Patent · US Expired

Real-time speech and music classifier

US6785645B2 · kind B2 · utility

81Cited by

11References

17Claims

0Family size

Assignee

Microsoft Corporation · US

Inventors

Hosam A. Khalil · Redmond, US
Vladimir Cuperman · Goleta, US
Tian Wang · Indianapolis, US

Key dates

Filing date	Nov 29, 2001
Grant date	Aug 31, 2004
Priority date	—
Expiry date	Nov 29, 2021

Classification

Technology area (CPC G)Physics
CPC primaryG10L25/81
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

An efficient and accurate classification method for classifying speech and music signals, or other diverse signal types, is provided. The method and system are especially, although not exclusively, suited for use in real-time applications. Long-term and short-term features are extracted relative to each frame, whereby short-term features are used to detect a potential switching point at which to switch a coder operating mode, and long-term features are used to classify each frame and validate the potential switch at the potential switch point according to the classification and a predefined criterion.

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