Inventor
CHU WAI CHUNG
US25 patents
⚠️ This page may combine multiple inventors who share the name “CHU WAI CHUNG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AMAZON TECH INC
23 patentsUS9818425B1Nov 14, 2017
Parallel output paths for acoustic echo cancellation
AMAZON TECH INC36 citations94
US9753119B1Sep 5, 2017
Audio and depth based sound source localization
AMAZON TECH INC35 citations94
US9621984B1Apr 11, 2017
Methods to process direction data of an audio input device using azimuth values
AMAZON TECH INC39 citations94
US11107492B1Aug 31, 2021
Omni-directional speech separation
AMAZON TECH INC9 citations85
US10115411B1Oct 30, 2018
Methods for suppressing residual echo
AMAZON TECH INC19 citations85
US11217235B1Jan 4, 2022
Autonomously motile device with audio reflection detection
AMAZON TECH INC12 citations84
US10867617B1Dec 15, 2020
Techniques for processing audio data
AMAZON TECH INC7 citations84
US10755727B1Aug 25, 2020
Directional speech separation
AMAZON TECH INC10 citations84
US9390723B1Jul 12, 2016
Efficient dereverberation in networked audio systems
AMAZON TECH INC11 citations82
US11915698B1Feb 27, 2024
Sound source localization
AMAZON TECH INC7 citations81
US11545172B1Jan 3, 2023
Sound source localization using reflection classification
AMAZON TECH INC6 citations74
US11749294B2Sep 5, 2023
Directional speech separation
AMAZON TECH INC2 citations73
US11317201B1Apr 26, 2022
Analyzing audio signals for device selection
AMAZON TECH INC2 citations73
US10600432B1Mar 24, 2020
Methods for voice enhancement
AMAZON TECH INC4 citations73
US11386911B1Jul 12, 2022
Dereverberation and noise reduction
AMAZON TECH INC3 citations71
US11259117B1Feb 22, 2022
Dereverberation and noise reduction
AMAZON TECH INC4 citations71
US12487356B1Dec 2, 2025
Method for wall direction estimation
AMAZON TECH INC1 citations64
US12047756B1Jul 23, 2024
Analyzing audio signals for device selection
AMAZON TECH INC0 citations62
US11950062B1Apr 2, 2024
Direction finding of sound sources
AMAZON TECH INC1 citations62
US12531064B1Jan 20, 2026
Audio-based user engagement detection
AMAZON TECH INC0 citations52
US12482484B1Nov 25, 2025
Location estimation of sound sources
AMAZON TECH INC0 citations52
US12143783B1Nov 12, 2024
Sound source localization with reflection detection
AMAZON TECH INC0 citations52
US12531084B1Jan 20, 2026
Target likelihood fusion
AMAZON TECH INC0 citations48