Shuji Takata

Title: Shuji Takata and a Method for Extracting Formant Frequencies.

Introduction

Shuji Takata is an inventor associated with Kadoma, Japan, and Matsushita Electric Industrial Co., Ltd. His patent work includes a method designed to extract formant frequencies from speech signals efficiently.

Latest Patents

The provided information lists one patent for Takata: “Method for Extracting Formant Frequencies.” The method first calculates linear prediction coefficients from an input speech signal. It then estimates a coarse formant frequency using a linear combination of regression coefficients derived from speech feature parameters. Finally, it uses that estimate as an initial value to recursively approximate a root of an inverse filter until the calculation converges. This approach is intended to enable high-speed formant extraction.

Career Highlights

Takata’s listed patent reflects work in speech-signal processing, particularly the analysis of speech features and the efficient estimation of formant frequencies. His recorded patent total is 1 patent.

Collaborations

The provided information names Michiyo Goto and Yutaka Uekawa as Takata’s coworkers. It does not specify their roles in the patent or describe particular collaborative projects.

Conclusion

Shuji Takata’s listed invention applies regression-based estimation and iterative root approximation to speed up formant extraction, highlighting a focused contribution to speech-processing technology.