Smyth SVS is an audio virtualization algorithm for use with standard stereo headphones. Its design goal was simply to reproduce the sound of loudspeakers, in a known environment, with a level of fidelity that would render the headphone presentation indistinguishable from that of the real loudspeakers. To achieve this, room impulse responses from each loudspeaker in a real listening room, captured using miniature microphones placed in the listener’s ears, are used to create a personalized virtual listening environment, forming the basis of the SVS algorithm. The algorithm also responds to head-tracking data to maintain the realism and accuracy of the virtual speakers over a limited range of head movements. As implemented in the Smyth Realiser, SVS can be readily used by professionals as a multi-channel surround monitoring tool for recording, post-production and broadcasting. It also has immediate applications in consumer soundtrack playback.
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