Voice Coil

Voice Coil May 2018

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IN THIS ISSUE V O L U M E 3 1 , I S S U E 7 M A Y 2 0 1 8 1 INDUSTRY NEWS & DEVELOPMENTS By Vance Dickason 12 ACOUSTIC PATENTS By James Croft 14 TEST BENCH Two New 1" Exit Pro Sound Compression Drivers from Celestion and B&C Speakers By Vance Dickason 22 INDUSTRY WATCH By Vance Dickason By Vance Dickason 144 th AES International Convention Milan— The Power of Sound "The Power of Sound," this year's European Audio Engineering Society (AES) convention, the 144 th , will be held May 23-26, 2018 (exhibition: May 24-26) at the NH Hotel Milano Congress Centre in Milan, Italy. Loudspeaker-related papers and tutorials being presented at this year's convention include: • Characteristics of Vertical Sound Image with Two Parametric Loudspeakers—Shigeaki Aoki, Kanazawa Institute of Technology (Nonoichi, Japan); Kazuhiro Shimizu, Kanazawa Institute of Technology (Nonoichi, Japan); Kouki Itou, Kanazawa Institute of Technology (Nonoichi, Japan) A parametric loudspeaker utilizes nonlinearity of a medium and is known as a super-directivity loudspeaker. So far, the applications have been limited monaural reproduction sound systems. We had discussed characteristics of stereo reproduction with two parametric loudspeakers. In this paper the sound localization in the vertical direction using the upper and lower parametric loudspeakers was confirmed Industry News & Developments

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