ABSTRACT
So, for example, if fl = 700 Hz, f2 = 1,000 Hz, then 2fl - f2 = 2 x 700 - 1,000 = 400 Hz. Demonstration 33 (Track 66) uses these signals:
1. The wave formed from the superposition of pure tones of frequencies 700 and 1,000 is subjected to a symmetric distortion.
