Electrical audio signal processing systems and devices – Headphone circuits
Reexamination Certificate
2011-05-03
2011-05-03
Mei, Xu (Department: 2614)
Electrical audio signal processing systems and devices
Headphone circuits
C381S309000, C381S310000
Reexamination Certificate
active
07936887
ABSTRACT:
A listener can experience the sound of virtual loudspeakers over headphones with a level of realism that is difficult to distinguish from the real loudspeaker experience. Sets of personalized room impulse responses (PRIRs) are acquired for the loudspeaker sound sources over a limited number of listener head positions. The PRIRs are then used to transform an audio signal for the loudspeakers into a virtualized output for the headphones. Basing the transformation on the listener's head position, the system can adjust the transformation so that the virtual loudspeakers appear not to move as the listener moves the head.
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Fenwick & West LLP
Kim Paul
Mei Xu
Smyth Research LLC
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