Systems and methods for providing online fast speaker adaptation in speech recognition

A system for performing speaker adaptation when performing speech recognition, comprising:

• means for receiving an audio segment;
• means for identifying the audio segment as a first audio segment or a subsequent audio segment associated with a speaker turn;
• means for decoding the audio segment to generate a transcription associated with the first audio segment when the audio segment is the first audio segment;
• means for estimating a transformation matrix based on the transcription associated with the first audio segment;
• and
• means for decoding 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.

A decoder within a speech recognition system, comprising:

• a forward decoding stage;
• a backward decoding stage;
• and
• a rescoring stage;
• at least one of the forward decoding stage, the backward decoding stage, and the rescoring stage being configured to:
• receive an audio segment,
• identify the audio segment as a first audio segment or a subsequent audio segment associated with a speaker turn,
• decode the audio segment to generate a transcription associated with the first audio segment when the audio segment is the first audio segment,
• estimate a transformation matrix based on the transcription associated with the first audio segment, and
• decode 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.

A speech recognition system, comprising:

• speaker change detection logic configured to:
• receive a plurality of audio segments, and
• identify boundaries between speakers associated with the audio segments as speaker turns;
• and
• a decoder configured to:
• receive, from the speaker change detection logic, one of the audio segments as a received audio segment associated with one of the speaker turns,
• identify the received audio segment as a first audio segment or a subsequent audio segment associated with the speaker turn,
• decode the received audio segment to generate a transcription associated with the first audio segment when the received audio segment is the first audio segment,
• construct a transformation matrix based on the transcription associated with the first audio segment, and
• decode the received audio segment using the transformation matrix to generate a transcription associated with the subsequent audio segment when the received audio segment is the subsequent audio segment.