Musical note detecting apparatus

Details Musical note detecting apparatus Musical note detecting apparatus

1975-08-28

1977-03-29

Witkowski, Stanley J.

Music

Instruments

84 121, 84453, 330126, G10G 100

Patent

active

040142370

ABSTRACT:
Apparatus for automatically detecting the pitch of individual notes of music represented in analog form by an electrical signal. The apparatus includes an arrangement of band-pass filters, connected in parallel, for receiving the electrical signal and passing selected portions thereof which contain the frequencies of the well-tempered scale. According to the invention, means are provided for varying the sensitivity of the pitch detecting apparatus in dependence upon the loudness of the notes to be detected to thereby inhibit the detection of harmonics.

REFERENCES:
patent: 2072708 (1937-03-01), Case
patent: 2340364 (1944-02-01), Bedford
patent: 2558868 (1951-07-01), McCarty
patent: 2606971 (1952-08-01), Scott
patent: 2606972 (1952-08-01), Scott
patent: 2606973 (1952-08-01), Scott
patent: 2949579 (1960-08-01), Wu
patent: 3539701 (1970-11-01), Milde

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