Title:
【発明の名称】定常的信号と非定常的信号との識別
Document Type and Number:
Japanese Patent JPH08505715
Kind Code:
A
Abstract:
Signal frames containing background sounds in a mobile radio communication system are tested for stationarity. Consecutive measures DELTA En representing spectral changes in said signals from frame to frame are formed. From these measures a second measure of the rate of spectral change are formed. Finally, it is determined whether this second measure exceeds a predetermined stationarity limit gamma . If this is the case the signals are considered stationary.
Inventors:
Jansson, Class, Frederick, Janice
Application Number:
JP51315995A
Publication Date:
June 18, 1996
Filing Date:
October 19, 1994
Export Citation:
Assignee:
Telefon Acty Boraget Elm Ericsson
International Classes:
G10L19/012; G10L25/78; H04L27/00; (IPC1-7): G10L3/00; G10L9/00
Attorney, Agent or Firm:
Akira Asamura (3 outside)