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Featured researches published by Junichi Hayakawa.


Journal of the Acoustical Society of America | 1993

Low sound loudspeaker system

Junichi Hayakawa

A low sound loudspeaker system is constructed of an acoustic pipe extending from the back side of a loudspeaker unit, an air chamber provided at the front side of the loudspeaker unit, and a bass reflex port provided within the air chamber. The acoustic pipe communicates with the air chamber via the aperture of the acoustic pipe.


Journal of the Acoustical Society of America | 2000

Speaker system and its support legs

Yoshio Sakamoto; Junichi Hayakawa; Syuuhei Ohta; Shirou Iwakura


Archive | 2005

Electronic book, control method, and program

Junichi Hayakawa; 純一 早川


Archive | 1997

SPEAKER DEVICE FOR THIN TYPE TELEVISION

Junichi Hayakawa; 純一 早川


Archive | 2006

Audio system and speaker system

Junichi Hayakawa; 純一 早川


Archive | 1998

DIAPHRAGM FOR LOUDSPEAKER

Junichi Hayakawa; Masaya Kasai; 純一 早川; 雅弥 笠井


Archive | 1993

VIBRATION DETECTOR FOR SPEAKER

Junichi Hayakawa; Yoshio Sakamoto; 良雄 坂本; 純一 早川


Archive | 2008

Speaker installation system and speaker device

Junichi Hayakawa; Toshihisa Saida; 純一 早川; 俊久 道祖田


Archive | 2008

BONE OSCILLATION SEAT

Junichi Hayakawa; Masanori Miura; Akio Shiratori; Mitsutaka Tanase; 正典 三浦; 純一 早川; 光隆 棚瀬; 彰男 白鳥


Archive | 2001

Automotive composite switch lever

Junichi Hayakawa; 純一 早川

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