Verizon Corporate Services Group Inc.

Bbn Technologies Corporation

Bbnt Solutions Llc.

Daben Liu

Francis G Kubala

An audio classification system classifies sounds in an audio stream as belonging to one of a relatively small number of classes. The audio classification system includes a signal analysis component [and a decoder [. The decoder [includes a number of models [-] for performing the audio classifications. In one implementation, the possible classifications include: vowels, fricatives, narrowband, wideband, coughing, gender, and silence. The classified audio may be used to enhance speech recognition of the audio stream.

Systems and methods for classifying audio into broad phoneme classes

A system () performs speaker adaptation when performing speech recognition. The system () receives an audio segment and identifies the audio segment as a first audio segment or a subsequent audio segment associated with a speaker turn. The system () then decodes the audio segment to generate a transcription associated with the first audio segment when the audio segment is the first audio segment and estimates a transformation matrix based on the transcription associated with the first audio segment. The system () decodes the audio segment using the transformation matrix to generate a transcription associated with the subsequent audio segment when the audio segment is the subsequent audio segment.

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Belmont, MA, United States of America

Daben Liu