Meeting Report – August 2011 – Symphony On The Prairie Tour & Concert

At this, the fourth of our meetings scheduled for the year which was held on August 6th, 2011 at 6pm, we were privileged to have Alan Alford speak to us about the makeup of the Indianapolis Symphony Orchestra’s sound reinforcement needs at Conner Prairie.

Alford discussed with the amply sized crowd the numerous challenges of the job, including the difficulties of respecting the neighboring living history museum while providing quality sound for the symphony.

Alan Alford speaking to members of the Central Indiana AES. Click for more pictures.

Additionally, Alan shared with us his off-season duties, tricks he utilizes throughout a typical concert, and also gave the section a tour of the concert setup.

The meeting was once again brought to us courtesy of Conner Prairie and The Indianapolis Symphony Orchestra. Our thanks go out to them for being such gracious hosts.

With this meeting we’ve continued our initiative of recording events for archival purposes and to allow for participation from members unable to travel.

Click to view.

However, being an outdoor lecture and tour, the video’s audio quality suffered severely which we do apologize. But, if you’d like to see the tour first hand, the video at left is still a great resource.

Finally, we’d like to thank all who were in attendance. As always, those with questions or concerns are encouraged to contact us. To stay up to date on section activities, be sure to follow us on Facebook or Twitter.

Meeting Report: Dr. Uwe J. Hansen on Phase Considerations in Signal Processing

At this, the third of our meetings scheduled for the year which was held on May 12th, 2011 at 7pm, we were privileged to have Dr. Uwe J. Hansen speak on Phase Considerations in Signal Processing.

Dr. Hansen is Professor Emeritus of Physics at Indiana State University and a fellow of the Acoustical Society of America, among numerous other distinctions.

The meeting was held in the conference room of ESCO Communications Indianapolis office, where Dr. Hansen spoke before an enthusiastic crowd.

Dr. Hansen speaking to members of the Central Indiana AES. Click for more pictures.

In his presentation, Dr. Hansen discussed how phase comparison can be a powerful tool with countless real-world applications. The three specific applications of phase related signal processing techniques discussed were phase sensitive detection, optical holography, and modal analysis.

Dr. Hansen explained that the elements essential to describing a monochromatic wave are amplitude, frequency, wavelength, speed of propagation, polarization and phase.

Additionally, it was explained that phase identifies the location of a point along the propagating waves and that absolute phase measurements are not only difficult but generally not of interest.

Click to view.

The meeting was once again brought to us courtesy of ESCO Communications. Our thanks go out to them for the continued use of their facilities.

With this meeting we’ve continued our initiative of recording events for archival purposes and to allow for participation from members unable to travel. The video from this meeting is available at left for playback.

Finally, we’d like to thank all who were in attendance. As always, those with questions or concerns are encouraged to contact us. To stay up to date on section activities, be sure to follow us on Facebook or Twitter.

Meeting Report & Recording – March 2011 – John Murray And The 2010 NFPA 72 Fire Code

At this, the second of our meetings scheduled for the year which was held on March 17th, 2011 at 7pm, we were privileged to have John Murray speak on the new 2010 NFPA 72 fire code.

John has been an Audio Engineering Society member since 1980, is the principal and founder of Optimum System Solutions, and has seen a distinguished 30+ year career within the industry.

John Murray speaking to the Central Indiana AES. Click for more pictures.

A small but enthusiastic group was present at this meeting, which opened with brief introductions and announcements, moving directly to the presentation.

In his presentation, John discussed the new NFPA-72 regulations and how they relate to speech intelligibility and therefore to STI measurements. He explained how these measurements and the achievement of good speech intelligibility are necessary to meet the new regulations. John also demonstrated the process of measuring and evaluating STI in several spaces to show what is required and what measurements are required to pass the new code.

Another topic discussed were the various types of systems described within the code and what requirements regarding UL certified equipment and speech intelligibility would apply, and why this code change was an opportunity for contractors.

It was indicated that the new code imposes certain responsibilities upon those same contractors to design and install systems which would meet the new requirements. This means that the contractors will need to learn more about STI and testing in order to properly design and install projects to meet the new requirements.

The meeting was brought to us courtesy of Renkus-Heinz, Inc. and McFadden Sales., and our thanks go out to ESCO Communications for the continued use of their facilities.

With this meeting we’ve continued our initiative of recording events for archival purposes and to allow for participation from members unable to travel. The recording from this meeting is available below for playback. As well, those who are so inclined can also download the recording for playback in their audio program of choice. Our apologies in advance for the somewhat boomy nature of the recording.

We’d like to thank all who were in attendance. As always, those with questions or concerns are encouraged to contact us.

Meeting Report & Recording – January 2011 – Acoustic Treatment: Why & How

At this, the first of our meetings scheduled for the year which was held on January 27th, 2011 at 7pm, we regrettably had to deviate from our previously scheduled speaker.

Just hours before our meeting Eric Smith, Founder & President of Auralex Acoustics Inc., had to beg off the meeting due to rather severe illness.

Thankfully, Eric was kind enough to ensure that the Section was able to meet for the first time of the year and asked Andy Teipen and Emily Frame of to fill in. They spoke on “Acoustic Treatment: Why & How.” Eric will present his original topic “Bass Traps – What They Are, How They Are Made, And How To Use Them” in the year to come.

Emily Frame & Andy Teipen. Click for more pictures.

We opened the meeting by discussing the Section’s history and our proposed schedule for the remainder of the year. As well, we discussed opportunities of involvement in the section and throughout the region.

In the presentation of “Acoustic Treatment: Why & How,” Andy and Emily discussed the broad acoustical needs of most users and what acoustical treatments (Auralex and otherwise) can be used to solve them.

As promised, we’ve begun recording our meetings for archival purposes and to allow for participation from members unable to travel. The recording from this meeting is available below for playback. As well, those who are so inclined can also download the recording for playback in their audio program of choice.

We’d like to thank all who were in attendance for our first meeting and hope to serve our section well in the coming year. As always, those with questions or concerns are encouraged to contact us.

Meeting Report — October 14, 2008

Date: October 14, 2008 7:00 PM
Topic: Roundtable Discussion of Recent FCC Wireless Microphone Regulations
Business: Discussion regarding possible future meeting topics.
Place: ESCO Communications, 8940 Vincennes Circle – Indianapolis, IN

This was a roundtable discussion by various members of the AES and the SBE regarding the current status of the change to Digital Broadcasting in February 2009 and its expected effect on the use of wireless microphones.

Meeting Report — November 7, 2007

Date: November 7, 2007 7:00 – 9:00 PM
Topic: REVIEW OF EARLY CONSTANT-DIRECTIVITY HORN DEVELOPMENT, TEF MEASUREMENTS, AND THE NEARFIELD PAPER
Place: ESCO Communications, 8940 Vincennes Circle – Indianapolis, IN

Don Keele has worked in the sound industry since his first engineering job, starting with Electro-Voice:1972, Klipsch: 1977, JBL:1978-1984, Crown International: 1985-1991, Audio Magazine: 1990-2000, and Harman since 2000. Keele has two BS degrees in EE and Physics, and graduated from Brigham Young Unversity with an MSEE with a minor in acoustics.

He worked on EV’s line of large-format constant directivity horns the HR9040, HR6040, and HR4020, JBL’s first series of Bi-Radial horns the 2360, 2365, and 2366, and JBL’s 4430 and 4435 Bi-Radial Studio Monitors, the 2404 tweeter, and the 4660 defined-coverage loudspeaker system. In 2005 he joined the Harman corporate R&D group working under Floyd Toole after working for four years at the Harman/Becker Automotive Systems division in the advanced technology development group. Currently he is back at Harman/Becker working in the “Simulation and Virtual Acoustics” group. He holds three patents and has five pending.

Don is a fellow of the AES and also got to kiss Charlize Theron in 2002 when he received a Scientific and Engineering Academy Award from the Academy of Motion Picture Arts and Sciences for work he did on JBL’s Cinema constant directivity loudspeakers.

Meeting Report — October 25, 2006

Date: October 25, 2006 Time: 7pm
Topic: Theatre Sound Design by David Budries, Chair of Sound Design Program, Yale University. (sponsored by the BSU student section)
Tour: See the Ball State University Music Technology studios.
Place: Ball State University, Music Instruction Building. 1809 W. Riverside Ave. Muncie IN. Room: 216 (on the second floor, go through the glass double doors adjacent to room 213~follow the signs to room 216.)

David Budries (Sound Designer) has New York design credits that include Ah, Wilderness; A Long Day’s Journey into Night; Our Country’s Good; Other People’s Money; Measure for Measure; And A Nightingale Sang; From the Mississippi Delta; Search and Destroy; End of the Day; Playland; and Marisol. His regional designs include productions at Center Stage, McCarter Theatre Center, Dallas Theater Center, La Jolla Playhouse, South Coast Repertory, Trinity Repertory Company, Alliance Theatre Company, Portland Stage Company, Westport Country Playhouse, and other regional theatres. Mr. Budries chairs the sound design program for the Yale School of Drama and is a freelance radio and music producer.