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Class Information
Number: 381/354
Name: Electrical audio signal processing systems and devices > Electro-acoustic audio transducer > Having acoustic wave modifying structure > Absorbing or attenuating element
Description: Subject matter wherein undesired sound intensity or vibration is lessened.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7368852 |
Electrically conductive matching layers and methods |
May. 6, 2008 |
| 7353907 |
Speaker enclosure for a wall mounted speaker system |
Apr. 8, 2008 |
| 7270215 |
Loudspeaker enclosure with damping material laminated within internal shearing brace |
Sep. 18, 2007 |
| 7263387 |
Speaker module design |
Aug. 28, 2007 |
| 7212644 |
Resonant frequency adjustment using tunable damping rods |
May. 1, 2007 |
| 7181039 |
Thermal chimney equipped audio speaker cabinet |
Feb. 20, 2007 |
| 7123735 |
Method and apparatus to increase acoustic separation |
Oct. 17, 2006 |
| 7111706 |
Enclosure and audio-visual apparatus comprising same |
Sep. 26, 2006 |
| 7062051 |
Acoustic device |
Jun. 13, 2006 |
| 7035419 |
Anti-resonant structure for speakers |
Apr. 25, 2006 |
| 7021419 |
Speaker system |
Apr. 4, 2006 |
| 7019621 |
Methods and apparatus to increase sound quality of piezoelectric devices |
Mar. 28, 2006 |
| 7011178 |
Sound transmitter and speaker |
Mar. 14, 2006 |
| 6870941 |
Dipole radiating dynamic speaker |
Mar. 22, 2005 |
| 6798891 |
Speaker system |
Sep. 28, 2004 |
| 6751330 |
Speaker system |
Jun. 15, 2004 |
| 6744903 |
Multiple damping device of speaker system for video display equipment |
Jun. 1, 2004 |
| 6704425 |
System and method to enhance reproduction of sub-bass frequencies |
Mar. 9, 2004 |
| 6665412 |
Speaker device |
Dec. 16, 2003 |
| 6658121 |
Headphone having an adjustable localization of auditory events |
Dec. 2, 2003 |
| 6560345 |
Microphone |
May. 6, 2003 |
| 6526150 |
Telephone loudspeaker enclosure |
Feb. 25, 2003 |
| 6470088 |
Vented loudspeaker enclosure with limited driver radiation |
Oct. 22, 2002 |
| 6373956 |
Method and arrangement for attenuating mechanical resonance in a loudspeaker |
Apr. 16, 2002 |
| 6243477 |
Audio system with partitioned input and output compartments |
Jun. 5, 2001 |
| 6215655 |
Drive-in ordering apparatus |
Apr. 10, 2001 |
| 6205229 |
Television having a device for preventing vibration of speaker |
Mar. 20, 2001 |
| 6130951 |
Speaker having multiple sound bodies and multiple sound openings |
Oct. 10, 2000 |
| 6014448 |
Fluid coupled subwoofer acoustic enclosure system |
Jan. 11, 2000 |
| 5991425 |
Low reflection/low diffraction treatment for loudspeaker transducer diaphragm |
Nov. 23, 1999 |
| 5974157 |
Small electroacoustic transducer |
Oct. 26, 1999 |
| 5943431 |
Loudspeaker with tapered slot coupler and sound reproduction system |
Aug. 24, 1999 |
| 5920637 |
Audio induced interference suppression apparatus for video display appliances |
Jul. 6, 1999 |
| 5905804 |
Pad structure for a speaker cabinet |
May. 18, 1999 |
| 5870485 |
Computer visual display monitor with integral stereo speaker and directional microphone and method for construction |
Feb. 9, 1999 |
| 5689574 |
Integral sound module for a modular monitor |
Nov. 18, 1997 |
| 5682418 |
Structure for mounting a microphone on a portable radio telephone |
Oct. 28, 1997 |
| 5673329 |
Omni-directional loudspeaker system |
Sep. 30, 1997 |
| 5638456 |
Piezo speaker and installation method for laptop personal computer and other multimedia applications |
Jun. 10, 1997 |
| 5455867 |
Speaker apparatus and television receiver using the same |
Oct. 3, 1995 |
| 5357578 |
Acoustic output device, and electronic apparatus using the acoustic output device |
Oct. 18, 1994 |
| 5347585 |
Sound attenuating system |
Sep. 13, 1994 |
| 5240221 |
Viscoelastic damping system |
Aug. 31, 1993 |
| 5197098 |
Secure conferencing system |
Mar. 23, 1993 |
| 5131052 |
Mid-range loudspeaker assembly propagating forward and backward sound waves in phase |
Jul. 14, 1992 |
| 5115474 |
Speaker system |
May. 19, 1992 |
| 5046104 |
Loudspeaker system |
Sep. 3, 1991 |
| 4979586 |
Acoustically shielded motorcycle helmet speaker enclosure |
Dec. 25, 1990 |
| 4967874 |
Microphone baffle apparatus |
Nov. 6, 1990 |
| 4966252 |
Microphone windscreen and method of fabricating the same |
Oct. 30, 1990 |
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