Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Patent
1995-01-30
1998-06-16
MacDonald, Allen R.
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
345 237, 381 94, G10L 302, G10L 900
Patent
active
057684731
ABSTRACT:
This invention relates to an improved adaptive spectral estimator for estimating the spectral components in a signal containing both an information signal, such as speech and noise. The improvements relate to a noise power estimator and a computationally efficient gain calculation method. The adaptive spectral estimator is particularly suited to implementation using digital signal processing and can be used to provide improved spectral estimates of the information signal. It can be combined with a speech or voice recognition system. A further object of the invention is to provide an accurate method for voice detection.
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Davis Kenneth P.
Eatwell Graham P.
Edouard Patrick N.
MacDonald Allen R.
Noise Cancellation Technologies, Inc.
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