Tom Hong Li

Title: Tom Hong Li: Innovator in Speech Coding Technology

Introduction

Tom Hong Li is a notable inventor based in Grayslake, IL (US). He has made significant contributions to the field of speech coding technology, holding 2 patents that showcase his innovative approach to reducing coding bit requirements in speech processing.

Latest Patents

Li's latest patents include a "Low bit-rate speech coder using adaptive open-loop subframe pitch lag estimation and vector quantization." This invention involves a pitch lag coding device and method that utilizes interframe correlation inherent in pitch lag values to minimize coding bit requirements. A pitch lag value is extracted for a given speech frame and refined for each subframe. For every speech frame containing N samples of speech, LPC analysis and vector quantization are performed for the entire coding frame. The LPC residual obtained for each frame is processed so that pitch lag values for all subframes within the coding frame are analyzed concurrently. The remaining coding parameters, such as the codebook search, gain parameters, and excitation signal, are then analyzed sequentially according to their respective subframes.

Career Highlights

Throughout his career, Tom Hong Li has worked with prominent companies in the technology sector, including Rockwell Semiconductor Systems, Inc. and Conexant Systems, Inc. His experience in these organizations has contributed to his expertise in speech coding and related technologies.

Collaborations

Li has collaborated with various professionals in his field, including his coworker Huan-Yu Su. These collaborations have likely enriched his work and led to further advancements in his inventions.

Conclusion

Tom Hong Li is a distinguished inventor whose work in speech coding technology has made a significant impact. His innovative patents reflect his dedication to improving speech processing methods, and his career highlights demonstrate his valuable contributions to the industry.