The Duplex Panner, introduced at the 137th AES Convention, combines elements from binaural processing, Ambiophonics, the Haas effect, and other widening techniques, to develop a tool, that when listening on headphones, renders preferred stereo imagery over the unprocessed version of the same musical content. To understand if this algorithm can translate to loudspeaker systems without distortion, this paper examines the methodologies employed to achieve spatial panning and how the algorithm was built, how the processing affects the signal, and accordingly what its psychoacoustic implications may be. Through this detailed analysis, we conclude that, unlike other spatial panning techniques, the Duplex Panner is unlikely to be constrained by physical or psychoacoustic limitations in both headphone and loudspeaker systems.
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