SINAD is figure of merit typically for radio receivers or similar devices. It may also be used in other applications. SINAD compares the signal power, the noise power and distortion power of signals. The specification is usually used in an audio sense. i.e the quantity under consideration is the quality of the received audio. A report on SINAD, its definition and other related parameters is available in the Signal Processing Group Inc., website at http://www.signalpro.biz > engineer’s corner for interested parties.