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US5850457A
Expired / Lapsed
US
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Multi-dimensional sound reproduction system
Assignee: Individual
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Filing: 1996-07-01
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Granted: 1998-12-15
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Expires: 2016-07-01
Abstract
Abstract A unified loudspeaker system and method for use with a home theater stereo surround sound receiver. A plurality of binaural (dual) loudspeakers are housed in a single loudspeaker enclosure having a multiply-segmented face portion. Left and right loudspeakers are canted away from a center loudspeaker to provide more complete audio coverage of a defined listening area with audio channel separation. Six (6) equalized soundfields generated via five (5) surround sound channels from the loudspeaker enclosure configuration provide arrival times of the soundfields according to that of a live performance. Conventional two-channel stereo input sources may be combined by the system to provide desired soundfields. The preferred embodiment for a full dimensional sound field system contemplates the use of a Dolby Pro Logic AC-3 five or six channel receiver or the like as an input source. The conventional two channel stereo input sources may be combined by the system in a derived format to provide desired formats: Main Left (L), Main Right (R), Center (C), Surround Left (LS) and Surround Right (RS). A sub-woofer may also be provided.
Inventors
- 👤 Herbert I. Gefvert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:30
CPC Classifications
H; H04; H04R; H04R5/00; H04R5/02; H04R2205/00; H04R2205/022; H04R2205/024
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
298 words
A multi-dimensional sound reproduction network receiving and combining audio left channel and audio right channel signals for delivering plural signals to one or more loudspeaker enclosures housing a centrally located binaural voice coil loudspeaker directed into a defined listening area, a left-side located binaural voice coil loudspeaker directed to provide left-side audio coverage of the defined listening area with audio channel separation from said centrally located loudspeaker, and a right-side located binaural voice coil loudspeaker directed to provide right-side audio coverage of the defined listening area with audio channel separation from said centrally located loudspeaker, for creating multiple audio soundfields in the defined listening area responsive to the plural signals, said network comprising: means for receiving audio left channel signals including means for receiving left channel tweeter and left channel main signals; means for receiving audio right channel signals including means for receiving right channel tweeter and right channel main signals; means for deriving center channel signals from a combination of said received signals, delivering said derived center channel signals to the voice coils of the central loudspeaker; means for deriving a left surround effects channel from a combination of said received signals, delivering said received left and derived left surround effects channel signals to the voice coils of the left-side loudspeaker, said left surround effects deriving means comprises means for deriving an ambience left signal by subtracting the received right signal from the received left signal; and means for deriving a right surround effects channel signal from a combination of said received signals, delivering said received right and derived right surround effects channel signals to the voice coils of the right-side loudspeaker, said right surround effects deriving means comprises means for deriving an ambience right signal by subtracting the received left signal from the received right signal.
Claim 2
Dependent Claim
298 words
A multi-dimensional sound reproduction network receiving and combining audio left channel and audio right channel signals for delivering plural signals to one or more loudspeaker enclosures housing a centrally located binaural voice coil loudspeaker directed into a defined listening area, a left-side located binaural voice coil loudspeaker directed to provide left-side audio coverage of the defined listening area with audio channel separation from said centrally located loudspeaker, and a right-side located binaural voice coil loudspeaker directed to provide right-side audio coverage of the defined listening area with audio channel separation from said centrally located loudspeaker, for creating multiple audio soundfields in the defined listening area responsive to the plural signals, said network comprising: means for receiving audio left channel signals including means for receiving left channel tweeter and left channel main signals; means for receiving audio right channel signals including means for receiving right channel tweeter and right channel main signals; means for deriving center channel signals from a combination of said received signals, delivering said derived center channel signals to the voice coils of the central loudspeaker; means for deriving a left surround effects channel from a combination of said received signals, delivering said received left and derived left surround effects channel signals to the voice coils of the left-side loudspeaker, said left surround effects deriving means comprises means for deriving an ambience left signal by subtracting the received right signal from the received left signal; and means for deriving a right surround effects channel signal from a combination of said received signals, delivering said received right and derived right surround effects channel signals to the voice coils of the right-side loudspeaker, said right surround effects deriving means comprises means for deriving an ambience right signal by subtracting the received left signal from the received right signal.
Claim 3
Dependent Claim
46 words
A network in accordance with claim 1 comprising means for generating six (6) equalized soundfields defined as left, ambience left, center left, center right, ambience right and right soundfields via five (5) channels comprising said left, left surround effects, center, right surround effects and right channels.
Claim 4
Dependent Claim
29 words
A network in accordance with claim 1 comprising means for receiving said audio left surround, center and right surround channel signals from output terminals of a surround sound receiver.
Claim 5
Dependent Claim
33 words
A network in accordance with claim 1 wherein said main left and main right channels are provided to loudspeakers separate and external to said enclosure for greater audio coverage of the defined area.
Claim 6
Dependent Claim
19 words
A network in accordance with claim 1 further comprising a subwoofer external to said enclosure for enhanced bass response.
Claim 7
Dependent Claim
27 words
A network in accordance with claim 1 wherein said receiving means of said network may receive signals from multiple sources including radio, television, audio reproduction, multimedia systems.
Claim 8
Dependent Claim
52 words
A network in accordance with claim 1 wherein said receiving means and said deriving means of the multi-dimensional sound reproduction network are provided as an external conversion adaptor for receiving and combining the audio left channel and the audio right channel signals for delivering the plural signals to separate and external loudspeakers.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-12-14 | 2002-06-15 | 2002-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-12-14 | 2006-06-15 | 2006-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-12-14 | 2010-06-15 | 2010-12-15 | $7700.00 | Window Closed / Lapsed |