Location History:
- Kasaoka, JP (2001)
- Tokyo, JP (1997 - 2024)
Company Filing History:
3 out of 5,289 
2 out of 53 
2 out of 614 
Years Active: 1997-2025
Title: Hiroshi Sawada: Innovator in Acoustic Signal Enhancement
Introduction
Hiroshi Sawada is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of acoustic signal enhancement, holding a total of nine patents. His work focuses on improving the quality and clarity of sound through innovative devices and methods.
Latest Patents
Among his latest patents are the "Acoustic Signal Enhancement Device," "Acoustic Signal Enhancement Method," and "Program." The acoustic signal enhancement device is designed to receive a recording sound obtained by frequency division and update parameters. It includes a beamformer unit that performs processing based on a weighted spatial covariance matrix, which is updated to enhance the target sound. Additionally, the device features a switch unit that updates the switch weight and power of the target sound, outputting an estimation value of the target sound. Another patent, the acoustic signal enhancement apparatus, includes a time-space covariance matrix estimation unit that estimates a covariance matrix corresponding to a sound source. This unit works in conjunction with a reverberation suppression unit to generate a reverberation suppression signal vector, enhancing the sound source's clarity.
Career Highlights
Hiroshi Sawada has worked with notable companies such as Nippon Telegraph and Telephone Corporation and Mizusawa Industrial Chemicals, Ltd. His experience in these organizations has contributed to his expertise in acoustic technologies and innovations.
Collaborations
Throughout his career, Sawada has collaborated with talented individuals, including Rintaro Ikeshita and Hiroshi Igarashi. These partnerships have fostered a creative environment that has led to groundbreaking advancements in his field.
Conclusion
Hiroshi Sawada's contributions to acoustic signal enhancement demonstrate his innovative spirit and dedication to improving sound technology. His patents reflect a commitment to advancing the field and enhancing auditory experiences for users.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.