Energy estimator and method therefor

Details Energy estimator and method therefor Energy estimator and method therefor

1994-07-18

1997-09-09

Kuntz, Curtis

Electrical audio signal processing systems and devices

Noise or distortion suppression

H04B 1500

Patent

active

056664290

ABSTRACT:
An energy estimator (223) and method therefor decimates (401) a signal (211) to produce a decimated signal (411); rectifies (403) the decimated signal (411) to produce a full wave rectified signal (413); averages (405) the full wave rectified signal (413) over a predetermined time period to produce an averaged signal (415); applies a logarithmic function (407) to the averaged signal (415) to produce a logarithmic signal (417); and filters (409) the logarithmic signal (417) to produce an energy estimate (229) of the signal (211). The energy estimator (223) and method therefor advantageously reduces complexity while improving performance over those energy estimators of the prior art.

REFERENCES:
patent: 4491701 (1985-01-01), Duttweiler et al.
patent: 4630305 (1986-12-01), Borth et al.
patent: 4811404 (1989-03-01), Vilmur et al.
patent: 5027410 (1991-06-01), Williamson et al.
patent: 5150384 (1992-09-01), Cahill
patent: 5544250 (1996-08-01), Urbanski
patent: 5608804 (1997-03-01), Hirano

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