License-Ready Tech
BACCH® 3D Sound (SP)
An advanced patented crosstalk cancellation technology, developed at Princeton University that yields vivid and accurate 3D imaging from binaural and regular stereo audio over a pair of loudspeakers. This is the same technology at the heart of the highly acclaimed high-end audio processor, the BACCH-SP, developed by our sister company, Theoretica Applied Physics.
Unlike other crosstalk cancellation technologies, BACCH® 3D Sound produces no tonal distortion and can be individualized to the listener’s head and ear shape, the particular response of the loudspeakers, and the listening geometry through a quick and easy calibration using Theoretica’s in-ear BACCH-BM binaural microphone. It can also be applied generically purely based on the approximate angle of the speakers.
3D audio through loudspeakers is no longer confined to a tight listening sweet spot. BACCH-dSP’s state-of-the-art head-tracking technology assures real-time dynamic sweet spot adjustment for seamless 3D audio over a wide range of listener locations.
BACCH® 3D Sound has been licensed in products ranging from high-end audio processors to portable consumer bluetooth speakers such as the millions of Jamboxes sold by Jawbone, with BACCH®3D Sound branded as LiveAudio .
To learn more about BACCH® 3D Sound, see this FAQ page and the press reviews .
BACCH®-HP
The recently patented BACCH-HP headphones technology, which resulted from a 4-year research project at Princeton University’s 3D3A Lab, allows binaural audio to be reproduced through headphones with the following main features:
The 3D image is much more fully head-externalized than regular binaural audio.
Unlike regular binaural audio, head-externalization with BACCH-HP works equally well for all listeners.
Rotational head tracking fixes the 3D image in space, which is critical for enhancing the perception of a realistic audio image outside the head.
Advanced proprietary equalization methods are used to optimize headphones playback for BACCH-HP.
BACCH®-X
A groundbreaking technology that uses advanced phased arrays, head tracking algorithms and dynamic parallel convolutions to deliver simultaneous sweet spots of 3D Sound for multiple moving listeners through tightly-focused beams of sound. Unlike ultrasonic-based sound beaming technologies, which have poor mid and low frequency response, BACCH®-X is a full-band audio technology suitable for hifi applications.
Sound Stage Control
Any array of 7+ speakers, even positioned around a room or a car cabin, can be used to create a clean stereo image in front of the listener. This clean stereo image is compatible with a BACCH speaker filter, generating a BACCH 3D soundstage around the listener.
Personal Sound Zones
Any array of 8+ speakers, including in a car or on a soundbar, can created separate listening zones with 30dB of separation for users sitting right next to each other. One listener can choose completely different content from another, including silence.
BACCH® Spatial Audio Tools
BACCH Labs licenses a series of advanced tools for spatial audio applications, including augmented and virtual reality applications. These tools include algorithms for head tracking, high-resolution impulse response measurements, headphones equalization, sliding convolvers, robust FIR interpolation, 3D mixing, efficient synthesis of early reflection and room reverb, and Higher-Order Ambisonics (HOA)-to-binaural rendering. BACCH Labs is also a licensed supplier of Theoretica’s industry-leading BACCH-BM Pro binaural microphone, BACCH4Mac package, and BACCH-dSP application.
