US 2022/0013137 A1 · DISTINGUISHING USER SPEECH FROM BACKGROUND SPEECH IN SPEECH-DENSE ENVIRONMENTS

Abstract

A device, system, and method whereby a speech-driven system can distinguish speech obtained from users of the system from other speech spoken by background persons, as well as from background speech from public address systems. In one aspect, the present system and method prepares, in advance of field-use, a voice-data file which is created in a training environment. The training environment exhibits both desired user speech and unwanted background speech, including unwanted speech from persons other than a user and also speech from a PA system. The speech recognition system is trained or otherwise programmed to identify wanted user speech which may be spoken concurrently with the background sounds. In an embodiment, during the pre-field-use phase the training or programming may be accomplished by having persons who are training listeners audit the pre-recorded sounds to identify the desired user speech. A processor-based learning system is trained to duplicate the assessments made by the human listeners.

Claims20

Dependent claims

A method of speech recognition, the method comprising:

generating a normalized audio input based on an accessed audio input;
determining if the normalized audio input matches a standardized user voice, the standardized user voice based on a plurality of training samples, wherein a single training word is selected from the plurality of training samples and normalized to generate the standardized user voice;
categorizing the received audio input as a user speech originating from an operator of the SRD in an instance in which it is determined that the normalized audio input matches the standardized user voice;
comparing the received audio input against a template comprising a plurality of samples of user speech in an instance in which it is determined that the normalized audio input does not match the standardized user voice;
and
categorizing the received audio input as a background sound in an instance in which it is determined that the received audio input does not match a sample of user speech.

3 more elements

Dependencies are inferred from the claim text.

Distinguishing user speech from background speech in speech-dense environments

Life of this patent

Distinguishing user speech from background speech in speech-dense environments

Life of this patent

Abstract

Claims20