Acoustic filter

Details Acoustic filter Acoustic filter

1956-10-24

1980-05-13

Blum, Theodore M.

Communications, electrical: acoustic wave systems and devices

Receiver circuitry

367149, H04R 144

Patent

active

042031656

ABSTRACT:
1. A hydroacoustic filter and detecting device of the character described mprising an electrolytic detector cell having an acoustical resistance and an inertance in series therewith and an asymmetrical acoustical filter network, said filter network including means providing a pair of input acoustical capacitances with one each thereof disposed in each of the two sides of the filter to be subjected to a signal input, means including straight tube for providing acoustical resistance and inertance in output shunting relation to said input capacitances, acoustical capacitance means and a straight tube acoustical resistance-inertance means connected in series in one side of said filter and following said shunting resistance and inertance, an acoustical capacitance means in the other side of the filter and connected in an acoustical shunting relation between said input shunting straight tube connection and the output termination of said series connected capacitance and resistance-inertance to provide one output terminal of said filter, said electrolytic detector cell being connected in shunting relation to said last named acoustical capacitance means with one output termination common to said first mentioned filter output termination and a second output termination connected in impedance dividing relation between the acoustical capacitance provided by said detector cell and the series inertance and acoustical resistance thereof.

REFERENCES:
patent: 2661430 (1953-12-01), Hardway, Jr.
patent: 2769929 (1956-11-01), Hardway, Jr.
patent: 2782394 (1957-02-01), Hardway, Jr.
patent: 2824292 (1958-02-01), Christoph

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