Local Event – EXPO – January 17th

The Technology Solutions EXPO – presented by Sensory Technologies

Coming up is a local event that may be of interest to many of our Central Indiana AES Section members and friends – The Technology Solutions EXPO, presented by Sensory Technologies.
Date: January 17, 2017
Time: 8am to 4pm EST
Dallara Indycar Factory
1201 Main Street
Speedway, IN 46224
Admission: Free

Surround Sound: Invented in Indiana – Jan. 10, 2017

An Evening with Peter Scheiber

When:  Tuesday, January 10, 2017, 7:30 PM

Where:  Jacobs School of Music, Musical Arts Center (MAC), Room 438

               101 N. Jordan Avenue, Bloomington, IN 47405

Did you ever wonder who, where, or when “surround sound” was developed?  Join us for this very special opportunity to hear a detailed history of surround sound with AES Life Fellow Peter Scheiber.  Here’s a preview:


Peter Scheiber was named a Fellow of the AES in 1972, but demonstrated an interest in audio and music from his early years in school.  When he was only fifteen, his ever-evolving home audio system included an extra overhead speaker, which derived its signal from a reverberation chamber he had constructed in his basement using a crystal microphone and loudspeaker.

As an undergraduate at Oberlin College, Peter switched from a planned major in physics to a major in music; during two summers, he studied bassoon on scholarship at the Boston Symphony’s Berkshire Music Center at Tanglewood.

Bitten by the “Toscanini bug,” he went to Chicago in 1957 at age 22 to study with Leonard Sharrow, principal bassoon of the Chicago Symphony, and former principal of the NBC Symphony under Toscanini.  Following a year as principal bassoon in the Ottawa Philharmonic, Peter moved to the Dallas symphony, where he remained for six years.  After a two-year stint as senior lab technician in instrumentation at Texas Instruments, which reconfirmed that music was indeed his first love, he began graduate studies at the Indiana University School of Music, where he built and filed for patents on “four-channel” matrix encoders and “logic” decoders.

In 1972, Electro-Voice and CBS were licensed for their respective “quadraphonic” systems under this technology.  In 1973, in his hotel suite at the AES Convention in Los Angeles, Peter demonstrated his own decoder for SQ-encoded program, using cancellation logic in four independent frequency bands, instead of the single-band, gain-riding technique then being implemented by CBS.

About a year later, at an informal “shoot-out” held at CBS Laboratories in Stamford, CT, the attendees, who included SQ engineering-team leader Dan Gravereaux, and Larry Keyes, chief quadraphonic mixer for CBS Records, declared Peter’s new single-band decoder, which used attack-sensing, continuously-variable-speed logic, to be superior in positional stability and sound quality to CBS’s own, never-marketed cancellation decoder, the “paramatrix.”  In 1977, a CBS-sponsored demonstration of the Scheiber SQ-optimized prototype “360° Spatial Decoder” moved Leonard Feldman to write, in Rolling Stone, separation was absolute and complete (you could even stand outside the area of the four loudspeakers and still distinguish easily among the sounds coming from the different speakers).  Nor was there any sense of ‘pumping’ or ‘breathing’ so common to earlier full-logic decoders.

In late 1983, Peter was approached by Jim Fosgate, who was looking for an alternative to the “T.A.T.E.” directional enhancement chips used in his logic decoders, at that time optimized for CBS’s “SQ” matrix.  Peter provided Jim with a new decoder circuit, and, through 1989, made numerous trips to Utah for design sessions and related technology transfer.

Features of the circuit included a “Panorama” mode providing surround reproduction of two-channel music program, years later to be implemented under the same Scheiber-coined name in Pro Logic IITM.  The first commercial result was the 1985-86 Fosgate Model 3601 “360º Space Matrix,” named after the 1977 Scheiber “360° Spatial Decoder.”  The 3601 was probably the first  home-use logic decoder for Dolby Surround.

Also in 1983, Peter licensed Dolby Labs to use his matrix/logic technology in motion picture soundtracks and theaters.  The following year, Peter granted to Dolby a sublicensing right for non-logic, basic-matrix, consumer decoders (the only kind they were interested in at that time).   In 1986, the consumer-use right was amended to add logic, and in 1987, Pro LogicTM was introduced.

In 1988, Scheiber and Fosgate signed a new agreement with a “Co-operation” provision under which the parties would co-operate toward realization of Scheiber’s designs for a Dolby-compatible matrix system with improved logic.  In 1990, Fosgate left the relationship with Scheiber.  In 2000-01, Dolby introduced Pro Logic IITM, which it has described as a dramatically improved, updated matrix surround system, based on the principles used to develop the original Pro Logic decoding back in the 1980s, and featuring “Panorama” surround reproduction of two-channel music program.

In 2003, Dolby, Fosgate and Scheiber shared an Emmy Award for Development of Surround Sound for Television.  The May, 2004 issue of the Journal of the Audio Engineering Society, reporting that event, noted that Scheiber’s continuously-variable-speed logic and stereo surrounds were later reintroduced in Pro Logic II.

Live Sound for a Major Musical Show and a Holiday Dinner – Dec. 19th

When/Where:  Monday, December 19, 2016, 4:00 PM @ Hilbert Circle Theater followed by Dinner at Shapiro’s ~ 5: 30 PM.

Join us for a hands-on talk with Alan Alford, audio engineer for the Indianapolis Symphony Orchestra, as he explains the details and challenges for the ISO’s 31st annual Yuletide musical production.  Among the challenges of this production is the handling of over 40 wireless microphone systems.  Our time with Alan will be from 4:00 – 5:00 PM, in the main house of Hilbert Circle Theater.

There are two Yuletide productions that day, one at 2:00 PM and the other at 8:00 PM.  Josh Kaufman (from The Voice) is this year’s host.  You may wish to attend one of these (your option) in order to have a greater appreciation for the magnitude and complexity of the task of handling live sound for this major production.  Because of unknown schedules, we are not holding a block of tickets; that is, you must purchase your own ticket(s), available online at www.indianapolissymphony.org.  HCT is located at 45 Monument Circle, Indianapolis.  Parking is available in the adjacent garage (off N. Pennsylvania Street) or nearby Circle Center.

Immediately following we will proceed to the nearby Shapiro’s, 808 S. Meridian, for a holiday dinner.  You cost for the dinner will be only $5.00, with the balance being subsidized by our Section.  Our treasurer, Phil Hodson, will take your $5 share before paying the total bill.
Eventbrite - Central Indiana AES December Meeting
Eventbrite - Dinner at Shapiro's

Azmyth Recording Studios & School of Music Technology Tour


Date: Thursday, April 14, 2016, 7:00 – 9:00 PM

Location: Azmyth Recording Studios, 5210 E. 65th Street, Indianapolis, Indiana 46220

Talk & Tour: Azmyth Recording Studios www.azmythrecording.com & School of Music Technology – the oldest operating recording studio facility in Indiana. Ryan Adkins and staff will present a current look at the local music recording business and a tour of their facilities.

** Click on the following RSVP if you plan to attend – the earlier the better!

Eventbrite - AES - April 14 at Azmyth Recording Studios

Talk & Tour:  Azmyth Recording Studios & School of Music Technology – the oldest operating recording studio facility in Indiana.  Ryan Adkins and staff will present a current look at the local music recording business and a tour of their facilities.
Thursday, April 14, 2016, 7:00 – 9:00 PM
5210 E. 65th Street
Indianapolis, Indiana 46220



Wireless Mics for a Major Theater Production – April 2, 2016

Date: Saturday, April 2, 2016, 12:00 PM – 2:00 PM

Location: IU MAC (Musical Arts Center), 101 N. Jordan Avenue, Bloomington, IN 47405

Note:  Start time for this meeting is Noon

Guest audio engineer Bryan Delaney will discuss techniques and considerations in using wireless microphones for the large- scale production of the musical Oklahoma at IU’s Opera Theater.

Bryan Delaney is a sound designer and engineer based out of Greenville, SC. He is a 2006 graduate of the Indiana University Jacob’s School of Music, earning his Bachelor’s of Science degree in Recording Arts. Specializing in theatrical sound design and concerts, he has designed and mixed in many halls throughout the country. His regional credits include shows for: The Peace Center for the Performing Arts, Virginia Opera, Flat Rock Playhouse, Walnut Street Theatre, American Repertory Theater, North Shore Music Theatre, Milwaukee Repertory Theatre, Stoneham Theatre, House Theatre of Chicago, Lookingglass Theatre Company, and Steppenwolf Theatre Company. In 2009, he took over as the Production Sound Engineer on the revival tour of “Sweeney Todd.”

Bryan is currently the Head of Audio at The Peace Center for the Performing Arts in Greenville, SC. The Peace Center is a multi-venue performing arts facility that hosts both national and international touring acts, as well as many local resident companies. The flagship of the facility is its 2100 seat concert hall; additional performance venues include the smaller 500-seat Gunter Theatre; 1300 seat outdoor amphitheater; Genevieve’s Bar and Lounge; and multiple studio and educational rental facilities. The programming at The Peace Center includes everything from 1st National Broadway tours to live televised Presidential debates, and everything in between. Bryan oversees the daily operations of the sound department and advises on capital upgrades and improvements. In his spare time, he enjoys designing shows for regional theaters and mixing concerts. He is a proud graduate of IU and is excited to return and share this experience with the faculty and students!

** Click on the following RSVP if you plan to attend – the earlier the better!

Eventbrite - AES - April 2 at IU MAC

Revisiting Clowes Hall: Upgrades for Sound, Acoustics, Noise Performance


Date: Wednesday, January 20th, 2016. 6:45 PM

Location: Clowes Hall (Butler University campus, 46th Street) Indianapolis.

Parking: Plenty of parking is available in a brand new garage directly behind Clowes Hall and the Schrott Center. Enter off Sunset Ave. just north of 46th Street.

Entrance: Please enter via the northeast door (closest to the parking garage) – there will be a sign on door. We will meet on stage.

Note:  Start time for this meeting is 6:45 PM

Clowes Memorial Hall, celebrating 50 years, is a multi-purpose performing arts facility that serves Butler University and the greater Indianapolis community. It was once THE Indy Concert Hall and hosted Eric Clapton and Cream in 1967, as well as the ISO. Its programming has migrated over 50 years from symphonic originally, to more pop and road show use. This necessitated changes in acoustics and sound systems as a phased plan, now completed. Clowes Hall is now one of only a few performing arts centers in the region with a complete “LCR” (left/center/right) theatre sound system. It is optimized with acoustics driving the design. A new L-Acoustics array was specified and installed.

Our presenter will be David Wright of Wright Consulting Associates, now a part of a national engineering firm, KJWW Engineering Inc. David will review how design steps were prioritized with budgets and how acoustics were addressed before any sound system or product could be designed. If time allows, we also plan on doing a relative calibration for attendees’ SLM meters, as a field exercise. Bring your portable measuring mic and calibrators if you have one!

Our host at Clowes Hall will be Ernie Yezzi, Sound Technician/Technical Stage Crew.

** Click on the following RSVP if you plan to attend – the earlier the better!

Eventbrite - AES - January 2016 Meeting at Clowes Hall

Postal Recording Studio Tour – June 25, 2015



LOCATION:  1144 S Belmont Ave, Indianapolis, IN 46221

This was a rare opportunity to see a fully-functional analog and digital recording studio in operation.  Host Jake Robinson gave us a tour of Postal Recording and, with the assistance of some local musicians, provided an opportunity to compare the sound of analog and digital technologies. 


Networking and Digital Audio Transports – July 23, 2015

DATE: RESCHEDULEDTHURSDAY, July 23, 2015. 7:00 – 9:00 PM

LOCATION:  Esco Communication, 8940 Vincennes Circle, Indianapolis, IN 46268

TOPIC: Networking and Digital Audio Transports

PRESENTER: Bradford Benn, Harmon Professional


During our next meeting, Bradford Benn will review and compare protocols and application examples for networking and digital audio transports. 

  • AES-3, AES-67, AVB, CobraNet, Dante, BLU, Qlan

** Please RSVP for this new date…even if you had RSVP’d earlier.  (RSVP is for head count only – the Meeting is free and open to all.)

Bradford Benn is a Vertical Market Manager for Harman Professional. He was heavily involved in the development of HiQnet System and Audio Architect™software, the evolution of the HiQnet™ protocol, and the development both of Ethernet AVB products and the protocol. He has been involved with such network intensive projects as City Center in Las Vegas, Lucas Oil Stadium, and the MetLife Stadium to name just a few. In addition to his responsibilities at Harman, Bradford serves as a co-instructor for the Syn-Aud-Con Digital training seminars as well as being an InfoComm University Adjunct Faculty Member. His dual-background in IT and audio has uniquely prepared him for this role. When he isn’t working, he can often be found behind a camera taking photographs.

Acoustics – Before & After Measurements with Gavin Haverstick

DATE: THURSDAY, March 26th at 7:00 PM

LOCATION:  Sweeney Chapel at Christian Theological Seminary – 1000 W. 42nd St., Indianapolis, IN 46208

DIRECTIONS: Christian Theological Seminary is located on the Northwest corner of 42nd Street and Haughey Avenue. Sweeney Chapel is on the East side of the campus near Haughey Avenue. There is a parking lot entrance off of Haughey Avenue just North of where the Chapel is located.  


The campus at Christian Theological Seminary has long been revered for its unique architecture. Indiana University Professor and former Art & Architecture Critic for The Indianapolis Star Steven Mannheimer calls it “Undoubtedly, the best modernist structure of this scale and contemplative purpose in the city, and among the finest in the nation.” The building was designed in 1966 by acclaimed architect, Edward Larrabee Barnes (1915-2004), who also designed the Indianapolis Museum of Art and the IUPUI University Library among other works around the country.

Sweeney Chapel was added to the building in 1987. While beautiful and distinct, the Chapel was not performing well acoustically for its main application – speaking engagements. Gavin Haverstick from Haverstick Designs was hired to conduct acoustical testing in the Chapel and to develop a plan to improve the acoustical performance of the space. The Reverberation Time (RT60) at 500 Hertz (Hz) was measured to be 4.06 seconds in the empty Chapel. This is not conducive to intelligible speech, so a plan was put together to improve the acoustics of the space while trying to retain the modern feel of the room – a delicate balance.  

Gavin Haverstick will present a case study of the project. We will go through testing data that illustrates the results before and after the acoustical improvements were made in the room. We will discuss the acoustical consulting process, testing data, predictions and the implementation of acoustical materials.

This is a great opportunity to see and hear a fantastic piece of architecture here in Indianapolis while going through the process of renovating an existing space to improve the acoustics of a venue of this size.

Please RSVP at Eventbrite


Hinkle Fieldhouse Tour – Feb 12 2015


THURSDAY, February 12, 2015. 7:30 – 9:30 PM

LOCATION:  Hinkle Fieldhouse, Butler University campus – 510 W. 49th St. (Recommend heading Westbound from Meridian St. on 49th St.)

DIRECTIONS: Hinkle Fieldhouse is located on the Butler University campus at the corner of W. 46th Street & Boulevard Place. It’s Bldg. 22 on this map:  http://www.butler.edu/campus-map/ and here is a link to Google Maps:goo.gl/7zEGfT

PARKING – Main lot (south side of Fieldhouse).  Enter the Fieldhouse via Gate 4 (farthest east)

Note:  Start time for this meeting is 7:30 PM


Our next meeting promises to be a very informative one.  Hosts Joe Gentry and Russ Hoppel will review recently completed technical system upgrades at Hinkle Fieldhouse, including:

  • A new center court LED video scoreboard with supporting video production suite
  • New audio system – center scoreboard loudspeakers, audio infrastructure for new mix position and band position, Yamaha console and reconfigured and optimized signal processing for the entire sound system to all seats

The presentation also will include discussion of:

  • Design considerations and construction challenges
  • Addressing the challenge of overcoming a large, reverberant room and high crowd noise to maintain intelligibility
  • Optimizing signal processing for live band vs. media vs. talker
  • Managing feeds fir multiple broadcast – home and visiting radio, live TV, in-house video production

** Click on the following RSVP if you plan to attend – the earlier the better!