Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Plural or compound reproducers
Patent
1995-03-17
1997-03-11
Kuntz, Curtis
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Plural or compound reproducers
381 24, 381205, H04R 2500
Patent
active
056109920
ABSTRACT:
A portable electronic device, such as a portable personal computer, has a ported speaker enclosure. The ported speaker enclosure has a speaker having a front portion and a back portion, where the front portion of the speaker forms a seal with a top surface of the portable electronic device, and the back portion of the speaker is contained in the ported speaker enclosure. An acoustic insulator, such as a gasket, is disposed between the top surface of the portable electronic device and the bosom surface of the ported speaker enclosure, thereby forming one chamber portion on one side of the acoustic insulator and a second chamber portion on the other side of the acoustic insulator. The acoustic insulator has a gap which allows for sound to travel from the first chamber portion to the second chamber portion. A first aperture in the top surface of the portable electronic device allows sound waves to emit from the front portion of the speaker. A second aperture in the top surface of the portable electronic device allows sound waves to emit from the back portion of the speaker through the first chamber portion and the second chamber portion. The sound waves from the front portion of the speaker and the sound waves from the back portion of the speaker are substantially in phase with each other when emitted from the first and second apertures.
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Barnie Rexford
Hewlett--Packard Company
Kuntz Curtis
Rose Curtis G.
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