The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 14, 2025
Filed:
Jun. 03, 2020
Google Llc, Mountain View, CA (US);
Tara N. Sainath, Jersey City, NJ (US);
Ruoming Pang, New York, NY (US);
David Rybach, Mountain View, CA (US);
Yanzhang He, Palo Alto, CA (US);
Rohit Prabhavalkar, Mountain View, CA (US);
Wei Li, Fremont, CA (US);
Mirkó Visontai, Mountain View, CA (US);
Qiao Liang, Redwood City, CA (US);
Trevor Strohman, Sunnyvale, CA (US);
Yonghui Wu, Fremont, CA (US);
Ian C. Mcgraw, Menlo Park, CA (US);
Chung-Cheng Chiu, Sunnyvale, CA (US);
GOOGLE LLC, Mountain View, CA (US);
Abstract
Two-pass automatic speech recognition (ASR) models can be used to perform streaming on-device ASR to generate a text representation of an utterance captured in audio data. Various implementations include a first-pass portion of the ASR model used to generate streaming candidate recognition(s) of an utterance captured in audio data. For example, the first-pass portion can include a recurrent neural network transformer (RNN-T) decoder. Various implementations include a second-pass portion of the ASR model used to revise the streaming candidate recognition(s) of the utterance and generate a text representation of the utterance. For example, the second-pass portion can include a listen attend spell (LAS) decoder. Various implementations include a shared encoder shared between the RNN-T decoder and the LAS decoder.