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1. (WO2001037609) ACOUSTIC MATCHING MATERIAL, METHOD OF MANUFACTURE THEREOF, AND ULTRASONIC TRANSMITTER USING ACOUSTIC MATCHING MATERIAL

Pub. No.:    WO/2001/037609    International Application No.:    PCT/JP2000/007981
Publication Date: Sat May 26 01:59:59 CEST 2001 International Filing Date: Sat Nov 11 00:59:59 CET 2000
IPC: H04R 1/28
Applicants: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

MOROZUMI, Hideki

BESSYO, Daisuke

OHJI, Kenzo

NAGAI, Takashi

Inventors: MOROZUMI, Hideki

BESSYO, Daisuke

OHJI, Kenzo

NAGAI, Takashi

Title: ACOUSTIC MATCHING MATERIAL, METHOD OF MANUFACTURE THEREOF, AND ULTRASONIC TRANSMITTER USING ACOUSTIC MATCHING MATERIAL
Abstract:
An acoustic matching material (1) is used to match the acoustic impedance of a first object to that of a sound object when sound is transmitted from the first object to the second object. The acoustic matching material (1) includes a plurality of minute pieces (2), at least one of which is coupled to another piece (2) to form a gap in the acoustic matching material (1).