Akira Kurematsu

Title: Akira Kurematsu: Innovator in Voice Encoding Technology

Introduction

Akira Kurematsu is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of voice encoding and decoding technology. With a total of 5 patents to his name, Kurematsu has developed innovative solutions that enhance speech transmission and storage systems.

Latest Patents

One of Kurematsu's latest patents is a voice encoding and decoding device. This device utilizes Linear Predictive Coding (LPC) parameters and a baseband signal derived from the prediction error signal. The synthesis excitation signal is formed from the baseband plus high-frequency regeneration, which is then spectrum-flattened for proper synthesis. Another significant patent is his speech analysis-synthesis system. This system separates speech into various spectrum information, including the average of the linear prediction error signal, pitch period, and voiced/unvoiced decision signals. The system effectively synthesizes speech by applying correlation components to the input signal based on the spectrum information.

Career Highlights

Throughout his career, Kurematsu has worked with prominent companies such as Kokusai Denshin Denwa Co., Ltd. and Kokusai Denshin Denwa Kabushiki Kaisha. His work in these organizations has allowed him to refine his expertise in voice technology and contribute to advancements in the field.

Collaborations

Kurematsu has collaborated with several talented individuals, including Seishi Kitayama and Fumihiro Yato. Their combined efforts have led to innovative developments in voice encoding technology.

Conclusion

Akira Kurematsu's contributions to voice encoding and decoding technology have made a lasting impact in the field. His innovative patents and collaborations highlight his dedication to advancing speech transmission systems.