Low-power noise characterization over a distributed speech recognition channel

摘要

A distributed speech recognition system includes a noise floor estimator to provide a noise floor estimate to a feature extractor. The feature extractor provides a parametric representation of the noise floor estimate. An encoder is included to encode the parametric representation of the noise floor estimate and to generate an encoded parametric representation of the noise floor estimate. A decoder is included to decode the encoded parametric representation of the noise floor estimate and to generate a decoded parametric representation of the noise floor estimate. A noise model generator creates a statistical model of noise feature vectors based on the decoded parametric representation of the noise floor estimate.