Adaptive multivariate estimating apparatus

Abstract From the Canadian patent

The present invention relates to an apparatus for determining the voicing decision for non-training set speech signals. The apparatus is comprised of a unit which is responsive to the non-training set speech signals for sampling the speech signals to produce digital speech signals, to form frames of the digital non-training set speech signals, and to process each frame to generate a set of classifiers defining speech attributes. A unit is also provided for estimating statistical distributions for voiced and unvoiced frames without prior knowledge of the voicing decisions for past ones of the frames of digital non-training set speech. A unit is provided which is responsive to these …