Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Plural or compound reproducers
Patent
1993-03-25
1999-06-01
Le, Huyen
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Plural or compound reproducers
381375, H04K 2500
Patent
active
059094982
ABSTRACT:
A transducer device includes a pair of transducers in the form of a speaker element and a microphone element mounted in a common housing that may be positioned and retained in the external auditory canal of the human ear thereby allowing the user to interface with communications apparatus. The housing is structured to acoustically isolate the microphone and the speaker sufficiently to avoid feedback, i.e., audio coupling. In one embodiment, this isolation is accomplished by a layer of acoustical damping material interposed between the two transducers. In another embodiment, isolation is accomplished by using a separate guide structure for each transducer. In a third embodiment, isolation is accomplished by a ported metallic plate interposed between the two transducers.
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Henson Michael R.
Le Huyen
Martin Timothy J.
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