Phone-based sub-word units for end-to-end speech recognition
US11328731B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2020 |
| Grant date | May 10, 2022 |
| Priority date | — |
| Expiry date | Nov 12, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L15/183
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
System and methods for identifying a text word from a spoken utterance are provided. An ensemble BPE system that includes a phone BPE system and a character BPE system receives a spoken utterance. Both BPE systems include a multi-level language model (LM) and an acoustic model. The phone BPE system identifies first words from the spoken utterance and determine a first score for each first word. The first words are converted into character sequences. The character BPE model converts the character sequences into second words and determines a second score for each second word. For each word from the first words that matches a word in the second words the first and second scores are combined. The text word is the word with a highest score.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.