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Class Information
Number: 381/337
Name: Electrical audio signal processing systems and devices > Electro-acoustic audio transducer > Having acoustic wave modifying structure
Description: Subject matter having a passive element for changing a characteristic of audible sound vibrations produced or detected by an electro-acoustic transducer.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7606383 |
Curved line array loudspeaker |
Oct. 20, 2009 |
| 7606384 |
Spiral line array loudspeaker |
Oct. 20, 2009 |
| 7536024 |
Loudspeaker |
May. 19, 2009 |
| 7506721 |
Convertible folded horn enclosure |
Mar. 24, 2009 |
| 7483543 |
Stereo imaging manifold and method for use in a portable electronic device |
Jan. 27, 2009 |
| 7466837 |
Diffuser and speaker using the same |
Dec. 16, 2008 |
| 7450733 |
Speaker with externally mounted acoustic extension |
Nov. 11, 2008 |
| 7433483 |
Narrow profile speaker configurations and systems |
Oct. 7, 2008 |
| 7426280 |
Electroacoustic waveguide transducing |
Sep. 16, 2008 |
| 7392880 |
Dual range horn with acoustic crossover |
Jul. 1, 2008 |
| 7379556 |
Speaker device |
May. 27, 2008 |
| 7356155 |
Device and method for assisting vocalists in hearing their vocal sounds |
Apr. 8, 2008 |
| 7333626 |
Arbitrary coverage angle sound integrator |
Feb. 19, 2008 |
| 7319772 |
Speaker device for improving mid/high-range frequencies |
Jan. 15, 2008 |
| 7269270 |
Standing wave reducing |
Sep. 11, 2007 |
| 7266211 |
Speaker grill |
Sep. 4, 2007 |
| 7260364 |
Reverse mounted micro-speaker assemblies and mobile terminals including the same |
Aug. 21, 2007 |
| 7252176 |
Reflex-ported folded horn enclosure |
Aug. 7, 2007 |
| 7230825 |
Speaker grill-air vent combinations for a portable computer |
Jun. 12, 2007 |
| 7207413 |
Closed loop embedded audio transmission line technology for loudspeaker enclosures and systems |
Apr. 24, 2007 |
| 7178629 |
Electroacoustic public address unit with acoustic horn or waveguide |
Feb. 20, 2007 |
| 7177437 |
Multiple aperture diffraction device |
Feb. 13, 2007 |
| 7151836 |
Speaker apparatus and sound reproduction apparatus |
Dec. 19, 2006 |
| 7142680 |
Multiple waveguide coaxial ceiling loudspeaker |
Nov. 28, 2006 |
| 7134523 |
System for integrating mid-range and high-frequency acoustic sources in multi-way loudspeakers |
Nov. 14, 2006 |
| 7130438 |
Acoustic enclosure for single audio transducer |
Oct. 31, 2006 |
| 7103193 |
Bandpass woofer enclosure with multiple acoustic fibers |
Sep. 5, 2006 |
| 7095868 |
Phase plug with optimum aperture shapes |
Aug. 22, 2006 |
| 7062051 |
Acoustic device |
Jun. 13, 2006 |
| 7010138 |
Loudspeakers |
Mar. 7, 2006 |
| 6973994 |
Apparatus for increasing the quality of sound from an acoustic source |
Dec. 13, 2005 |
| 6931143 |
Thin enclosure electroacoustical transducing |
Aug. 16, 2005 |
| 6870941 |
Dipole radiating dynamic speaker |
Mar. 22, 2005 |
| 6834744 |
Speaker system |
Dec. 28, 2004 |
| 6836552 |
Panel loudspeakers |
Dec. 28, 2004 |
| 6771787 |
Waveguide electroacoustical transducing |
Aug. 3, 2004 |
| 6754403 |
Acousto-optic add/drop multiplexer with retro-reflection and wavelength selective optical cross-connect |
Jun. 22, 2004 |
| 6751330 |
Speaker system |
Jun. 15, 2004 |
| 6738483 |
Overhead loudspeaker systems |
May. 18, 2004 |
| 6718076 |
Acousto-optic tunable filter with segmented acousto-optic interaction region |
Apr. 6, 2004 |
| 6700984 |
Non-linearly tapering transmission line speakers |
Mar. 2, 2004 |
| 6650760 |
Loudspeaker |
Nov. 18, 2003 |
| 6625291 |
Diffused resonance loudspeaker enclosure method |
Sep. 23, 2003 |
| 6574344 |
Directional horn speaker system |
Jun. 3, 2003 |
| 6438246 |
Speaker apparatus |
Aug. 20, 2002 |
| 6404894 |
Packaging |
Jun. 11, 2002 |
| 6393131 |
Loudspeaker |
May. 21, 2002 |
| 6389144 |
Sound field equalizing apparatus for speaker system |
May. 14, 2002 |
| 6343133 |
Axially propagating mid and high frequency loudspeaker systems |
Jan. 29, 2002 |
| 6332029 |
Acoustic device |
Dec. 18, 2001 |
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