P

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 patents
US9818425B1Nov 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

RAWLES LLC

2 patents