Electrical audio signal processing systems and devices – Binaural and stereophonic – Hearing aid
Patent
1996-02-01
1998-03-24
Isen, Forester W.
Electrical audio signal processing systems and devices
Binaural and stereophonic
Hearing aid
381 90, 381188, 381159, 181172, 181154, H04R 102, H04R 502
Patent
active
057321400
ABSTRACT:
An audio speaker system has at least one expandable speaker enclosure which comprises a rigid upper wall, a speaker mounted to the upper wall and a rigid bottom wall. One edge of the bottom wall is pivotally attached to a corresponding edge of the upper wall. Flexible side walls interconnect the upper and bottom walls so as to form a substantially closed speaker enclosure, the side walls being configured for enabling the enclosure to be varied between a first, collapsed configuration for carrying and a second, expanded configuration having a predetermined optimum enclosed volume for sound quality when in use. A stereo pair of such enclosures have provisions for detachable attachment to the bottom of a keyboard portion of a notebook-type computer. Variations are described in which the stereo pair of expandable disclosures are integrated, in one case, into the keyboard portion, and in another case, into the display portion of a specialized notebook-type computer.
REFERENCES:
patent: 4591020 (1986-05-01), Hruby, Jr.
patent: 4601361 (1986-07-01), Nakada
Appel Gary
Isen Forester W.
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