Transaural Stereo is a technology suite of analog circuits and digital signal processing algorithms related to the field of sound playback for audio communication and entertainment.
It is based on the concept of crosstalk cancellation but in some versions can embody other processes such as binaural synthesis and equalization.
It is based on the knowledge of the four frequency-dependent transfer functions, the so-called ipsilateral and contralateral paths.
An early version was published as a Master's thesis at the University of Illinois in 1978 and later in the Journal of the Audio Engineering Society.
Cooper and Bauck, using methods to stabilize images and reduce the filter count, made an analog crosstalk canceller, a two-speaker spreader, and an eight-position binaural image synthesizer which doubled as a binaural pan pot in 1987–1989 using biquadratic analog filters in shuffler configurations.