The Creation of Audible Sound from Ultrasonic Energy
Friday, October 3, 1997 4:00 p.m. Joe Norris American Technology Corp. San Diego, California http://www.atcsd.com This talk is a follow-up on the practical implementation of the parametric array in air. It will be shown that the original experiments of Hermann von Helmholtz, regarding the creation of difference frequencies-or Tartini tones-by sounding two tones loudly in…