Company Filing History:
Years Active: 1999
Title: Innovations of Makoto Takashima
Introduction
Makoto Takashima is a notable inventor based in Funabashi, Japan. He has made significant contributions to the field of audio signal processing, particularly in coding and decoding methods. With a total of 2 patents, his work has had a considerable impact on the efficiency of audio transmission.
Latest Patents
Takashima's latest patents include a method for coding and decoding audio signals, as well as a coding and decoding device. The primary objective of his invention is to ensure that degradation of sound quality, which can be perceptible to listeners, does not occur at low bit rates. His innovative approach involves a decoding device that divides the frequency domain into multiple sub-bands. This allows for the approximation of normalized transform coefficients in sub-bands with allocated bit values below a predetermined threshold. The method effectively utilizes a quantized value from a different sub-band to maintain sound quality.
Career Highlights
Makoto Takashima is associated with Hitachi, Ltd., where he has been able to apply his expertise in audio signal processing. His work has focused on adaptive transform coding and decoding arrangements that exploit redundancies in the spectrum envelope. This allows for efficient coding at low bit rates, making his contributions vital in the field of audio technology.
Collaborations
Throughout his career, Takashima has collaborated with esteemed colleagues such as Yoshiaki Asakawa and Hidetoshi Sekine. Their combined efforts have further advanced the innovations in audio signal processing.
Conclusion
Makoto Takashima's contributions to audio signal processing through his patents and collaborations have established him as a significant figure in the field. His innovative methods continue to influence the efficiency of audio coding and decoding technologies.