Location History:
- Yokohama, JA (1978)
- Kawasaki, JP (1979)
- Yokohama, JP (1979)
- Kamakura, JP (1985)
Company Filing History:
Years Active: 1978-1985
Title: Sadao Nomoto: Innovator in Acoustic Technology
Introduction
Sadao Nomoto is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of acoustic technology, holding a total of 4 patents. His innovative work focuses on methods and devices that enhance sound recording and noise control.
Latest Patents
Nomoto's latest patents include a "Method and apparatus for forming photographic record of sound field." This invention discloses a technique for creating a photographic record that represents the acoustic characteristics of a sound field, such as sound pressure distribution and equiphase surface wave distribution. The method involves the reciprocal movement of a microphone and a light-emitting diode to scan a plane in the sound field. An envelope signal from the microphone is derived and sampled to produce a sample signal. This signal is then used to modulate a carrier frequency, controlling a switching circuit that turns the light-emitting diode on and off, ultimately recording an image of the light spot on photographic film.
Another significant patent is the "Device for controlling a propagation direction of noise." This device is designed to work in conjunction with sound insulating walls to improve their effectiveness in reducing noise from sources like railroads and highways. The device features a hollow structural body with vertical hollow passages that refract and lag the noise, creating a sound-reducing region between direct and refracted sound propagation.
Career Highlights
Sadao Nomoto is currently associated with Bridgestone Tire Company Limited, where he applies his expertise in acoustic technology. His work has contributed to advancements in sound control and noise reduction, making a positive impact on various industries.
Collaborations
Nomoto has collaborated with notable coworkers, including Kazuyoshi Iida and Masayasu Matsumoto. Their combined efforts have led to innovative solutions in the field of acoustics.
Conclusion
Sadao Nomoto's contributions to acoustic technology through his patents and collaborations highlight his role as a significant inventor in this field. His innovative methods and devices continue to influence sound recording and noise control technologies.