Theoretica Applied Physics - The Bacch-SP adio DAC and DSP

The BACCH® Stereo Purifier (BACCH-SP) is a state-of-the-art, high-definition,digital audio processor that yields highly realistic 3D sound imaging from a pairof stereo loudspeakers. At the heart of the BACCH-SP is BACCH® 3D Sound technology developed at Princeton University, which purifies loudspeaker-based stereo playback from the crosstalkthat degrades the 3D spatial cues that exist in most stereo recordings, allowing the listener’s brain to receive the proper psycho-acoustic cues that are needed to perceive the locations of recorded sound sources realistically in 3D space.  Technologies 1. Individualized tonally-transparent crosstalk cancellation filters (called BACCH® filters)designed from quick calibration (impulse response) measurements made by the listenerusing calibrated binaural microphones placed in the listener’s ears.2. Real time adjustment of the 3D audio sweet spot through high-spatial-resolution trackingof the listener’s head position (even in pitch darkness) and advance