Compact loudspeaker assembly

Details Compact loudspeaker assembly Compact loudspeaker assembly

1992-10-28

1994-11-29

Dwyer, James L.

Telephonic communications

Terminal

Having loudspeaking conversation capability

379428, 379429, 381159, H04M 100, H04R 2500

Patent

active

053697014

ABSTRACT:
A speakerphone comprises an upper housing member and a lower housing member that are joined together to enclose a loudspeaker, a microphone, and a printed wiring board having electronic components mounted thereon that cooperate in the operation of the speakerphone. The upper housing member includes a continuous sidewall that is molded into its underside and extends downwardly toward the printed wiring board. The sidewall surrounds a group of sound apertures that are also molded into the upper housing member. A loudspeaker is attached to the underside of the upper housing member in such a manner that it completely covers the sound apertures. A sealed enclosure within the speakerphone is formed by creating a seal between the sidewalls and the printed wiring board. A compliant gasket is illustratively used to create the seal. As a result, the frequency response of the loudspeaker is improved, and acoustic coupling between the loudspeaker and the microphone is reduced. The frequency response of the loudspeaker is further improved by inserting acoustically absorbent material, and by extending a tuned port, into the sealed enclosure.

REFERENCES:
patent: 2542922 (1951-02-01), Giannini
patent: 4375584 (1983-03-01), Muzumdar et al.
patent: 4451711 (1984-05-01), Jackson
patent: 4727583 (1988-02-01), Weber
patent: 4837837 (1989-06-01), Taddeo
patent: 4885773 (1989-12-01), Stottlemyer et al.
patent: 4937877 (1990-06-01), Pocock et al.
patent: 5121426 (1992-06-01), Baumhauer, Jr. et al.
patent: 5201069 (1993-04-01), Barabolak
patent: 5274701 (1993-12-01), Schmidt et al.

Affiliated with

Also associated with

Rating

Compact loudspeaker assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Compact loudspeaker assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compact loudspeaker assembly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-79254