Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having acoustic wave modifying structure
Reexamination Certificate
2006-10-17
2006-10-17
Mei, Xu (Department: 2615)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Having acoustic wave modifying structure
C381S352000, C381S354000, C379S432000, C181S290000
Reexamination Certificate
active
07123735
ABSTRACT:
A method and apparatus for reducing the acoustic coupling between a sound receiving transducer and a sound transmitting transducer is disclosed. A housing, wherein the receiving transducer and the transmitting transducer are mounted, is provided to increase the acoustic separation between the receiving transducer and the transmitting transducer. The housing has a surface, which may have an acoustic impedance condition, which is preferably resistive. The housing may further act as a barrier structure between the receiving transducer and the transmitting transducer.
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Ryan James G.
Stinson Michael R.
(Marks & Clerk)
Mei Xu
Mitchell Richard J.
National Research Council of Canada
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