Location History:
- Tokyo-to, JP (2005)
- Tokyo, JP (2006 - 2011)
- Kanagawa, JP (2011)
- Fujisawa, JP (2012 - 2013)
Company Filing History:
11 out of 5,456 
1 out of 85 
1 out of 158 
Years Active: 2005-2013
Title: Mikio Tohyama: Innovator in Sound Technology
Introduction
Mikio Tohyama is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of sound technology, holding a total of 12 patents. His innovative work focuses on masking sound generation and noise suppression methods.
Latest Patents
Tohyama's latest patents include a masking sound generating apparatus, a masking system, a masking sound generating method, and a program. The masking sound generating apparatus utilizes a band divider to split a target sound signal into multiple frequency bands, generating corresponding band signals. An envelope signal generating part creates envelope signals that represent the envelopes of these band signals. The signal converter segments these envelope signals into frames, identifying and rearranging frames based on amplitude thresholds. The final output is a masking sound signal that effectively masks the target sound signal.
Another notable patent involves a noise suppressing method and apparatus that enhances noise suppression capabilities. This method employs the spectrum subtraction technique, allowing for improved frequency and temporal resolution in noise estimation and suppression. The observation signal length for noise spectrum analysis is set longer than that for the subtraction process, optimizing the overall noise suppression.
Career Highlights
Throughout his career, Mikio Tohyama has worked with esteemed companies such as Yamaha Corporation and Rion Company Ltd. His experience in these organizations has allowed him to refine his skills and contribute to advancements in sound technology.
Collaborations
Tohyama has collaborated with notable individuals in his field, including Toru Hirai and Yoshikazu Honji. These partnerships have fostered innovation and the development of cutting-edge sound technologies.
Conclusion
Mikio Tohyama's contributions to sound technology through his patents and collaborations highlight his role as a leading inventor in the industry. His innovative approaches to masking sound and noise suppression continue to influence advancements in audio technology.