Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having bi-directional transducer
Patent
1996-06-06
1998-08-04
Kuntz, Curtis
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Having bi-directional transducer
381188, 379420, 379428, 379433, H04R 2500, H04M 100, H04M 900
Patent
active
057906793
ABSTRACT:
A wireless terminal for personal communication systems is provided with selective handsfree or handset receive mode of operation utilizing a single transducer. The transducer is mounted within a specially designed enclosure having front and back chambers each with strategically located acoustic ports for shaping the frequency response and providing good quality audio in each mode. Electronic equalization may be employed to further adjust the amplifier gain and shape the frequency response for dual mode operation.
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Forrester Christopher Michael
Hawker Larry Edward
Schyndel Andre John Van
Barnie Rexford N.
Fortin Jean-Pierre
Kuntz Curtis
Northern Telecom Limited
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