Wai Chung Chu

Person

San Jose, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Sound source localization with reflection detection
- Patent number 12,143,783
- Issue date Nov 12, 2024
- Amazon Technologies, Inc.
- Wai Chung Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Analyzing audio signals for device selection
- Patent number 12,047,756
- Issue date Jul 23, 2024
- Amazon Technologies, Inc.
- Samuel Henry Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Direction finding of sound sources
- Patent number 11,950,062
- Issue date Apr 2, 2024
- Amazon Technologies, Inc.
- Wai Chung Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Sound source localization
- Patent number 11,915,698
- Issue date Feb 27, 2024
- Amazon Technologies, Inc.
- Borham Lee
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Directional speech separation
- Patent number 11,749,294
- Issue date Sep 5, 2023
- Amazon Technologies, Inc.
- Wai Chung Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Sound source localization using reflection classification
- Patent number 11,545,172
- Issue date Jan 3, 2023
- Amazon Technologies, Inc.
- Wai Chung Chu
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Dereverberation and noise reduction
- Patent number 11,386,911
- Issue date Jul 12, 2022
- Amazon Technologies, Inc.
- Kanthasamy Chelliah
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Analyzing audio signals for device selection
- Patent number 11,317,201
- Issue date Apr 26, 2022
- Amazon Technologies, Inc.
- Samuel Henry Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dereverberation and noise reduction
- Patent number 11,259,117
- Issue date Feb 22, 2022
- Amazon Technologies, Inc.
- Kanthasamy Chelliah
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Autonomously motile device with audio reflection detection
- Patent number 11,217,235
- Issue date Jan 4, 2022
- Amazon Technologies, Inc.
- Wai Chung Chu
- G05 - CONTROLLING REGULATING
Information Patent Grant
Omni-directional speech separation
- Patent number 11,107,492
- Issue date Aug 31, 2021
- Amazon Technologies, Inc.
- Wai Chung Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Sound source localization using multiple microphone arrays
- Patent number 10,966,022
- Issue date Mar 30, 2021
- Amazon Technologies, Inc.
- Wai C. Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Techniques for processing audio data
- Patent number 10,867,617
- Issue date Dec 15, 2020
- Amazon Technologies, Inc.
- Carlos Renato Nakagawa
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Directional speech separation
- Patent number 10,755,727
- Issue date Aug 25, 2020
- Amazon Technologies, Inc.
- Wai Chung Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Methods for voice enhancement
- Patent number 10,600,432
- Issue date Mar 24, 2020
- Amazon Technologies, Inc.
- Wai Chung Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Acoustic echo cancellation using visual cues
- Patent number 10,242,695
- Issue date Mar 26, 2019
- Amazon Technologies, Inc.
- Kavitha Velusamy
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Methods for suppressing residual echo
- Patent number 10,115,411
- Issue date Oct 30, 2018
- Amazon Technologies, Inc.
- Wai Chung Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Parallel output paths for acoustic echo cancellation
- Patent number 9,818,425
- Issue date Nov 14, 2017
- Amazon Technologies, Inc.
- Robert Ayrapetian
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Acoustic echo cancellation using visual cues
- Patent number 9,767,828
- Issue date Sep 19, 2017
- Amazon Technologies, Inc.
- Kavitha Velusamy
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Audio and depth based sound source localization
- Patent number 9,753,119
- Issue date Sep 5, 2017
- Amazon Technologies, Inc.
- Kavitha Velusamy
- G01 - MEASURING TESTING
Information Patent Grant
Methods to process direction data of an audio input device using az...
- Patent number 9,621,984
- Issue date Apr 11, 2017
- Amazon Technologies, Inc.
- Wai Chung Chu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Sound source locator with distributed microphone array
- Patent number 9,560,446
- Issue date Jan 31, 2017
- Amazon Technologies, Inc.
- Samuel Henry Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Sound source localization using multiple microphone arrays
- Patent number 9,489,948
- Issue date Nov 8, 2016
- Amazon Technologies, Inc.
- Wai C. Chu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Efficient dereverberation in networked audio systems
- Patent number 9,390,723
- Issue date Jul 12, 2016
- John Walter McDonough
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Acoustic echo cancellation processing based on feedback from speech...
- Patent number 9,373,338
- Issue date Jun 21, 2016
- Amazon Technologies, Inc.
- Ramya Gopalan
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Directional capability testing of audio devices
- Patent number 9,363,616
- Issue date Jun 7, 2016
- Amazon Technologies, Inc.
- Wai Chung Chu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Audio tap detection
- Patent number 9,351,089
- Issue date May 24, 2016
- Amazon Technologies, Inc.
- Wai C. Chu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Estimation of time delay of arrival for microphone arrays
- Patent number 9,319,787
- Issue date Apr 19, 2016
- Amazon Technologies, Inc.
- Wai Chung Chu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Estimation of time delay of arrival
- Patent number 9,081,083
- Issue date Jul 14, 2015
- Amazon Technologies, Inc.
- Wai C. Chu
- G01 - MEASURING TESTING
Information Patent Grant
Sound source localization using multiple microphone arrays
- Patent number 8,983,089
- Issue date Mar 17, 2015
- Rawles LLC
- Wai C. Chu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
DIRECTIONAL SPEECH SEPARATION
- Publication number 20200381002
- Publication date Dec 3, 2020
- AMAZON TECHNOLOGIES, INC.
- Wai Chung Chu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Image Data Compression and Decompression
- Publication number 20110216969
- Publication date Sep 8, 2011
- Wai C. Chu
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
ENERGY-BASED NONUNIFORM TIME-SCALE MODIFICATION OF AUDIO SIGNALS
- Publication number 20080133251
- Publication date Jun 5, 2008
- Wai C. Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
ENERGY-BASED NONUNIFORM TIME-SCALE MODIFICATION OF AUDIO SIGNALS
- Publication number 20080133252
- Publication date Jun 5, 2008
- Wai C. Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Methods and apparatuses for variable dimension vector quantization
- Publication number 20070118370
- Publication date May 24, 2007
- Wai C. Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Methods and apparatuses for variable dimension vector quantization
- Publication number 20070118366
- Publication date May 24, 2007
- Wai C. Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Methods and apparatuses for variable dimension vector quantization
- Publication number 20070118365
- Publication date May 24, 2007
- Wai C. Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Methods and apparatuses for variable dimension vector quantization
- Publication number 20070118371
- Publication date May 24, 2007
- Wai C. Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Optimized windows and methods therefore for gradient-descent based...
- Publication number 20070061136
- Publication date Mar 15, 2007
- Wai C. Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Optimized windows and interpolation factors, and methods for optimi...
- Publication number 20070061135
- Publication date Mar 15, 2007
- Wai Chung Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Optimized windows and interpolation factors, and methods for optimi...
- Publication number 20070055503
- Publication date Mar 8, 2007
- DoCoMo Communications Laboratories USA, Inc.
- Wai Chung Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Optimized windows and interpolation factors, and methods for optimi...
- Publication number 20070055504
- Publication date Mar 8, 2007
- Wai Chung Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Apparatus and method for audio coding
- Publication number 20060015329
- Publication date Jan 19, 2006
- Wai C. Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Methods and apparatuses for variable dimension vector quantization
- Publication number 20040176950
- Publication date Sep 9, 2004
- DoCoMo Communications Laboratories USA, Inc.
- Wai C. Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Optimized windows and methods therefore for gradient-descent based...
- Publication number 20040117175
- Publication date Jun 17, 2004
- Wai C. Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Optimized windows and interpolation factors, and methods for optimi...
- Publication number 20040083097
- Publication date Apr 29, 2004
- Wai Chung Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Method and apparatus for gradient-descent based window optimization...
- Publication number 20040083096
- Publication date Apr 29, 2004
- Wai C. Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Energy-based nonuniform time-scale modification of audio signals
- Publication number 20040068412
- Publication date Apr 8, 2004
- DoCoMo Communications Laboratories USA, Inc.
- Wai C. Chu
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Gradient descent optimization of linear prediction coefficient for...
- Publication number 20030204402
- Publication date Oct 30, 2003
- DoCoMo Communications Laboratories USA,Inc.
- Wai C. Chu
- H03 - BASIC ELECTRONIC CIRCUITRY

Wai Chung Chu

Person

Patents Grantslast 30 patents

Sound source localization with reflection detection

Analyzing audio signals for device selection

Direction finding of sound sources

Sound source localization

Directional speech separation

Sound source localization using reflection classification

Dereverberation and noise reduction

Analyzing audio signals for device selection

Dereverberation and noise reduction

Autonomously motile device with audio reflection detection

Omni-directional speech separation

Sound source localization using multiple microphone arrays

Techniques for processing audio data

Directional speech separation

Methods for voice enhancement

Acoustic echo cancellation using visual cues

Methods for suppressing residual echo

Parallel output paths for acoustic echo cancellation

Acoustic echo cancellation using visual cues

Audio and depth based sound source localization

Methods to process direction data of an audio input device using az...

Sound source locator with distributed microphone array

Sound source localization using multiple microphone arrays

Efficient dereverberation in networked audio systems

Acoustic echo cancellation processing based on feedback from speech...

Directional capability testing of audio devices

Audio tap detection

Estimation of time delay of arrival for microphone arrays

Estimation of time delay of arrival

Sound source localization using multiple microphone arrays

Patents Applicationslast 30 patents

DIRECTIONAL SPEECH SEPARATION

Image Data Compression and Decompression

ENERGY-BASED NONUNIFORM TIME-SCALE MODIFICATION OF AUDIO SIGNALS

ENERGY-BASED NONUNIFORM TIME-SCALE MODIFICATION OF AUDIO SIGNALS

Methods and apparatuses for variable dimension vector quantization

Methods and apparatuses for variable dimension vector quantization

Methods and apparatuses for variable dimension vector quantization

Methods and apparatuses for variable dimension vector quantization

Optimized windows and methods therefore for gradient-descent based...

Optimized windows and interpolation factors, and methods for optimi...

Optimized windows and interpolation factors, and methods for optimi...

Optimized windows and interpolation factors, and methods for optimi...

Apparatus and method for audio coding

Methods and apparatuses for variable dimension vector quantization

Optimized windows and methods therefore for gradient-descent based...

Optimized windows and interpolation factors, and methods for optimi...

Method and apparatus for gradient-descent based window optimization...

Energy-based nonuniform time-scale modification of audio signals

Gradient descent optimization of linear prediction coefficient for...