Gating system for electrical musical instrument

• US 3,176,060 A
• Filed: 07/01/1960
• Issued: 03/30/1965
• Est. Priority Date: 07/01/1960
• Status: Expired due to Term

• Current Assignee: Alfred J. Bissonette, Munch J.R. Walter
• Original Assignee: Alfred J. Bissonette, Munch J.R. Walter
• Inventors: Bissonette, Alfred J., MUNCH JR WALTER
• Application Number:
  US04/040,232
• Time in Patent Office: 1,733 Days
• US Class Current: 84/680
• CPC Class Codes: G10H 1/057 by envelope-forming circuits
• CPC Class Codes: Y10S 84/23 Electronic gates for tones

Claims

9. A GATING CIRCUIT, COMPRISING A PLURALITY OF TONE SIGNAL SOURCES ENCOMPASSING AT LEAST TWO OCTAVES OF THE MUSICAL SCALE, A SEPARATE KEYING MEANS IN CASCADE WITH EACH OF SAID SOURCES, SAID KEYING MEANS HAVING INHERENT FEEDTHROUGH OF SAID TONES WHEN NON-CONDUCTIVE, A GATE CONNECTED WITH PLURAL KEYING MEANS, SAID LAST NAMED KEYING MEANS BEING CONNECTED ONLY TO HARMONICALLY RELATED TONE SIGNAL SOURCES, SAID GATES BEING NORMALLY NON-CONDUCTIVE AND BEING SUBJECT TO SUBSTANTIALLY ZERO INHERENT FEED THROUGH OF SAID TONES WHEN NON-CONDUCTIVE, AND MEANS RESPONSIVE TO CLOSURE OF ANY OF SAID KEYING MEANS FOR RENDERING THE GATE IN CASCADE THEREWITH CONDUCTIVE, WHEREBY SAID GATE WHEN CONDUCTIVE PASSES A TONE AND ONLY FEEDTHROUGH TONES WHICH ARE HARMONICALLY RELATED TO THAT TONE.