; d P+ X4 a3 ^) wIMD (swept tones)
- ?6 R0 H2 X1 c[img=504,315]file:///C:/Users/Nikkos/Desktop/[MME]%20扬声器%20(2-%20Creative%20SB%20X-Fi)/imdswept.png[/img] . ]2 N% L* x, C8 t* b, y
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| Left | Right | | IMD + Noise at 5000 Hz, | 13.4253 | 13.4255 | | IMD + Noise at 10000 Hz, | 12.4938 | 12.4951 | | IMD + Noise at 15000 Hz, | 12.6057 | 12.6058 |
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