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Class Information
Number: 381/335
Name: Electrical audio signal processing systems and devices > Having non-electrical feature (e.g., mounting) > And loudspeaker > Plural diaphragms, compartments, or housings
Description: Subject matter in which there is a) more than one movable membrane within an enclosure, or b) an enclosure having more than one distinct volume, or c) more than one enclosure.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7515719 |
Method and apparatus to create a sound field |
Apr. 7, 2009 |
| 7496207 |
Cabinet for audio devices |
Feb. 24, 2009 |
| 7480389 |
Sound direction system |
Jan. 20, 2009 |
| 7471803 |
Integrated electro acoustic equipment with portable compact construction for sound applications |
Dec. 30, 2008 |
| 7454029 |
Loudspeaker array |
Nov. 18, 2008 |
| 7441630 |
Multi-driver speaker system |
Oct. 28, 2008 |
| 7415124 |
Low frequency surface array |
Aug. 19, 2008 |
| 7409071 |
Large-diameter arcuate speaker |
Aug. 5, 2008 |
| 7360626 |
Audio speaker with wobble free voice coil movement |
Apr. 22, 2008 |
| 7346315 |
Handheld device loudspeaker system |
Mar. 18, 2008 |
| 7343018 |
System of sound transducers with controllable directional properties |
Mar. 11, 2008 |
| 7329933 |
Silicon microphone with softly constrained diaphragm |
Feb. 12, 2008 |
| 7319766 |
In-wall loudspeaker |
Jan. 15, 2008 |
| 7319767 |
Line array electroacoustical transducing |
Jan. 15, 2008 |
| 7296653 |
Sound control apparatus |
Nov. 20, 2007 |
| 7298860 |
Rigging system for line array speakers |
Nov. 20, 2007 |
| 7261180 |
Rigging system for speaker cabinets |
Aug. 28, 2007 |
| 7260235 |
Line electroacoustical transducing |
Aug. 21, 2007 |
| 7225895 |
Audio speaker with wobble free voice coil movement |
Jun. 5, 2007 |
| 7218746 |
Retractable spa speaker system |
May. 15, 2007 |
| 7206427 |
Flat panel surface array |
Apr. 17, 2007 |
| 7201251 |
Modular speaker cabinet |
Apr. 10, 2007 |
| 7185735 |
Audio speaker with wobble free voice coil movement |
Mar. 6, 2007 |
| 7142827 |
Structural arrangement for a radio communication terminal incorporating a loudspeaker and an earpiece |
Nov. 28, 2006 |
| 7134523 |
System for integrating mid-range and high-frequency acoustic sources in multi-way loudspeakers |
Nov. 14, 2006 |
| 7133533 |
Passive acoustic radiating |
Nov. 7, 2006 |
| 7130432 |
Speaker mounting system and method |
Oct. 31, 2006 |
| 7113813 |
Mobile communication terminal and electro-acoustic transducer used for the same |
Sep. 26, 2006 |
| 7103193 |
Bandpass woofer enclosure with multiple acoustic fibers |
Sep. 5, 2006 |
| 7036781 |
Connecting unit for the angle-adjustable connection of at least two loudspeaker enclosures, and correspondingly connected loudspeaker enclosures |
May. 2, 2006 |
| 7021419 |
Speaker system |
Apr. 4, 2006 |
| 6968068 |
Foldable speakers |
Nov. 22, 2005 |
| 6961438 |
Loudspeaker system having wide-directional characteristics |
Nov. 1, 2005 |
| 6940990 |
Multi-channel audio center speaker device |
Sep. 6, 2005 |
| 6925190 |
Flush mount speaker mounting apparatus |
Aug. 2, 2005 |
| 6910549 |
Embedded multimedia speaker structure |
Jun. 28, 2005 |
| 6862360 |
Speaker system |
Mar. 1, 2005 |
| 6819767 |
Speaker unit and sound reproduction apparatus using the same |
Nov. 16, 2004 |
| 6810127 |
Clear sound side fill center fill |
Oct. 26, 2004 |
| 6798891 |
Speaker system |
Sep. 28, 2004 |
| 6782111 |
Multiple voicecoil and driver transducing |
Aug. 24, 2004 |
| 6778675 |
Speaker device |
Aug. 17, 2004 |
| 6758303 |
Electronic device having a multi-mode acoustic system and method for radiating sound waves |
Jul. 6, 2004 |
| 6739424 |
Speaker system |
May. 25, 2004 |
| 6721430 |
Musical bench |
Apr. 13, 2004 |
| 6719090 |
Speaker assembly |
Apr. 13, 2004 |
| 6704426 |
Loudspeaker system |
Mar. 9, 2004 |
| 6650758 |
Adaptive dual port loudspeaker implementation for reducing lateral transmission |
Nov. 18, 2003 |
| 6643379 |
Acoustical transducer for recreating a spatial sound stage and improved localization of original sounds sources |
Nov. 4, 2003 |
| 6628793 |
Speaker system |
Sep. 30, 2003 |
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