Edgar Choueiri of Theoretica Applied Physics will discuss Spatial Audio and the BACCH SP products - A Zoom Event
Edgar Choueiri of Theoretica Applied Physics will discuss the basics of spatial hearing and techniques for enhancing Spatial Audio reproduction from two speakers. I will focus on the BACCH approach to crosstalk cancellation and go over the main functionality of BACCH4Mac and how it is used to enhance 3D imaging of two-speaker playback systems.
BACCH 3D Sound is a breakthrough audio technology (developed at Princeton University) that yields unprecedented spatial realism in speaker-based audio playback allowing the listener to hear, through only two loudspeakers, a truly 3D reproduction of a recorded sound field with uncanny accuracy and detail, and with a level of high tonal and spatial fidelity that is simply unapproachable by even the most expensive and advanced existing high-end audio systems.
BACCH 3D Sound relies on canceling an undesired artifact, called crosstalk, that occurs whenever stereo sound is played through loudspeakers, thus allowing the 3D cues which the brain needs to hear in 3D, and which exist in abundance in practically all well-made stereo recordings, to naturally reach the brain of the listener.
Edgar Choueiri is professor of Applied Physics at Princeton University where he teaches and directs two research laboratories, one focused on plasma propulsion for spacecraft, and the other on Spatial Audio. He is the author of more than 225 publications, and the recipient of many awards (including a knighthood and The Absolute Sound 2025 Innovator of the Year). He is the president of Theoretica Applied Physics, the developer of the multi-award-winning BACCH-SP and BACCH4Mac products.