Company Filing History:
Years Active: 2016-2017
Title: Innovations of Youhong Lu in Acoustic Noise Reduction
Introduction
Youhong Lu is an accomplished inventor based in Redmond, WA, known for his contributions to acoustic noise reduction technologies. With a total of 3 patents, Lu has made significant strides in enhancing audio experiences through innovative solutions.
Latest Patents
One of Lu's latest patents is focused on user environment aware acoustic noise reduction. This invention describes a method where a noisy signal received by a computing device is transformed, and feature vectors of the received noisy signal are determined. The computing device accesses classification data corresponding to various user environments, each associated with a noise model. By comparing the determined feature vectors with the classification data, the device identifies the current user environment. It estimates noise levels, speech levels, and speech presence probabilities from the transformed noisy signal, ultimately reducing the noise signal to output an enhanced signal.
Another notable patent by Lu involves microphone placement for sound source direction estimation. This invention presents architectures for multiple microphones and their positioning in a device to estimate sound source direction and perform source separation. The device can determine the directions of sound sources and separate sounds coming from different directions using technologies such as blind source separation, independent component analysis, and beamforming. This capability allows for various audio enhancements, including noise reduction for communications and the generation of desired sound images like stereo audio output.
Career Highlights
Youhong Lu is currently employed at Microsoft Technology Licensing, LLC, where he continues to develop innovative audio technologies. His work has significantly impacted the field of acoustic engineering, particularly in enhancing user experiences in noisy environments.
Collaborations
Lu has collaborated with notable colleagues, including Syavosh Zad Issa and Rod G Fleck, contributing to the advancement of audio technology through teamwork and shared expertise.
Conclusion
Youhong Lu's innovative patents in acoustic noise reduction and sound source direction estimation demonstrate his commitment to improving audio technology. His work at Microsoft Technology Licensing, LLC, along with his collaborations, continues to shape the future of sound engineering.