Qiyong Liu

Title: Innovations of Qiyong Liu in Acoustic Echo Cancellation and Noise Removal

Introduction

Qiyong Liu is a prominent inventor based in Singapore, known for his contributions to audio processing technologies. He holds a total of 6 patents, showcasing his innovative approach to solving complex audio challenges. His work primarily focuses on enhancing audio quality in communication systems.

Latest Patents

One of Liu's latest patents is titled "Real-time low-complexity echo cancellation." This invention involves methods, systems, and apparatuses, including computer programs encoded on computer storage media, that relate to a method for acoustic echo cancellation. The system inputs one or more signal representations into an acoustic echo cancellation network comprising one or more network blocks to generate a mask. Each network block consists of one or more convolutional blocks, each of which contains one or more neural networks. The system combines the mask with a near-end audio signal representation to produce an echo-cancelled audio signal representation. Ultimately, the system generates an echo-cancelled audio signal based on this representation.

Another significant patent by Liu is "Dynamic noise and speech removal." This invention is particularly useful for online audio and video conference applications, where a noise removal module can eliminate unwanted audio from a participant's speech. The module differentiates between human speech and other audio to effectively filter out noise. In certain conference environments, both participant and non-participant human speech may be present. Liu's artificial intelligence models are trained to detect noise and non-participant audio based on various factors, allowing for accurate labeling of captured audio. Various noise removal modules can then filter noise based on the output of these models.

Career Highlights

Qiyong Liu has worked with notable companies such as Zoom Communications, Inc. and Zoom Video Communications, Inc. His experience in these organizations has allowed him to apply his innovative ideas in real-world applications, significantly impacting the field of audio technology.

Collaborations

Liu has collaborated with talented individuals such as Zhaofeng Jia and Yuhui Chen, contributing to the advancement of audio processing technologies.

Conclusion

Qiyong Liu's innovative work in acoustic echo cancellation and noise removal has made significant strides in improving audio quality for communication systems. His patents reflect a deep understanding of audio processing and a commitment to enhancing user experiences in various applications.