Papers co-chair Agnieszka Roginska. New York (October 3, 2007)–While innovative technology, high profile engineers and platinum producers seem to capture the lion’s share of Exhibition Hall attention, the AES Convention educational program represents the organizations’ true foundation. “Papers co-chairs Agnieszka Roginska and Veronique Larcher have performed an invaluable service for the AES 123rd Convention,” emphasized Executive Director Roger Furness.
“The Papers Committee devoted countless hours to coordinating the review and selection of hundreds of worthwhile submissions. This year’s program will dramatically advance the wealth of knowledge already assembled by AES members over the past 59 years. I would be remiss,” Furness adds, “in not acknowledging Ms. Roginska’s tireless contribution which showed no sign of abating even though her 9th month of pregnancy and the Labor Day Weekend birth of her beautiful baby daughter.”
123rd AES Convention Paper Highpoints Include:
SHORT-TERM MEMORY FOR MUSICAL INTERVALS: Susan Rogers, Daniel Levitin, McGill University – Montreal – To explore the origins of sensory and musical consonance/dissonance, 16 participants performed a short-term memory task by listening to sequentially presented dyads. Professor Levitin, Keynote speaker for the 123rd AES Convention and Dr. Rogers will discuss the findings of this innovative experiment.
EXPERIMENT IN COMPUTATIONAL VOICE ELIMINATION USING FORMAT ANALYSIS: Presented by Durand R. Begault, Charles M. Salter Assoc, SF – Will explore the use of a computational approach to the elimination of a known from an unknown voice exemplar in a forensic voice elimination protocol.
MULTI-SOURCE ROOM EQUALIZATION; REDUCING ROOM RESONANCES: Presented by John Vanderkooy, University of Waterloo – Waterloo, Ontario, Canada – Details his investigation into room equalization, including studies of a common 5.0 loudspeaker setup, and stereo configurations with two or more standard subwoofers. Dr. Vanderkooy will also define a measurable room parameter that quantifies the deleterious effects of low-frequency room resonances.
A LOW COMPLEXITY PERCEPTUALLY TUNED ROOM CORRECTION SYSTEM: Presenter James Johnston, Serge Smirnov, Microsoft Corporation – Redmond, WA.- In many listening situations using loudspeakers, the actualities of room arrangements and the acoustics of the listening space combine to create a situation where the audio signal is unsatisfactorily rendered from the listener’s position. This paper describes an innovative room-correction algorithm that restores imaging characteristics, equalizes the first-attack frequency response of the loudspeakers, and improves the listeners’ experience.
A HIGH LEVEL MUSICAL SCORE ALIGNMENT TECHNIQUE BASED ON FUZZY LOGIC AND DTW: Bruno Gagnon, Roch Lefebvre, Charles-Antoine Brunet, University of Sherbrooke – Sherbrooke, Quebec – This paper presents a method to align musical notes extracted from an audio signal with the notes of the musical score being played. Building on conventional alignment systems using Dynamic Time Warping (DTW), the proposed method uses fuzzy logic to create the similarity matrix used by DTW. Like a musician following a score, the fuzzy logic system uses high level information as its inputs, such as note identity, note duration, and local rhythm.
Papers Co-Chair Veronique Larcher quantifies the distinction between Posters and Papers in terms of size. “Papers are presented as lectures before group as large as 100, while Posters promote interactive discussion between 15 to 25 working professionals. Each of our presenters is a highly respected expert in their field,” she adds. “The 123rd AES Convention Papers and Posters Program might be considered an advanced university level course in applied and theoretical acoustics.”
Poster Highlights Include:
SPECIAL HEARING AID FOR STUTTERING PEOPLE: Piotr Odya, Gdansk University of Technology – Gdansk, Poland; Andrzej Czyzewski, Gdansk University of Technology – Gdansk, Poland, and Excellence Center, PROKSIM, Warsaw, Poland – Recent progress in digital signal processor developments has led to the development of a subminiature device combining speech and a hearing aid. Despite its small dimensions, the device can execute quite complex algorithms and can be easily reprogrammed. The paper addresses issues related to the design and implementation of algorithms applicable to both speech and hearing aids.
ROUND ROBIN COMPARISON OF HRTF SIMULATION RESULTS: Raphaël Greff, A-Volute – Douai, France; Brian F. G. Katz, LIMSI – CNRS – Orsay, France – Variability in experimental measurement techniques of the HRTF is a concern that numerical calculation methods may help avoid. While not prone to the same errors as physical measurements, other problems appear that cause variations. This paper addresses preliminary results based on an acquired geometrical model.
SHARING ACOUSTIC SPACES OVER TELEPRESENCE USING VIRTUAL MICROPHONE CONTROL: Jonas Braasch, Daniel L. Valente, Rensselaer Polytechnic Institute – Troy, NY, Nils Peters, McGill University – Montreal – This paper describes a system used to project musicians in two or more co-located venues into a shared virtual acoustic space. Their music is captured using spot microphones, and then
projected at the remote end using spatialization software based on virtual microphone control (ViMiC) and an array of loudspeakers.