This inventor holds 2 USPTO granted patents. Top assignees: Yamaha Corporation, Yamaha Hatsudoki Kabushiki Kaisha. Active years: 2016.
Company Filing History:
2 out of 5,499 
2 out of 4,350 
Years Active: 2016
Title: Heiji Maruyama: Innovator in Vehicle Sound Generation
Introduction
Heiji Maruyama is a notable inventor based in Shizuoka, Japan. He has made significant contributions to the field of vehicle sound generation, holding a total of 2 patents. His innovative work focuses on enhancing the auditory experience of vehicle operation.
Latest Patents
Maruyama's latest patents include a "Vehicle Sound Generation Apparatus" and a "Vehicle Sound Generation Method." The vehicle sound generation apparatus is designed with a first pressure sensor and a second pressure sensor. These sensors work in conjunction with a signal processing section that modifies pressure signals based on the automobile's operational state. The processed sound is then output through speakers, simulating the engine's intake sound. The first pressure sensor is strategically placed on the intake duct, while the second sensor is located between the engine and the throttle body.
The sound generating device for vehicles incorporates multiple pressure sensors that detect air pressures related to the engine's intake sound. These sensors output sound pressure signals that are processed according to the vehicle's driving conditions. The system includes loudspeakers that reproduce the engine's intake sound, enhancing the overall driving experience.
Career Highlights
Throughout his career, Heiji Maruyama has worked with prominent companies such as Yamaha Corporation and Yamaha Hatsudoki Kabushiki Kaisha. His experience in these organizations has allowed him to develop and refine his innovative ideas in vehicle sound technology.
Collaborations
Maruyama has collaborated with notable colleagues, including Yasuyuki Suzuki and Hideki Osawa. Their combined expertise has contributed to the advancement of sound generation technologies in vehicles.
Conclusion
Heiji Maruyama's contributions to vehicle sound generation reflect his innovative spirit and dedication to enhancing automotive technology. His patents demonstrate a commitment to improving the auditory experience for drivers and passengers alike.