Member Profile: Charlie Hughes

Charlie Hughes

Location: Gastonia, NC (the Charlotte area)

Education: BS, Physics, Georgia Institute of Technology

Occupation: Electro-acoustical consultant/loudspeaker design engineer

Member Status: Charlie said he has been reading Voice Coil since about 1988, and he is a frequent contributor to audioXpress.

Affiliations: Audio Engineering Society (AES), Acoustical Society of America (ASA), Association for Loudspeaker Manufacturing & Acoustics (ALMA) International, Consumer Electronics Association (CEA), National Systems Contractor Association (NSCA), and Synergy Audio Concepts (Syn-Aud-Con)

Audio Interests: Charlie is primarily interested in Constant directivity loudspeaker systems capable of reproducing square waves.

Most Recent Purchase: A set of JH Audio JH13 in-ear monitors

Current Audio Projects: Projects Charlie said he has in the works include a constant directivity line-array loudspeaker and a large format, full-range, high-SPL horn-loaded loudspeaker.

Dream System: Charlie said he hasn’t completed his dream system yet, but he is working on it.

ALMA at CES 2013

The Association of Loudspeaker Manufacturing and Acoustics (ALMA) Winter Symposium, “Product Development in the Global Paradigm: Acoustic Modeling, Measurement, and Manufacturing in the Modern Marketplace” will take place prior to CES, on January 6 and January 7, 2013, at The Tuscany Suites & Casino, 255 East Flamingo Road, Las Vegas, NV. This program is loaded with technical presentations covering microdrivers, microphones, hearing aids, and other transducer-related technology. Registration is open.

Seminars—The symposium program features two powerful half-day seminars taught by widely respected loudspeaker experts: “Moving Coil Transducer Motor Design,” facilitated by Richard Little, founder of Far North Electroacoustics, and “Miniature Speakers and Microphones: Design and Application,” facilitated by Osman Isvan, a renowned inventor and audio systems engineer.

Papers and tutorials—Papers and tutorials will feature: “Audio System Variance in Production Vehicles” by Dr. Steve Hutt; “Following Load Lines to your Working Points,” and “Reluctance to Optimize: Coercing the Most Out of Your Magnets” by Dr. David Hyre, CTO, Dyne Analytics; “Perception and Measurement of Headphones,” by Dr. Sean Olive, director of Acoustic Research for Harman International; “Fast, Quality Testing of Loudspeaker Suspension Parts and Passive Radiators,” by Robert Werner and Dr. Wolfgang Klippel; “Modeling the Large Signal Behavior of Micro-Speakers,” by Daniel Knobloch and Dr. Wolfgang Klippel; “Measurement of Harmonic Distortion Audibility Using a Simplified Psychoacoustic Model,” by Steve Temme, president, Listen; “Estimating Short and Long Term Power Requirements for Powered Speakers,” Tim Sheen, Sonos; “A Modern Approach to Bass Response Extension in Conventionally Sized Loudspeakers,” by Boaz Shalev, CTO, Atlantic Technology; “Estimating Short and Long Term Power Requirements for Powered Speakers,” by Tim Sheen, Sonos; “MoTIV Motor Modeling Software,” by Mark Beach and Dan Wiggins, DYNE Analytics; “A New Algorithm for Surround Sound,” by Spiro Iraclianos, Global Transducer engineer, Harman International Automotive Division; and “Fine Measurements with the FINE R+D System,” by Peter Larsen, president, Loudsoft.

Driver Award Banquet—The popular ALMA loudspeaker industry Driver Award Banquet is Sunday evening, January 6, also at The Tuscany Suites & Casino. Driver Awards will be given to deserving recipients in the following categories: The Beryllium Lifetime Achievement Award, which recognizes significant and sustained contributions to the loudspeaker industry over the lifetime of a career; the Titanium Driver Award, which recognizes a specific technical contribution, accomplishment, or expertise in the loudspeaker industry; and the Gold Driver Award, which recognizes contributions to ALMA International.

Roundtables & Panel—The symposium’s theme, “Product Development in the Global Paradigm: Acoustic Modeling, Measurement, and Manufacturing in the Modern Marketplace” will be closely examined in roundtable discussions with a panel discussion follow up. Steve Temme, Listen’s president, will facilitate the discussion on measurement. Dr. Alex Voishvillo, JBL Professional’s senior manager of Transducer Engineering, will facilitate the discussion on modeling. Dan Wiggins of Dyne Analytics will facilitate the discussion on manufacturing, and Ken Berger will facilitate the discussion on international business. Peter Andrews of Materion Electrofusion will moderate.

The ALMA Winter Symposium is the world’s largest event entirely dedicated to the loudspeaker industry. ALMA is the only international trade association dedicated to improving the design and manufacture of loudspeakers. Visit www.almainternational.org for more information, to register to attend, to exhibit, or to sponsor the symposium.