The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 05, 1996
Filed:
Sep. 19, 1994
Rainer Martin, Aachen, DE;
U.S. Philips Corporation, New York, NY (US);
Abstract
A mobile radio set includes a speech processing device for processing digital samples (x(i)) of speech signals which have noise components as well as speech components. Such device includes a control unit for continuously forming estimates of the signal-to-noise ratio of the speech signals by determining and smoothing the power values of the samples thereof, and determining the minimum of each successive group of L smoothed power values. The groups uninterruptedly succeed each other and each contains a sufficient number of smoothed power values so that all the values of a single group associated with a random phoneme of the speech signal can be combined. An estimate of the present signal-to-noise ratio is formed based on the present smoothed power value and the most recently determined minimum successive smoothed power value.