Company Filing History:
Years Active: 1997-1998
Title: Ki-Chun Han: Innovator in Speech Signal Processing
Introduction
Ki-Chun Han is a notable inventor based in Daejeon, South Korea. He has made significant contributions to the field of speech signal processing, particularly in the development of methods that enhance the efficiency of vocoders. With a total of 3 patents to his name, Han's work is recognized for its innovative approaches to reducing pitch search time in speech synthesis.
Latest Patents
One of Han's latest patents is a "Pitch searching time reducing method for code excited linear prediction." This invention presents an improved technique for a CELP vocoder that significantly reduces pitch search time by utilizing a Line Spectral Pair (LSP) frequency. The method involves computing a decimation interval of a pitch search interval based on the first formant frequency of the LSP, allowing for a more efficient pitch search process. Another notable patent is the "Method for reducing pitch search time for vocoder." This invention outlines a process for receiving a speech signal, performing recognition weighting, and synthesizing a synthetic speech signal. It calculates pitch lag and filter coefficients by focusing on positive peaks, enabling real-time implementation of CELP vocoders.
Career Highlights
Ki-Chun Han is affiliated with the Electronics and Telecommunications Research Institute, where he continues to advance research in telecommunications and speech processing technologies. His work has been instrumental in developing methods that enhance the performance of communication systems.
Collaborations
Han has collaborated with several colleagues, including Kyung-Jin Byun and Jong-Jae Kim, contributing to various projects that aim to improve speech signal processing technologies.
Conclusion
Ki-Chun Han's innovative contributions to speech signal processing have established him as a key figure in the field. His patents reflect a commitment to enhancing communication technologies, making significant strides in the efficiency of vocoders.