Francis C Onochie

US Patent:

20180077290, Mar 15, 2018

Filed:

Aug 23, 2017

Appl. No.:

15/683862

Inventors:

- Austin TX, US
Dillon Reed RITTER - Austin TX, US
Rodolfo SILVA - Austin TX, US
Eric BASS - Austin TX, US
Francis Chukwuemeka ONOCHIE - Escondido CA, US

International Classification:

H04M 9/08
H04B 3/23
H04B 3/21
G10L 25/84
G10L 21/0232

Abstract:

A full duplex voice communication method constituted of: estimating an acoustic echo within a near-end signal; cancelling the estimated acoustic echo; detecting whether, or not, a change has occurred in a near-end acoustic echo path, the received near-end signal represents speech and the received far-end signal represents silence, wherein, responsive to the results thereof, the method is further constituted of: alternately attenuating frequency components of the echo cancelled near-end signal by a first frequency domain attenuation value and by a second greater frequency domain attenuation value; alternately attenuating a first function of the frequency component attenuated echo cancelled near-end signal by a first switchable attenuation value and by a second greater switchable attenuation value; and alternately attenuating a second function of the received far-end signal by a third switchable attenuation value and by a fourth greater switchable attenuation value.

US Patent:

20170093460, Mar 30, 2017

Filed:

Sep 22, 2016

Appl. No.:

15/272453

Inventors:

- Austin TX, US
Francis Chukwuemeka ONOCHIE - Escondido CA, US

International Classification:

H04B 3/23
H04M 3/00
G10L 21/0224

Abstract:

An acoustic echo path change detection apparatus constituted of: a time domain path change detection functionality arranged to: detect a change in a near-end acoustic echo path responsive to a time domain analysis of a near-end signal and a signal output by an acoustic echo canceller; and output an indication of the detected change, a frequency domain path change detection functionality arranged to: detect a change in the near-end acoustic echo path responsive to a frequency domain analysis of a far-end signal and the signal output by the acoustic echo canceller; and output an indication of the detected change, and a combination path change detection functionality arranged to: determine a first function of the output indication of the time domain path change detection functionality and the output indication of the frequency domain path change detection functionality; and output the determined first function.