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Audigy 2: Input/ Output Quality, Continued

A Prima Donna on PC: Creative Labs Audigy 2
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The second test is of noise and interference levels, and measures in particular where the card's background noise is located and its sensitivity to interference from the computing environment: power supply, transformers and monitors.


Parameter Left Right
Dynamic range, dB: 87.2 85.9
Dynamic range (A-weighted), dB: 95.8 95.1
DC offset, %: 0 0

Related to the above test, the dynamic range test gauges the level of noise generated in the presence of a sound signal, in this instance, a sine wave (1 kHz at -60 dB) at card input.


Parameter Left Right
THD, %: 0.001 0.002
THD + Noise, %: 0.003 0.003
THD + Noise (A-weighted), %: 0.003 0.003


Parameter Left Right
IMD + Noise, %: 0.007 0.008
IMD + Noise (A-weighted), %: 0.005 0.006


Parameter L <- R L -> R
Crosstalk at 100 Hz, dB: -85 -86
Crosstalk at 1 kHz, dB: -86 -89
Crosstalk at 10 kHz, dB: -85 -87
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