US 12,014,726 B2 · Language model adaptation

Abstract

Exemplary embodiments relate to adapting a generic language model during runtime using domain-specific language model data. The system performs an audio frame-level analysis, to determine if the utterance corresponds to a particular domain and whether the ASR hypothesis needs to be rescored. The system processes, using a trained classifier, the ASR hypothesis (a partial hypothesis) generated for the audio data processed so far. The system determines whether to rescore the hypothesis after every few audio frames (representing a word in the utterance) are processed by the speech recognition system.

Claims18

Dependent claims

A computer-implemented method, comprising:

receiving audio data representing an utterance, the audio data comprising:
a first portion representing a first portion of the utterance, and
a second portion representing a second portion of the utterance subsequent to the first portion of the utterance;
performing automatic speech recognition (ASR) processing by an ASR processing component and using the first portion of the audio data to determine first ASR results data;
processing the first ASR results data, using a trained model, to determine that the utterance corresponds to a first domain;
determining first data representing the first domain;
and
performing ASR processing using the first data and the second portion of the audio data to determine second ASR results data.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/706,057Filed 28 Mar 2022 · continuation

Priority

30 May 2019

Published

US 2022/0358908 A110 Nov 2022

Granted

18 Jun 2024

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

G10L 15/065
Creation of reference templates; Training of speech recognition systems, e.g. adaptation to the characteristics of the speaker's voice: adaptation
G10L 15/1822
Using natural language modelling: parsing for meaning understanding
G10L 15/01
Speech recognition: assessment or evaluation of speech recognition systems
G10L 15/063
Creation of reference templates; Training of speech recognition systems, e.g. adaptation to the characteristics of the speaker's voice: training

Language model adaptation

Life of this patent

Language model adaptation

Life of this patent

Abstract

Claims18