Sub-models for neural contextual biasing
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United States of America
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Feb 18, 2025
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Oct 19, 2023
app pub date -
Apr 19, 2022
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Apr 19, 2022
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Abstract
A method for contextual biasing for speech recognition includes obtaining a base automatic speech recognition (ASR) model trained on non-biased data and a sub-model trained on biased data representative of a particular domain. The method includes receiving a speech recognition request including audio data characterizing an utterance captured in streaming audio. The method further includes determining whether the speech recognition request includes a contextual indicator indicating the particular domain. When the speech recognition request does not include the contextual indicator, the method includes generating, using the base ASR model, a first speech recognition result of the utterance by processing the audio data. When the speech recognition request includes the contextual indicator the method includes biasing, using the sub-model, the base ASR model toward the particular domain and generating, using the biased base ASR model, a second speech recognition result of the utterance by processing the audio data.
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