Music – Accessories – Teaching devices
Patent
1974-12-09
1977-05-24
Jackmon, E. S.
Music
Accessories
Teaching devices
35 35C, 84459, 84464, 179 1M, 179 1VC, G09B 1502, G09B 1904, H04M 100
Patent
active
040247899
ABSTRACT:
An audible tone identifier comprises a transducer and amplifier for responding to audible tones, such as generated by a human voice speaking or singing, or a musical instrument, and a plurality of filters sharply tuned to the notes of one or more octaves or fractions thereof of the equal tempered chromatic musical scale or to other patterns of sounds that are to be individually identified. The outputs of the filters are connected to lamp driver circuits which in turn are connected through transposing plug-and-jack connectors and sharp-and-flat insertion switches to lamps on a display board, whereby any musical tone within the range of the device, received by the transducer, will be identified visually on the display board by the lighting of a lamp. The tone identifier may be a component of a teaching or speech therapy system including a source of recorded instructions and sounds to be produced by a trainee, such as a tape player and pre-recorded tape, and headphones through which the trainee hears instructions as well as the sounds produced by him.
REFERENCES:
patent: 2487244 (1949-11-01), Horvitch
patent: 2779920 (1957-01-01), Petroff
patent: 3180201 (1965-04-01), Low, Jr. et al.
patent: 3377716 (1968-04-01), Schmoyer
patent: 3429217 (1969-02-01), Lawrence
Humphrey John H.
Humphrey Thomas D.
Jackmon E. S.
Murli Advani
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