AES New York 2013
Friday, October 18, 5:00 pm — 6:30 pm (Room 1E09)
T11 - Optimized Crosstalk Cancellation for Uncolored 3-D Audio from Loudspeakers: Recent Advances and Applications (A Master Class Event)Presenter:
Edgar Choueiri, Princeton University - Princeton, NJ, USA
This Master Class starts with a brief review of the three main methods for 3-D sound reproduction over loudspeakers: (1) Wave Field Synthesis, (2) Ambisonics, and (3) Binaural audio through loudspeakers (BAL). The main focus of the talk is on recent advances with the third method. I will show that crosstalk cancellation (XTC) allows BAL to deliver to the listener the necessary cues for real 3-D audio but that it inherently imposes an intolerably high spectral coloration on the audio. I will describe recent breakthroughs, which allow producing optimized XTC filters that impose no spectral coloration and then discuss the two other problems that have retarded the commercialization of XTC: the fixed and single sweet spot problems. I will show how the first problem is solved through advanced head tracking; and the second problem is solved using head tracking and phased array speakers, allowing the delivery of high-spatial-fidelity 3-D audio to multiple moving listeners in real listening rooms. Following the talk, there will be a demo with playback of recorded music and natural sounds.