ABSTRACT
This chapter explains how a triangular-PDF signal, rather than a sinewave, reduces average power dissipation, and the power drawn from the supply. The actual power dissipations can be calculated by two things; a plot of the instantaneous power dissipations against level, and a description of how much time the signal spends at each level. The latter is formally called the 'probability density function', or PDF, of the signal. If the probability that the instantaneous voltage is above, not at, a given level is plotted against that level, a cumulative distribution function, or CDF, results. This is important as it is easier to measure than the PDF. A digital processor offers the possibility of determining as many data points as people wants on one playing of the music specimen. In this case a very simple 56001 program sorts the audio samples into 65 amplitude bins.
