Patent · US Expired

Speech analyzing stage and method for analyzing a speech signal

US7062431B2 · kind B2 · utility

1Cited by

2References

26Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Hans-Gunter Hirsch · Heroldsberg, DE
Volker Springer · Wendelstein, DE
Rainer Klisch · Koblenzer Straße, DE
Karl Hellwig · Wonfurt, DE

Key dates

Filing date	Jan 16, 2002
Grant date	Jun 13, 2006
Priority date	—
Expiry date	Apr 21, 2024

Classification

Technology area (CPC G)Physics
CPC primaryG10L15/02
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A speech analyzing stage (12) and a method for analyzing a speech signal is described. The speech analyzing stage (12) is part of an automatic speech recognition system (10) and is adapted for analyzing in the spectral domain a speech signal sampled at one of at least two different system sampling rates. The speech analyzing stage (12) comprises a first spectral analyzer (18a) for analyzing the speech signal up to a first frequency (flowest) which is preferably derived from the lowest system sampling rate (2×flowest) and a second spectral analyzer (18b) for analyzing the speech signal at least above the first frequency (flowest).

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