Adapting an utterance cut-off period based on parse prefix detection
AssigneeSoundHound, Inc.
InventorsPatricia Pozon Aguayo, Jennifer Hee Young Zhang, Jonah Probell
Life of this patent
Estimating the term…
Abstract
A processing system detects a period of non-voice activity and compares its duration to a cutoff period. The system adapts the cutoff period based on parsing previously-recognized speech to determine, according to a model, such as a machine-learned model, the probability that the speech recognized so far is a prefix to a longer complete utterance. The cutoff period is longer when a parse of previously recognized speech has a high probability of being a prefix of a longer utterance.
Claims14
A method of adjusting a cut-off period for detecting an end of a sentence, the method comprising:
- receiving a plurality of spoken words;
- detecting periods of voice activity and periods of no voice activity within the plurality of spoken words;
- parsing the plurality of spoken words according to a first grammar and a second grammar to determine whether the plurality of spoken words are a complete parse according to the first grammar and a prefix to another complete parse according to the second grammar;
- accessing an NVAD cut-off period calculated from prior speech;
- and
- scaling the NVAD cut-off period in accordance with a prefix hypothesis numerical score.
A system comprising:
- a processor;
- and
- system memory coupled to the processor and storing instructions configured to cause the processor to:
- receive a plurality of spoken words;
- detect periods of voice activity and periods of no voice activity within the plurality of spoken words;
- parse the plurality of spoken words according to a first grammar and a second grammar to determine whether the plurality of spoken words are a complete parse according to the first grammar and a prefix to another complete parse according to the second grammar;
- access an NVAD cut-off period calculated from prior speech;
- and
- scale the NVAD cut-off period in accordance with a prefix hypothesis numerical score.
Dependencies are inferred from the claim text.