Discriminating between stationary and non-stationary signals

Details Discriminating between stationary and non-stationary signals Discriminating between stationary and non-stationary signals

1994-11-01

1996-11-26

MacDonald, Allen R.

Electrical audio signal processing systems and devices

Hearing aids, electrical

Specified casing or housing

395 237, 395 255, 395 217, 381 56, 455 63, G01L 300, G01L 302

Patent

active

055794351

ABSTRACT:
Signal frames containing background sounds in a mobile radio communication system are tested for stationarity. Consecutive measures .DELTA.E.sub.n 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.

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