Method and apparatus for processing signals

Details Method and apparatus for processing signals Method and apparatus for processing signals

1978-08-02

1980-09-16

Olms, Douglas W.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

333174, 455307, H04R 300

Patent

active

042231817

ABSTRACT:
Auto-adaptive filtering devices for analysis and treatment or processing of A.F. signals.
These devices are characterized in that they include filtering means splitting the applied signals into two parts or channels having complementary spectra, a first channel being considered as error channel to determine a function of versus predetermined criteria, the transmission of the other channel and to react on the positioning of the cutoff frequencies of the filtering means.
Main applications being noise reducers, band-reduction devices, devices for speech analysis and synthesis.

REFERENCES:
patent: 2148994 (1939-02-01), Mennerich
patent: 2760011 (1956-08-01), Berry
patent: 2832828 (1958-04-01), Levy
patent: 3921077 (1975-11-01), Suzuki

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