Signal processor

Details Signal processor Signal processor

1984-05-30

1986-04-22

Ciarlante, Anthony V.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Viscosity

73 405A, G01N 2904

Patent

active

045834067

ABSTRACT:
Apparatus for processing a composite noise signal containing sonic and ultrasonic components generally in a frequency range of about 20 Hz-100 KHz to make audible both components of the signal includes a heterodyne circuit operable in response to a rectangular wave local oscillator signal to produce output signals which are within the frequency range of human hearing.

REFERENCES:
patent: 3192516 (1965-06-01), Simpkins et al.
patent: 3222635 (1965-12-01), Simpkins et al.
patent: 3308424 (1967-03-01), Simpkins et al.

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