Patent · US Expired

Arrangement for communication with a subscriber

US5784454A · kind A · utility

5Cited by

5References

9Claims

0Family size

Assignee

U.S. Philips Corporation · US

Inventors

Peter Patrick · Moorestown, US
Hans-Wilhelm Ruhl · Westerburg, DE
Stefan Dobler · Fairview Avenue, DE

Key dates

Filing date	Jul 27, 1995
Grant date	Jul 21, 1998
Priority date	—
Expiry date	Jul 27, 2015

Classification

Technology area (CPC H)Electricity
CPC primaryH04B3/21
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

The invention relates to an arrangement for communication with a subscriber. The arrangement includes a spectral analysis unit for producing short-time spectral values (Y(i)) of received signals (E) which signals are at times subscriber's speech signals superimposed by echoes of transmission signals (S) transmitted to the subscriber, a echo cancelling unit for estimating short-time spectral values of the echoes (X.sub.w (i)) and for producing difference values (D(i)) between the short-time spectral values (Y(i)) of the received signals (E) and the estimated short-time spectral values (X.sub.w (i)) of the echoes, and speech recognition unit for evaluating the difference values (D(i)).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.