Meeting Announcements

The Central Indiana Section of the Audio Engineering Society is pleased to announce a much anticipated event, our August 6, 2011 meeting, which features a concert systems tour of Conner Prairie with P. Alan Alford followed by an optional concert featuring the Music of Billy Joel and Elton John. All members are encouraged to attend and bring guests!

Because this is such a popular event we ask that you please RSVP whether you intend to attend the talk and the concert, or just the talk.

Also, because Conner Prairie is a popular historical site there are several important details worth mentioning.

• If you are interested in attending only the talk with Alan Alford no tickets are required and the parking area will be open. However, please RSVP. Simply tell anyone who asks that you’re meeting Alan Alford.

For those interested in staying for the concert as well…

• “Blanket” seating will be available. This means bring blankets and/or folding-style lawn chairs. At this date table seating is sold out.
• Bring your own food, beverages, etc.  Boy Scouts will be there to help carry heavy items.  Food is also available on-site, if desired.
• Gates open and food is available beginning at 6:00pm.
• Despite the 3 hours between the conclusion of the talk and the time the concert starts (8pm), it is not advisable to leave and return due to traffic.
• Group tickets are available to us at $17/person.  The tickets will be available at the will call window beginning around 5:45pm.
• General parking is free. Premier parking is $20 per carload and is accessible via the other gate.

To purchase tickets, call the main box office box office (317-639-4300) or Jeff Johnson (317-231-6788) who is the I.S.O. representative that deals in group sales. Simply give them the code 9690 which is set up to sell the tickets at $17 each. If anyone wishes to attend the concert but requires alternate payment or pickup arrangements, please call our Section Vice Chair Barrie Zimmerman (812-876-1133).

Meeting Information In Brief
Date: August 6, 2011
Time of Talk: 4:00pm
Time of Concert: 8:00pm
Location: Conner Prairie
13400 Allisonville Road, Fishers, IN 46038 (map)
Meeting Place: The lawn & table seating area in front of the pavilion. Please see the map above.

To stay up to date on section activities, be sure to follow us on Facebook or Twitter, and feel free to contact any member of the executive board to let us know your thoughts about the section.

The Central Indiana Section of the Audio Engineering Society is pleased to announce that Dr. Uwe J. Hansen will speak on Phase Considerations in Signal Processing at our May 2011 meeting.

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 will be held in the conference room of ESCO Communications Indianapolis office. We also hope to offer a live web stream of the event, however, those able are encouraged to attend. To ensure an accurate count for the meeting, please RSVP below.

Topic Abstract
The essential elements in describing a monochromatic wave are: amplitude, frequency, wavelength, speed of propagation, polarization and phase. Any interrelation between these characteristics is mostly determined by the interaction of the wave with the medium in which it travels. Thus dispersion relates to the frequency dependence of the propagation speed.

Amplitude, for example, is related to loudness in sound and brightness in light. Frequency or wavelength on the other hand relates to color in light and pitch in sound. Polarization considerations are limited to transverse waves such as electromagnetic waves or bending waves in structural vibrations. Phase identifies the location of a point along the propagating waves. Absolute phase measurements are not only difficult but generally not of interest.

Phase comparison, on the other hand is a powerful tool. The most obvious application is in active noise control, such as noise canceling head sets. Three applications of phase related signal processing techniques will be discussed: 1. Phase sensitive detection which is used to enhance signal to noise ratios in weak signals. 2. Optical holography, which relies entirely on phase comparison of coherent signals, and 3. Modal analysis, used to study normal mode vibration in structural systems.

About Dr. Hansen
With a Ph.D. in Low Temperature Solid State Physics from Brigham Young University, Dr. Uwe J. Hansen  joined the physics faculty at Indiana State University in 1968, after a post-doctoral fellowship at the US Naval Research Laboratory. Most of his work since then has been in the field of Musical Acoustics with emphasis on structural vibrations in musical instruments such as hand-bells, guitars, violins, piano sound boards, and Caribbean steel pans.

The tools he has used include holographic interferometry, modal analysis, and finite element analysis. He has lectured world-wide, has served as president of the Indiana Academy of Science, chairman of the Physics department at ISU and is currently serving as Executive Director of CSUI, and editor of the Proceedings of the IAS. As a fellow of the Acoustical Society of America he continues to do research and teach at ISU, though now retired.

To stay up to date on section activities, be sure to follow us on Facebook or Twitter, and feel free to contact any member of the executive board to let us know your thoughts about the section.

The Central Indiana Section of the Audio Engineering Society is pleased to announce that John Murray will speak on the new 2010 NFPA 72 fire code at our March 2011 meeting.

The new code includes many changes which affect Mass Notification and Emergency Communication Systems, and have significant implications for system integrators. This meeting is brought to us courtesy of Renkus-Heinz, Inc. and McFadden Sales.

Meeting Information
Date: March 17, 2011 at 7:00pm
Location: ESCO Communications Conference Room
8940 Vincennes Circle, Indianapolis, IN 46268 (map).

About John Murray
John has been an Audio Engineering Society member since 1980 is the principal and founder of Optimum System Solutions, a sound-systems consulting firm, dedicated to optimize existing systems before resorting to an equipment upgrade.  His 34-year career in the sound industry spans time as a system contractor; designing and installing systems, working for manufacturers; creating products and training dealers to use them, and founding an independent sales representative firm, ProSonic Solutions; representing dozens of manufacturers to the dealer base.  He is a long-time instructor for the NSCA, INFOCOMM and Syn-Aud-Con, has presented two published AES papers, and is the technical editor of Live Sound International magazine.

To stay up to date on section activities, be sure to follow us on Facebook or Twitter, and feel free to contact any member of the executive board to let us know your thoughts about the section.

The Central Indiana Section of the Audio Engineering Society is pleased to announce our first meeting of the year.

The meeting is scheduled for January 27th, 2011 at 7pm (view email announcement) where Eric Smith, Founder & President of Auralex Acoustics Inc., will discuss bass traps; what they are, why they are needed, how one is made and several real-world examples of the application.

It will be held in Auralex’ Indianapolis office in their home theater demonstration room. To ensure an accurate count for the meeting, please RSVP below.

Interested in getting involved in the section? Please attend our January meeting where we will lay out the schedule for the rest of the year.

Also, be sure to follow us on Facebook or Twitter, and feel free to contact any member of the executive board to let us know your thoughts about the section.

Meeting Information
Date: January 27th, 2011 at 7pm
Location: Auralex Acoustics, Inc.
6853 Hillsdale Court, Indianapolis, IN 46250 (directions)

The Central Indiana Section is pleased to partner with the Ball State University Student Section to provide live streaming of their meeting on November 21st at 4pm.

The meeting will be hosted within Soundhouse C of the Ball State Music Technology Studios in the Music Instruction Building and will feature Jeff Steeg, Studio Engineer and Audio Specialist at the Center for the Performing Arts in Carmel. Steeg will discuss the importance of preparation in both studio and live scenarios.

Those from the Central Indiana Section who wish to attend are more than welcome. However, as this is the inaugural live stream by the Section we invite all who are able to tune in.

The archived stream can be accessed be clicking the icon below and entering the required password. For questions, please contact us.

FAQ: To participate in the realtime chat you will need to log in with either a UStream, Facebook, Google, Yahoo, or OpenID account.

Update: Thanks to all who tuned in! We appreciate the patience shown as we dealt with a few technical issues in this first live stream, however we’re pleased to say this little experiment was a success and intended to offer more live streamed meetings in the future!

Password: aeslivestream

Photos of Jeff Steeg at the BSU AES