Music – Instruments
Patent
1979-07-30
1981-06-23
Witkowski, Stanley J.
Music
Instruments
84 109, 84 113, 84 116, 84 126, 84 127, 84DIG22, G10H 138, G10H 318, G10H 500
Patent
active
042743214
ABSTRACT:
A harmony authorization detector (HAD) synthesizer electronically generates single audible musical notes in harmony with single original aural notes of a melody as the melody is played on an instrument by a single player. Thus the HAD functions as, in effect, a second instrument electronically operational in harmony with a manually played lead instrument. The HAD synthesizer is particularly useful with guitars although not so limited. When a lead electronic guitar is used in a solo situation playing one original note at a time, the HAD synthesizer will, for each string on each position of the guitar and with the aid of a group of tone decoders, electronically detect the single fundamental note played by the guitarist and will authorize the emission of a preset, predetermined electronically generated synthesized single harmony note e.g. a third, fifth, seventh, etc. based on the fundamental of the single note played by the lead guitarist. The original electronic note played plus the synthesized electronic harmony note are amplified and led to a speaker system where they are transduced into aural notes. The HAD synthesizer covers at least about two octaves for each string of the guitar with which it is to be associated and will function harmonically true on ascending and descending scales. The synthesized harmony note sustains for about the same period of time, e.g. as a congruent envelope configuration of amplitude versus time, and is of approximately the same instrumental quality (timbre), as the original note. The HAD synthesizer has a control to enable the player to preselect the synthesized electronically generated harmony notes, whereby to permit the player to decide on the harmony which he desires for his electronic accompanist. The HAD synthesizer can produce harmony corresponding to a variety of instruments by controlling said envelope configuration and the harmonic content of said electronically generated single harmony note.
REFERENCES:
patent: 3591699 (1971-07-01), Cutler
patent: 3711618 (1973-01-01), Freeman
patent: 3911776 (1975-10-01), Beigel
patent: 3948138 (1976-04-01), Gunn et al.
patent: 4119005 (1978-10-01), Kondo et al.
patent: 4205576 (1980-06-01), Deutsch et al.
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