Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Plural or compound reproducers
Reexamination Certificate
2006-01-17
2010-12-14
Ni, Suhan (Department: 2614)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Plural or compound reproducers
C381S370000, C381S371000
Reexamination Certificate
active
07853034
ABSTRACT:
An audio headphone apparatus having ambient noise isolation properties for musicians and sound engineers which allows a user to substantially attenuate ambient noise levels and focus on the electronic audio presented to the headphones. The apparatus utilizes a unique layering of absorber materials with unique geometric shapes which in combination highly attenuate external ambient acoustic energy and control undesirable “boomy” bass response. The apparatus further utilizes a desiccant material within the ear cuff cover which helps to absorb perspiration or other moisture.
REFERENCES:
patent: 4523661 (1985-06-01), Scalzo et al.
patent: 5133016 (1992-07-01), Clark
patent: 6731771 (2004-05-01), Cottrell
Eason Matthew
Klug Kevin L.
Ni Suhan
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