Abstract: Motion-based voice activity detection may be provided. A data stream may be received and a determination may be made whether at least one non-audio element associated with the data stream indicates that the data stream comprises speech. In response to determining that the at least one non-audio element associated with the data stream indicates that the data stream comprises speech, a speech to text conversion may be performed on at least one audio element associated with the data stream.

Abstract: A computerized method is provided for electronically directing a call to a class, such that an utterance spoken by a speaker and received by a call-routing system is classified by the call-routing system as being associated with the class, such that the call-routing system includes a speech-recognition module, a feature-extraction module, and a classification module. The method includes extracting features from recognized speech; weighting elements of a feature vector with respective speech-recognition scores, wherein each weighting element is associated with one of the features; ranking classes to which the features are associated; and electronically directing the call to a highest-ranking class.