BACCH-dSP is a standalone Mac application, at the heart of Theoretica's BACCH4Mac packages, for audiophile-level 3D Audio imaging through loudspeakers and headphones. Its Pro version has advanced tools for 3D audio mixing, production, and sound field navigation.
BACCH-dSP is the most advanced stereo 3D imaging and binaural audio processing tool available today, and is used by
BACCH-dSP incorporates many techniques, algorithms, and methods that have only recently evolved out of the research laboratory, and allows for the construction and rendering of stereo 3D audio images with breathtaking realism.
It is the result of many years of continuous development by Professor Edgar Choueiri, President of Theoretica Applied Physics and Director of Princeton University’s 3D Audio and Applied Acoustics Laboratory.
BACCH-dSP can be easily configured as a parallel processor for the leading DAW applications (e.g. ProTools, Logic Pro, Ableton Live, etc.) or as a standalone application for processing audio from audio files, and audio from audio file players (Roon, iTunes, JRiver, etc...) and streaming services (Tidal, Spotify, etc...).
The wide functionality of the BACCH-dSP includes the following main features:
(Available in the Audiophile, Audiophile+ and Pro editions)
A main feature of BACCH-dSP is BACCH 3D Sound, which is an advanced patented crosstalk cancellation technology, developed at Princeton University, that yields vivid and accurate 3D imaging from binaural (and regular stereo) audio over loudspeakers. This is the same technology at the heart of Theoretica’s highly acclaimed high-end audio processor, the BACCH-SP.
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 loudspeakers/listening configuration through a quick and easy calibration using the in-ear BACCH-BM binaural microphone.
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.
The advanced panel of BACCH-dSP allows further tailoring and optimization of the resulting BACCH filters
To learn more about BACCH® 3D Sound see our FAQ page and the press reviews.
(Available in the Audiophile+ and Pro editions)
The BACCH-dSP is the first product to use the newly developed BACCH-hp headphones technology, which resulted from a 4-year research project at Princeton University.
BACCH-hp filters, produced easily with the BACCH-dSP application, allow binaural audio to be reproduced through headphones with the following main features:
(Available in the Pro edition)
A central feature of BACCH-dSP is its powerful and intuitive 3D mixer: BACCH-3dm.
BACCH-3dm produces vivid and realistic binaural mixes (equivalent to binaural recordings produced through dummy heads or humans with in-ear microphones) from a collection of multiple audio sources such as the tracks of a multi-track recording.
BACCH-3dm’s visually striking graphical interface allows positioning multiple sound sources (each corresponding to a bus line from your DAW, a microphone signal, an audio file or a track from a multi-track file) precisely in 3D space. BACCH-3dm has the following additional features:
(Available in Pro edition)
The powerful BACCH-hoa module allows for up-to-fourth-order High-Order-Ambisonics-to-binaural rendering and 3D soundfield navigation using up to 20-speaker full dodecahedron virtual speaker system (in BACCH-3dm) and individualized HRTFs.
The BACCH-hoa module has the following main features:
(Available in Pro edition)
BACCH-dSP 9.5 adds two sub-modules to the BACCH-hoa main module: BACCH-hs^3 and BACCH-sme.
I. The BACCH-hs^3 (head-steered sound spotlight) sub-module features a new ground-breaking technology that relies an HOA microphone to create a "high-order beam" that can be steered anywhere in 3D space (using the BACCH-HT-Nav module described below) by simply looking in that direction, to significantly isolate sound sources in the beam from the background.
The BACCH-hs^3 sub-module has the following main features:
II. The BACCH-sme (stereo mic emulation) sub-module allows the accurate emulation of a variable-pattern pair of stereo mics for recording (or low-latency live monitoring) using a single HOA mic.
The BACCH-sme sub-module has the following main features:
(Available in the Intro, Audiophile, Audiophile+ and Pro editions)
Starting with version 6.0, BACCH-dSP includes the new u-BACCH module (which is the sole module in the BACCH4Mac Intro Edition). The u-BACCH module (where the “u” stands for universal) produces u-BACCH filters, which give 3D sound over loudspakers (with no head tracking) based on the user's input of quick tape measurements of the listening geometry.
u-BACCH filters come close to the performance of regular BACCH filters (the latter rely on acoustic measurements using the BACCH-BM in-ear mic) if the loudspeakers are well-matched in frequency and phase.
The u-BACCH module has the following features:
(Available in the Pro edition)
This new module, first introduced in BACCH-dSP 8.0, allows binaural content creators (e.g. mixing engineers, musicians, composers, AR/VR audio designers) to easily and intuitively design/draw complex trajectories in 3D space for the sources in the 3D mixer to follow.
The 3D Trajectory Designer module has the following main features:
(Available in the Pro edition)
Starting with version 8.2, BACCH-dSP includes the new HT-Nav module which allows 6 DOF navigation of the 3D soundfield in BACCH-3dm to be done naturally and intuitively using virtually any regular webcam or the infrared Track IR headtracking hardware) . Simply move your head in any of the 6 degrees of freedom and watch the dummy head in BACCH-3dm mimic every movement in real time, producing the HRTF-filtered binaural audio that corresponds exactly to that 3D perspective.
The HT-Nav module has the following features:
(Available in the Intro, Audiophile, Audiophile+ and Pro editions)
The BACCH-Xover module allows the user to quickly design a crossover network through an intuitive graphical interface.
The BACCH-Xover module has the following main features: