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Class Information
Number: 381/353
Name: Electrical audio signal processing systems and devices > Electro-acoustic audio transducer > Having acoustic wave modifying structure > Acoustic enclosure > Acoustic damping or attenuating resonator
Description: Subject matter in which a) the acoustic properties of a cavity are used to compensate for mechanical shock, i.e., to effectively cancel transmission of the shock to the transducer"s output, or b) the resonant property of a cavity is used to absorb or attenuate sound at a particular frequency or over a band of frequencies.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7570776 |
Speaker device and method of manufacturing the speaker device |
Aug. 4, 2009 |
| 7565178 |
Portable handset with integrated speaker |
Jul. 21, 2009 |
| 7526094 |
Normalization and calibration of microphones in sound-intensity probes |
Apr. 28, 2009 |
| 7515729 |
Speaker device |
Apr. 7, 2009 |
| 7447322 |
Speaker having a transparent panel |
Nov. 4, 2008 |
| 7440580 |
Room mode bass absorption through combined diaphragmatic and helmholtz resonance techniques |
Oct. 21, 2008 |
| 7353907 |
Speaker enclosure for a wall mounted speaker system |
Apr. 8, 2008 |
| 7350618 |
Multimedia speaker product |
Apr. 1, 2008 |
| 7315627 |
Sound-damping laminate for loudspeaker structure |
Jan. 1, 2008 |
| 7305098 |
Hearing device |
Dec. 4, 2007 |
| 7302075 |
Electronic device with loudspeaker |
Nov. 27, 2007 |
| 7270215 |
Loudspeaker enclosure with damping material laminated within internal shearing brace |
Sep. 18, 2007 |
| 7269270 |
Standing wave reducing |
Sep. 11, 2007 |
| 7263387 |
Speaker module design |
Aug. 28, 2007 |
| 7212644 |
Resonant frequency adjustment using tunable damping rods |
May. 1, 2007 |
| 7206428 |
Acoustic receiver having improved mechanical suspension |
Apr. 17, 2007 |
| RE39330 |
Speaker system and a method for improving sound quality thereof |
Oct. 10, 2006 |
| 7111706 |
Enclosure and audio-visual apparatus comprising same |
Sep. 26, 2006 |
| 7088839 |
Acoustic receiver having improved mechanical suspension |
Aug. 8, 2006 |
| 7068979 |
Mobile telecommunications device |
Jun. 27, 2006 |
| 7035419 |
Anti-resonant structure for speakers |
Apr. 25, 2006 |
| 7019621 |
Methods and apparatus to increase sound quality of piezoelectric devices |
Mar. 28, 2006 |
| 7011178 |
Sound transmitter and speaker |
Mar. 14, 2006 |
| 6914993 |
Piezoelectric film loudspeaker |
Jul. 5, 2005 |
| 6870941 |
Dipole radiating dynamic speaker |
Mar. 22, 2005 |
| 6788796 |
Differential microphone |
Sep. 7, 2004 |
| 6782112 |
Low frequency transducer enclosure |
Aug. 24, 2004 |
| 6751329 |
Loudspeaker driver |
Jun. 15, 2004 |
| 6751330 |
Speaker system |
Jun. 15, 2004 |
| 6704427 |
Acoustic transducer with improved acoustic damper |
Mar. 9, 2004 |
| 6636750 |
Speakerphone accessory for a portable telephone |
Oct. 21, 2003 |
| 6621910 |
Method and arrangement for improving leak tolerance of an earpiece in a radio device |
Sep. 16, 2003 |
| 6574347 |
Flat-panel loudspeaker with compressed dampeners |
Jun. 3, 2003 |
| 6526150 |
Telephone loudspeaker enclosure |
Feb. 25, 2003 |
| 6490361 |
Apparatus having a housing which accommodates a sound transducer and which has a passage |
Dec. 3, 2002 |
| 6473625 |
Earpiece acoustics |
Oct. 29, 2002 |
| 6373956 |
Method and arrangement for attenuating mechanical resonance in a loudspeaker |
Apr. 16, 2002 |
| 6356643 |
Electro-acoustic transducer |
Mar. 12, 2002 |
| 6324292 |
Speaker apparatus |
Nov. 27, 2001 |
| 6320971 |
Speaker system and a method for improving sound quality thereof |
Nov. 20, 2001 |
| 6278789 |
Frequency selective acoustic waveguide damping |
Aug. 21, 2001 |
| 6275597 |
Loudspeaker system having a bass-reflex port |
Aug. 14, 2001 |
| 6266427 |
Damped structural panel and method of making same |
Jul. 24, 2001 |
| 6215655 |
Drive-in ordering apparatus |
Apr. 10, 2001 |
| 6195442 |
Passive vibroacoustic attenuator for structural acoustic control |
Feb. 27, 2001 |
| 6173064 |
Isolation/damping mounting system for loudspeaker crossover network |
Jan. 9, 2001 |
| 6154556 |
Dome speaker |
Nov. 28, 2000 |
| 6154554 |
Microphone |
Nov. 28, 2000 |
| 6122389 |
Flush mounted directional microphone |
Sep. 19, 2000 |
| 6108429 |
Speaker adapted for use as a center woofer in 3-dimensional sound system |
Aug. 22, 2000 |
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