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Electronic piano circuit

  • US 3,935,783 A
  • Filed: 07/08/1974
  • Issued: 02/03/1976
  • Est. Priority Date: 07/08/1974
  • Status: Expired due to Term
First Claim
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1. An electronic musical instrument of the keyboard type comprising:

  • electronic means for audibly producing a square wave fundamental frequency and at least one square wave harmonic frequency thereof in response to the actuation of a key on a keyboard, said electronic means including gate circuit means for providing amplitude control of said square wave fundamental and harmonic frequencies, and means responsive to said amplitude control of said electronic means for adding together said fundamental and harmonic frequencies at predetermined points in time along the zero, attack, peak, and decay of a characteristic piano voice curve.

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