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Automatic harmonic interval keying in an electronic musical instrument

  • US 4,205,576 A
  • Filed: 10/12/1978
  • Issued: 06/03/1980
  • Est. Priority Date: 10/12/1978
  • Status: Expired due to Term
First Claim
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1. Automatic harmony note generating means in a digital keyboard operated electronic instrument in which polyphonic tones are generated in response to musical pitch information stored in a tone generator assignment memory, comprising:

  • first means responsive to the depression of a selected key on the keyboard for generating electrically coded signals identifying the musical pitch of the melody note corresponding to the selected key, second means responsive to the depression of the same selected key for generating electrically coded signals identifying a harmony note that is a predetermined number of half tones in pitch from said melody note corresponding to the selected key, said second means including settable means for selectively generating a coded key signature signal identifying any selected key of the musical scale and means responsive to the key signature coded signal for adjusting said predetermined number of half tones difference between the musical pitch of said melody note and said harmony note, and means storing the coded signals from both said first and second means in the assignment memory.

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