Pre-Production
WM8501
5. Signal-to-noise ratio (dB) - SNR is a measure of the difference in level between the full scale output and the output with no
signal applied. (No Auto-zero or Automute function is employed in achieving these results).
6. Dynamic range (dB) - DNR is a measure of the difference between the highest and lowest portions of a signal. Normally a
THD measurement at 60dB below full scale. The measured signal is then corrected by adding the 60dB to it. (e.g. THD @
-60dB= -32dB, DR= 92dB).
7. THD (dB) - THD is a ratio, of the rms values, of Distortion/Signal.
8. Stop band attenuation (dB) - Is the degree to which the frequency spectrum is attenuated (outside audio band).
9. Channel Separation (dB) - Also known as Cross-Talk. This is a measure of the amount one channel is isolated from the
other. Normally measured by sending a full scale signal down one channel and measuring the other.
PP Rev 3.1 May 2006
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