Speech enhancement apparatus

Details Speech enhancement apparatus Speech enhancement apparatus

1994-10-04

1996-06-25

Kuntz, Curtis

Electrical audio signal processing systems and devices

Noise or distortion suppression

Interpolation

381 56, 381 46, 381 47, H04B 1500

Patent

active

055307680

ABSTRACT:
An apparatus for enhancing speech sounds includes an input circuit for receiving speech sounds and for converting said speech into a speech signal; a rectifier for rectifying the speech signal; a first time constant circuit for applying a first time constant to the output of the rectifier; a second time constant circuit for applying a second time constant to the output of the rectifier; a divider for obtaining the ratio of the output of the first time constant circuit to the output of the second time constant circuit; a multiplier for multiplying the speech signal by the ratio obtained by the divider; and an output circuit for converting the output of the multiplier into speech sounds.

REFERENCES:
patent: 4589138 (1986-05-01), Milner et al.
patent: 4771472 (1988-09-01), Williams et al.
patent: 5007095 (1991-04-01), Nara et al.
Search Report for European Appl. 94115784.4, mailed Jul. 2, 1995.

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