Acoustic residue algebra decoder

Details Acoustic residue algebra decoder Acoustic residue algebra decoder

1974-12-09

1976-11-02

Sloyan, Thomas J.

Communications: electrical

Audible indication

Percussion-type sound producer

235154, H03K 1300

Patent

active

039900720

ABSTRACT:
An acoustic residue algebra decoder having a plurality of acoustic channels with each channel having an input transducer and an output transducer. The number of acoustic channels is equal to the number of residue bases used in the decoder. An electrical signal is supplied to each input transducer of each acoustic channel with the frequency of the signal supplied being inversely proportional to the residue base of that acoustic channel. The spacing of the conductors of the input and output transducers of each acoustic channel are proportional to the residue base of that acoustic channel. Circuitry is provided in conjunction with the acoustic channels to provide a phase shift of each of the input signals with the degree of phase shifting being determined by the residue and the residue base. Additional circuitry is provided to determine the elapsed time between application of the input signals to the input transducers and the simultaneous generation of maximum signals from all the output transducers with this elapsed time being used to determine the coded number.

REFERENCES:
patent: 2945984 (1960-07-01), Yando
patent: 3134099 (1964-05-01), Woo
patent: 3202868 (1965-08-01), Blank
patent: 3446975 (1969-05-01), Adler et al.
patent: 3653031 (1972-03-01), Hlady et al.
patent: 3701147 (1972-10-01), Whitehouse
patent: 3824586 (1974-07-01), Quate

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