Shirley Hsiao-Mei Lee

Title: The Innovations of Shirley Hsiao-Mei Lee

Introduction

Shirley Hsiao-Mei Lee is a prominent inventor based in Chandler, AZ (US). She has made significant contributions to the field of digital communication, particularly in voice privacy and speech processing technologies. With a total of 2 patents, her work has had a notable impact on the industry.

Latest Patents

One of her latest patents is titled "Method and apparatus for implementing vector quantization of speech." This invention involves a vocoder that includes a digital signal processor and a vector quantizer implemented in hardware external to the digital signal processor. The vector quantizer features an analysis codebook with numerous scalar quantized code vectors. In this process, a frame of digitized speech is translated into speech parameters, which are then scalar quantized to form a source vector. This scalar quantized source vector is subsequently vector quantized in the vector quantizer before being transmitted into a communication channel. A separate synthesis codebook is utilized for decompressing vocoded speech received from the communication channel.

Another significant patent is the "Digital voice privacy apparatus and method." This invention encompasses a cellular voice privacy arrangement that includes a digital privacy unit as part of each subscriber's fixed equipment. The digital privacy unit consists of suitable analog to digital and digital to analog converters. A vocoder, digital signal processor, and modem work together to provide privacy. The identification numbers of each terminal are exclusive-ORed to create a scramble variable. Vocoder data is then exclusive-ORed with this scramble variable to produce scrambled data for transmission.

Career Highlights

Shirley Hsiao-Mei Lee is currently employed at Motorola Corporation, where she continues to innovate in the field of digital communication. Her work has been instrumental in advancing technologies that enhance voice privacy and improve speech processing capabilities.

Collaborations

Throughout her career, Shirley has collaborated with notable colleagues, including Bruce Alan Fette and Paul R. Kennedy. These partnerships have contributed to the development of her innovative technologies.

Conclusion

Shirley Hsiao-Mei Lee's contributions to the field of digital communication through her patents and work at Motorola Corporation highlight her role as a leading inventor. Her innovations in voice privacy and speech processing continue to shape the industry.