Patent · US Expired

System and method enabling acoustic barge-in

US7392188B2 · kind B2 · utility

69Cited by

6References

22Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Jochen Junkawitsch · Hersbruck, DE
Raymond Brückner · Blaustein, DE
Klaus Reinhard · Arnstadt, DE
Stefan Dobler · Fairview Avenue, DE

Key dates

Filing date	Jul 31, 2003
Grant date	Jun 24, 2008
Priority date	—
Expiry date	Sep 27, 2025

Classification

Technology area (CPC G)Physics
CPC primaryG10L2021/02082
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A system and method enabling acoustic barge-in during a voice prompt in a communication system. An acoustic prompt model is trained to represent the system prompt using the specific speech signal of the prompt. The acoustic prompt model is utilized in a speech recognizer in parallel with the recognizer's active vocabulary words to suppress the echo of the prompt within the recognizer. The speech recognizer may also use a silence model and traditional garbage models such as noise models and out-of-vocabulary word models to reduce the likelihood that noises and out-of-vocabulary words in the user utterance will be mapped erroneously onto active vocabulary words.

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