System and method for localization of virtual sound
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United States of America Patent
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Oct 23, 2001
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N/A
app pub date -
Jul 15, 1997
filing date -
Jul 15, 1997
priority date (Note) -
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Abstract
A system and method for providing improved virtual sound images. One or more spatial cues of an audio signal may be modulated within a described range to increase the clarity and perceived localization of a virtual sound image. Interaural time delay, interaural intensity difference and/or spectra may be varied at below the 'just noticeable level' to cause the virtual source location to move slightly relative to the listener's head. Such variation assists the listener's auditory system in filtering out ambiguous spatial cue information from the audio signal. The resulting virtual sound image has a larger sweet spot and is less sensitive to head movement.
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