Spherical loudspeaker for omnipresent sound reproduction

Details Spherical loudspeaker for omnipresent sound reproduction Spherical loudspeaker for omnipresent sound reproduction

2006-01-09

2011-11-29

Mei, Xu (Department: 2614)

Electrical audio signal processing systems and devices

Having non-electrical feature

Loudspeakers driven in given phase relationship

C381S336000, C381S335000, C381S386000, C181S153000

Reexamination Certificate

active

08068618

ABSTRACT:
A highly compact loudspeaker system having a spherical housing produces time and phase coherent sound waves in an omnipresent manner throughout a spatial listening environment. Within is a relatively low frequency sound driver and a relatively high frequency sound driver. The spherical housing has upper and lower hemispherical halves. The upper half is hollow and has holes through its surface over most of its surface. The lower half forms a sound compression propagation vacuum chamber for the low frequency driver. Mounted within the lower half is a crossover network conventionally connected to the sound drivers. Acoustic foam lines the interior wall surface of the lower half. The low frequency sound driver is mounted inverted, into the open end of the lower half, and then sealed air tight, at a lowered atmospheric pressure, while the high frequency sound driver is mounted upwardly, affixed to the backside of the low frequency driver.

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