| |
 |
|
Class Information
Number: 381/96
Name: Electrical audio signal processing systems and devices > Loudspeaker feedback
Description: The mechanical or electromechanical coupling of a portion of a sound wave output of a system to a preceding part or input circuit of the system.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7616767 |
Method and device for determining acoustical transfer impedance |
Nov. 10, 2009 |
| 7602923 |
Electro acoustic system built-in test and calibration method |
Oct. 13, 2009 |
| 7602925 |
Audio feedback processing system |
Oct. 13, 2009 |
| 7542577 |
Input sound processor |
Jun. 2, 2009 |
| 7525376 |
Power amplifier with output voltage compensation |
Apr. 28, 2009 |
| 7489784 |
Automatic sound field correcting device and computer program therefor |
Feb. 10, 2009 |
| 7477750 |
Signal delay time measurement device and computer program therefor |
Jan. 13, 2009 |
| 7477751 |
Method and apparatus for sound transduction with minimal interference from background noise and minimal local acoustic radiation |
Jan. 13, 2009 |
| 7474752 |
Audio frequency range adaptation |
Jan. 6, 2009 |
| 7447318 |
System for using digital signal processing to compensate for power compression of loudspeakers |
Nov. 4, 2008 |
| 7436967 |
Apparatus and method of limiting power applied to a loudspeaker |
Oct. 14, 2008 |
| 7359519 |
Method and apparatus for compensating for nonlinear distortion of speaker system |
Apr. 15, 2008 |
| 7260229 |
Position sensor for a loudspeaker |
Aug. 21, 2007 |
| 7203324 |
Audio feedback processing system |
Apr. 10, 2007 |
| 7155017 |
System and method for controlling audio signals for playback |
Dec. 26, 2006 |
| 7155022 |
Electromagnetic feedback reduction in communication device |
Dec. 26, 2006 |
| 7151836 |
Speaker apparatus and sound reproduction apparatus |
Dec. 19, 2006 |
| 7136495 |
Loudspeaker device |
Nov. 14, 2006 |
| 7113603 |
Thermal overload and resonant motion control for an audio speaker |
Sep. 26, 2006 |
| 7113607 |
Low frequency feedback controlled audio system |
Sep. 26, 2006 |
| 7110555 |
Sound signal reproducing apparatus |
Sep. 19, 2006 |
| 7092536 |
System for transducer compensation based on ambient conditions |
Aug. 15, 2006 |
| 7092535 |
Environment adaptable loudspeaker |
Aug. 15, 2006 |
| 7065221 |
Speaker apparatus |
Jun. 20, 2006 |
| 7058186 |
Loudspeaker device |
Jun. 6, 2006 |
| 7053705 |
Mixed-mode (current-voltage) audio amplifier |
May. 30, 2006 |
| 7050594 |
Sound control unit and sound system |
May. 23, 2006 |
| 7043028 |
Method and system for using an audio transducer as both an input and output device in full duplex operation |
May. 9, 2006 |
| 7031476 |
Method and apparatus for intelligent speaker |
Apr. 18, 2006 |
| 7010129 |
Method and device for operating voice-controlled systems in motor vehicles |
Mar. 7, 2006 |
| 7006640 |
Speaker |
Feb. 28, 2006 |
| 7006639 |
Active noise-attenuating duct element |
Feb. 28, 2006 |
| 6985594 |
Voice-to-remaining audio (VRA) interactive hearing aid and auxiliary equipment |
Jan. 10, 2006 |
| 6975734 |
Audio apparatus of negative driving with adaptive gain control |
Dec. 13, 2005 |
| 6944302 |
Sound reproducing system |
Sep. 13, 2005 |
| 6940981 |
Apparatus and method of limiting power applied to a loudspeaker |
Sep. 6, 2005 |
| 6870934 |
Audio loudspeaker detection using back-EMF sensing |
Mar. 22, 2005 |
| 6807279 |
MFB speaker system with controllable speaker vibration characteristic |
Oct. 19, 2004 |
| 6778673 |
Tunable active sound absorbers |
Aug. 17, 2004 |
| 6766025 |
Intelligent speaker training using microphone feedback and pre-loaded templates |
Jul. 20, 2004 |
| 6731760 |
Adjusting a loudspeaker to its acoustic environment: the ABC system |
May. 4, 2004 |
| 6681019 |
POLARITY DETERMINING CIRCUIT FOR LOUDSPEAKERS, AN AUDIO CIRCUIT HAVING A FUNCTION OF DETERMINING POLARITIES OF LOUDSPEAKERS, AND AN AUDIO CIRCUIT HAVING FUNCTIONS OF DETERMINING POLARITIES OF |
Jan. 20, 2004 |
| 6625287 |
Enhancing automatic noise reduction using negative output resistance |
Sep. 23, 2003 |
| 6611135 |
Method and electronic circuit for tuning vibratory transducers |
Aug. 26, 2003 |
| 6608904 |
Method and apparatus for canceling interference in a loudspeaker communication path through adaptive discrimination |
Aug. 19, 2003 |
| 6584204 |
Loudspeaker system with feedback control for improved bandwidth and distortion reduction |
Jun. 24, 2003 |
| 6522757 |
Bass intensification device for speaker system |
Feb. 18, 2003 |
| 6473509 |
Audio system, in particular for motor vehicles |
Oct. 29, 2002 |
| 6417659 |
Electronic circuit for tuning vibratory transducers |
Jul. 9, 2002 |
| 6408078 |
Active reactive acoustical elements |
Jun. 18, 2002 |
|
|
|
