Creative Sound Blaster X7, Руководство по эксплуатации продукта, Страница: 18 / 23

RightMark Audio Analyzer
Test Report for Sound Blaster X7 (24-bit, 48 kHz)
Summary
Testing device Speakers (Sound Blaster X7)
Sampling mode 24-bit, 48 kHz
Interface MME
Testing chain External loopback (line-out - line-in)
RMAA Version 6.4.0 PRO
20 Hz - 20 kHz filter ON
Normalize amplitude ON
Level change -0.1 dB / -0.3 dB
Mono mode OFF
Calibration signal, Hz 1000
Polarity correct/correct
Frequency response (from 40 Hz to 15 kHz), dB +0.02, -0.11 Excellent
Noise level, dB (A) -118.8 Excellent
Dynamic range, dB (A) 118.6 Excellent
THD, % 0.0016 Excellent
THD + Noise, dB (A) -93.3 Very Good
IMD + Noise, % 0.0026 Excellent
Stereo crosstalk, dB -116.0 Excellent
IMD at 10 kHz, % 0.0019 Excellent
GENERAL PERFORMANCE EXCELLENT
Appendix
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S O U N D B L A S T E R X 7 P R O D U C T E X P E R I E N C E G U I D E S O U N D B L A S T E R X 7 P R O D U C T E X P E R I E N C E G U I D E
Frequency response
Dynamic range
Noise level
THD + Noise (at -3 dB FS)
Left Right
From 20 Hz to 20 kHz, dB -0.22, +0.02 -0.37, -0.13
From 40 Hz to 15 kHz, dB -0.11, +0.02 -0.26, -0.13
Left Right
RMS power, dB -116.7 -117.0
RMS power (A-weighted), dB -118.6 -119.1
Peak level, dB FS -87.6 -92.5
DC offset, % +0.0 +0.0
Left Right
Dynamic range, dB +116.4 +116.8
Dynamic range (A-weighted), dB +118.3 +118.9
DC offset, % +0.00 +0.00
Left Right
THD, % +0.0016 +0.0016
THD + Noise, % +0.0017 +0.0017
THD + Noise (A-weighted), % +0.0022 +0.0021