Patent · US Active

Detecting barge-in in a speech dialogue system

US9026438B2 · kind B2 · utility

7Cited by

58References

25Claims

0Family size

Assignee

Nuance Communications, Inc. · US

Inventors

Markus Buck · Biberach, DE
Franz Gerl · Neu-Ulm, DE
Tim Haulick · Blaubeuren, DE
Tobias Herbig · Ulm, DE
Gerhard Uwe Schmidt · Ulm, DE
Matthias Schulz · Westerstetten, DE

Key dates

Filing date	Mar 31, 2009
Grant date	May 5, 2015
Priority date	—
Expiry date	Oct 2, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG10L2025/786
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method for detecting barge-in in a speech dialog system comprising determining whether a speech prompt is output by the speech dialog system, and detecting whether speech activity is present in an input signal based on a time-varying sensitivity threshold of a speech activity detector and/or based on speaker information, where the sensitivity threshold is increased if output of a speech prompt is determined and decreased if no output of a speech prompt is determined. If speech activity is detected in the input signal, the speech prompt may be interrupted or faded out. A speech dialog system configured to detect barge-in is also disclosed.

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