Theoretica Bacch-SP Adio Two Channel 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 pair of stereo loudspeakers. At the heart of the BACCH-SP is BACCH® 3D Sound technology developed at Princeton University, which purifies stereo audio signals from the crosstalk inherent in loudspeaker-based playback, allowing the listener's brain to receive the proper psychoacoustical cues that are needed to localize recorded sound sources realistically in 3D space. The BACCH-SP is the most advanced digital audio processor for music playback today as it incorporates, for the first time outside the laboratory, a number of advanced technologies that combine to offer what amounts to a virtual reality sound experience for the audiophile.

These technologies include:

• Individualized tonally-transparent crosstalk cancellation filters (called BACCH® filters) designed from quick calibration (impulse response) measurements made by the listener using calibrated binaural microphones placed in the listener's ears.
• Real-time adjustment of the 3D audio sweet spot through high-resolution tracking of the listener's head position (even in pitch darkness) using a 3D infrared camera and advanced custom-built head tracking software.
• 64-bit audio processing through a dedicated multi-core CPU running custom-built algorithms and optimized convolution engines.
• Wi-Fi control of all BACCH-SP functions through an intuitive iPad controller on a dedicated iPad that serves as the sole remote control.