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Class Information
Number: 381/94.9
Name: Electrical audio signal processing systems and devices > Noise or distortion suppression > Feedforward circuitry for transducer compensation
Description: Subject matter having circuitry designed to compensate for distortion which is generated by a transducer itself (such as a loudspeaker or microphone), without using feedback.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7593535 |
Neural network filtering techniques for compensating linear and non-linear distortion of an audio transducer |
Sep. 22, 2009 |
| 7536018 |
Active noise cancellation system |
May. 19, 2009 |
| 7088832 |
IFB system apparatus and method |
Aug. 8, 2006 |
| 6771781 |
Variable damping circuit for a loudspeaker |
Aug. 3, 2004 |
| 6438240 |
Circuit to improve transducer separation in handsfree telephone |
Aug. 20, 2002 |
| 6137886 |
Active vibration control method and apparatus |
Oct. 24, 2000 |
| 5917922 |
Method of operating a single loud speaker drive system |
Jun. 29, 1999 |
| 5615272 |
Single loud speaker drive system |
Mar. 25, 1997 |
| 5519781 |
Self damping speaker matching device and method |
May. 21, 1996 |
| 5386474 |
Amplifier-speaker interface correction circuit |
Jan. 31, 1995 |
| 5373563 |
Self damping speaker matching device |
Dec. 13, 1994 |
| 4442323 |
Microphone with vibration cancellation |
Apr. 10, 1984 |
| 4427845 |
Dynamic microphone |
Jan. 24, 1984 |
| 4426552 |
Speaker distortion compensator |
Jan. 17, 1984 |
| 4420655 |
Circuit to compensate for deficit of output characteristics of a microphone by output characteristics of associated other microphones |
Dec. 13, 1983 |
| 3967064 |
Low noise electronic circuit, transducer using the same, and method |
Jun. 29, 1976 |
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