ApplicationNo. 06/006048 filed on 01/24/1979
US Classes:340/384.71, Timing463/35Audible
ExaminersPrimary: Pitts, Harold I.
Attorney, Agent or Firm
International ClassesG10K 15/02 (20060101)
A63H 17/00 (20060101)
A63H 17/34 (20060101)
AbstractApparatus for producing a plurality of audio sound effects such as shots, explosions, and airplane and car sounds, used in electronic games utilizes a variable clock driving a variable digital noise generator whose audio output amplitude is shaped by either of two types of control units. In one type the density or duty cycle is varied by selectively ANDing together outputs from a polynomial counter. In a second embodiment a digital to analog converter utilizing gated resistive summing provides the amplitude control the gates being driven by a four bit data register which in turn is driven by the game control means.