Kazuo Nakata

Title: Kazuo Nakata: Innovator in Speech Signal Processing

Introduction

Kazuo Nakata is a prominent inventor based in Kodaira, Japan. He has made significant contributions to the field of speech signal processing, holding a total of 8 patents. His work focuses on methods and apparatuses that enhance the detection and classification of speech signals.

Latest Patents

Nakata's latest patents include a method and apparatus for speech signal detection and classification. This innovation utilizes a partial auto-correlation and residual power analysis circuit to extract normalized coefficients from input signals. The system classifies detected speech signals into voiced sounds, unvoiced sounds, and silence based on preset threshold values. Another notable patent is a method for extracting speech pitch, which selects pitch period candidates from a speech waveform and utilizes a guide index based on previously extracted pitch periods to determine the current speech pitch.

Career Highlights

Throughout his career, Kazuo Nakata has worked with esteemed companies such as Hitachi, Ltd. and Nippon Telegraph and Telephone Public Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in speech processing technology.

Collaborations

Nakata has collaborated with notable coworkers, including Akira Ichikawa and Kazuhiro Umemura. Their combined expertise has contributed to advancements in the field of speech signal processing.

Conclusion

Kazuo Nakata's contributions to speech signal processing through his patents and collaborations highlight his role as an influential inventor in this domain. His innovative methods continue to impact the way speech signals are detected and classified.