Teruo Doi

Title: Teruo Doi: Innovator in Loudspeaker Technology

Introduction

Teruo Doi is a prominent inventor based in Mie, Japan, known for his contributions to loudspeaker technology. With a total of 4 patents, Doi has made significant advancements in the design and functionality of speaker systems.

Latest Patents

Doi's latest patents include innovative designs for loudspeakers and diaphragms. One of his notable inventions is a diaphragm that is created through the co-molding of various parts using thermoplastic resin. This design enhances the resonance characteristics by increasing the thickness of the central dome part, which minimizes resonance amplitude. Additionally, an annular rib is integrated into the voice coil junction part to strengthen the connection between the diaphragm and the voice coil bobbin. This innovation allows for effective transmission of electromagnetic driving force, resulting in a loudspeaker with exceptional performance.

Another significant patent is for a speaker system that optimizes acoustic characteristics for visual equipment. This system controls turbulence in the mid-range frequency response, ensuring flat characteristics that enhance speech articulation. By coupling an acoustic pipe to the front of the speaker unit, sound waves are guided through a specially designed opening. The system includes a resonance absorption section that effectively suppresses peaks and dips in sound response, leading to a speaker system with excellent acoustic properties.

Career Highlights

Teruo Doi has spent a considerable part of his career at Matsushita Electric Industrial Co., Ltd., where he has been instrumental in developing cutting-edge audio technologies. His work has not only advanced the field of acoustics but has also contributed to the overall enhancement of consumer audio experiences.

Collaborations

Throughout his career, Doi has collaborated with notable colleagues, including Takashi Sabato and Toshihide Takizawa. These partnerships have fostered innovation and have played a crucial role in the development of new technologies in the audio industry.

Conclusion

Teruo Doi's contributions to loudspeaker technology and his innovative patents have significantly impacted the audio industry. His work continues to influence the design and functionality of speaker systems, ensuring high-quality sound experiences for consumers.