Keiichi Katayanagi

Title: Keiichi Katayanagi: Innovator in Speech Signal Technology

Introduction

Keiichi Katayanagi is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of speech signal processing, particularly in the development of technologies that enhance communication devices.

Latest Patents

One of his notable patents is for a speech signal transmitting and receiving apparatus with noise sensitivity. This innovative device includes a speech signal transmitting encoding circuit, a noise domain detection unit, a noise level detection unit, and a controller. The encoding circuit efficiently compresses input speech signals through advanced digital signal processing. The noise domain detection unit identifies the noise environment using an analytic pattern generated by the encoding circuit. Additionally, the noise level detection unit measures the noise level of the detected domain, while the controller adjusts the received sound volume based on the noise level.

Career Highlights

Throughout his career, Keiichi Katayanagi has focused on enhancing communication technologies. His work has led to advancements that improve the clarity and quality of speech signals in various devices, including portable telephones.

Collaborations

Keiichi has collaborated with notable colleagues such as Kentaro Odaka and Masayuki Nishiguchi. Their combined expertise has contributed to the success of various projects in the field of speech signal technology.

Conclusion

Keiichi Katayanagi's innovative work in speech signal processing has made a lasting impact on communication technology. His patent reflects a commitment to improving the user experience in noisy environments.