ELECTRO-ACOUSTIC SPEAKING-TUBE MOUNTED TRANSDUCER WITH TUBE DIFFUSER MADE OF WOOD AND HAVING EXPONENTIAL PROFILE IN LONGITUDINAL CROSS-SECTION

摘要

PCT No. PCT/EP96/02301 Sec. 371 Date Jan. 8, 1998 Sec. 102(e) Date Jan. 8, 1998 PCT Filed May 29, 1996 PCT Pub. No. WO96/38834 PCT Pub. Date Dec. 5, 1996An acoustic horn transducer with a conic type diffuser has an exponential profile. The diffuser is formed from wood and has an axial length less than its maximum outer diameter.