US 11,676,594 B2
Decaying automated speech recognition processing results
Matthew Sharifi, Kilchberg (CH); and Victor Carbune, Zürich (CH)
Assigned to Google LLC, Mountain View, CA (US)
Filed by Google LLC, Mountain View, CA (US)
Filed on Dec. 3, 2020, as Appl. No. 17/111,467.
Prior Publication US 2022/0180866 A1, Jun. 9, 2022
Int. Cl. G10L 15/22 (2006.01); G10L 25/78 (2013.01)
CPC G10L 15/22 (2013.01) [G10L 25/78 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A method comprising:
receiving, at data processing hardware of a voice-enabled device, an indication of a microphone trigger event indicating a possible user interaction with the voice-enabled device through speech, the voice-enabled device having a microphone that, when open, is configured to capture speech for recognition by an automated speech recognition (ASR) system;
in response to receiving the indication of the microphone trigger event:
instructing, by the data processing hardware, the microphone to open or remain open for an open microphone duration window to capture an audio stream in an environment of the voice-enabled device; and
providing, by the data processing hardware, the audio stream captured by the open microphone to the ASR system to perform ASR processing over the audio stream; and
while the ASR system is performing the ASR processing over the audio stream captured by the open microphone:
decaying, by the data processing hardware, a level of ASR processing that the ASR system performs over the audio stream based on a function of the open microphone duration window, the level of ASR processing being decayed from a first level of ASR processing to a second level of ASR processing different from the first level of ASR processing, the second level of ASR processing performing speech recognition over the audio stream; and
instructing, by the data processing hardware, the ASR system to use the second level of ASR processing for performing speech recognition over the audio stream captured by the open microphone.