Specifications

Prism Media Products Limited AD-2 Dual-rate A/D converter
Operation Manual
Issue 0.2 © Prism Media Products Limited
11 August 1998 Page 54 of 58
Figure 23: D-D SRC mode THD+n, 96kHz-to-44.1kHz, 1kHz sine @ 0dBFS
8.3. SRC (Sample-rate converter)
Figure 21 shows a THD+n plot of the AD-2 in D-D mode, sample-rate-converting a 24-
bit, 96kHz-sampled 1kHz full-scale sinewave to 44.1kHz sampling rate.
The largest spurious component in the test above is -157.63dBFS. This figure
represents a huge improvement over competitive asynchronous rate converters, whose
imprecise conversions produce large and obtrusive aharmonic distortion components;
these distortions have given sample-rate-converters their characteristic 'sound' in the
past.