Kei Kikuiri

Title: Kei Kikuiri: Innovator in Audio Technology

Introduction

Kei Kikuiri is an accomplished inventor based in Tokyo, Japan, known for his significant contributions to audio technology. With an impressive portfolio of 37 patents, he has focused on enhancing the quality of audio encoding and decoding, tackling common issues such as distortion and packet loss.

Latest Patents

Among Kikuiri's latest innovations are several patents related to audio technology, including an audio decoding device, audio encoding device, audio decoding method, audio encoding method, audio decoding program, and audio encoding program. The core purpose of these inventions is to reduce distortion in frequency band components encoded with a limited number of bits while improving overall audio quality. His audio decoding device effectively decodes encoded audio signals and outputs high-fidelity audio. The decoding unit within the device is responsible for decoding an encoded sequence that contains the audio signal, leading to a resultant decoded signal. Furthermore, Kikuiri's designs incorporate a selective temporal envelope shaping unit that shapes the temporal envelope of the decoded signal based on decoding-related information, further refining audio quality.

His audio packet error concealment system features an encoding unit designed to manage audio signals composed of multiple frames coupled with an auxiliary information encoding unit. This unit estimates and encodes auxiliary information regarding the temporal power changes of the audio signal, which is crucial for effective packet loss concealment during the audio signal decoding process. The auxiliary information may include parameters that approximate the powers of subframes or vectors representing the quantized powers.

Career Highlights

Kikuiri's professional journey includes work with prominent organizations, notably NTT Docomo, Inc. and JPMorgan Chase Bank N.A. as a Collateral Agent. His innovative approach and technical expertise have established him as a leading figure in the audio technology sector, consistently pushing the boundaries of what is possible in audio processing.

Collaborations

Throughout his career, Kei Kikuiri has collaborated with talented individuals in the field, including notable coworkers such as Atsushi Yamaguchi and Kimitaka Tsutsumi. These collaborations have allowed him to refine his inventions and contribute more effectively to the audio technology landscape.

Conclusion

In conclusion, Kei Kikuiri stands out as a pioneering inventor whose work in audio technology has made significant strides in improving audio quality and decoding efficiency. His patented innovations not only showcase his technical acumen but also highlight the ongoing evolution of audio processing technologies. As he continues to develop new solutions, Kei Kikuiri remains a crucial contributor to advancements in the industry.