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Class Information
Number: 379/392.01
Name: Telephonic communications > Substation or terminal circuitry > Noise suppression
Description: Subject matter including circuitry for eliminating undesired signals.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7460661 |
Method and means for increasing inherent channel capacity for wired network |
Dec. 2, 2008 |
| 7454010 |
Noise reduction and comfort noise gain control using bark band weiner filter and linear attenuation |
Nov. 18, 2008 |
| 7436786 |
Telecommunications system for minimizing the effect of white noise data packets for the generation of required white noise on transmission channel utilization |
Oct. 14, 2008 |
| 7369990 |
Reducing acoustic noise in wireless and landline based telephony |
May. 6, 2008 |
| 7333604 |
Adaptive notification of an incoming call in a mobile phone |
Feb. 19, 2008 |
| 7260209 |
Methods and apparatus for improving voice quality in an environment with noise |
Aug. 21, 2007 |
| 7242763 |
Systems and methods for far-end noise reduction and near-end noise compensation in a mixed time-frequency domain compander to improve signal quality in communications systems |
Jul. 10, 2007 |
| 7231036 |
Anti-howling circuit detecting howling from effect of predicted echo signal |
Jun. 12, 2007 |
| 7181000 |
Voice transmission device and voice transmission system |
Feb. 20, 2007 |
| 7171246 |
Noise suppression |
Jan. 30, 2007 |
| 7155007 |
Systems and methods for reducing noise in ADSL transmissions |
Dec. 26, 2006 |
| 7106853 |
Method and means for increasing inherent channel capacity for wired network |
Sep. 12, 2006 |
| 7103176 |
Direct coupling of telephone volume control with remote microphone gain and noise cancellation |
Sep. 5, 2006 |
| 7085715 |
Method and apparatus of controlling noise level calculations in a conferencing system |
Aug. 1, 2006 |
| 7079773 |
Power feeding for an optical transmission system |
Jul. 18, 2006 |
| 7065206 |
Method and apparatus for adaptive echo and noise control |
Jun. 20, 2006 |
| 7058368 |
Adaptive feedforward noise cancellation circuit |
Jun. 6, 2006 |
| 7057475 |
Ferrite choke |
Jun. 6, 2006 |
| 7054436 |
Communication terminals with a dual use speaker for sensing background noise and generating sound, and related methods and computer program products |
May. 30, 2006 |
| 7035400 |
Signaling Techniques in channels with asymmetric powers and capacities |
Apr. 25, 2006 |
| 7010118 |
Noise compensation methods and systems for increasing the clarity of voice communications |
Mar. 7, 2006 |
| 7003094 |
Adaptive interference cancellation for ADSL |
Feb. 21, 2006 |
| 7003099 |
Small array microphone for acoustic echo cancellation and noise suppression |
Feb. 21, 2006 |
| 6993127 |
Method and apparatus for gradual application of a hitless monitoring access to a communications circuit employing a guided transmission media |
Jan. 31, 2006 |
| 6990190 |
Method and system for remote telephone calibration |
Jan. 24, 2006 |
| 6963648 |
Echo/noise canceling device for use with personal computers |
Nov. 8, 2005 |
| 6950514 |
Voltage reference filter for subscriber line interface circuit |
Sep. 27, 2005 |
| 6856683 |
Method for reducing noise from a non-linear device that shares a customer loop with an asymmetric digital subscriber line modem |
Feb. 15, 2005 |
| 6850617 |
Telephone receiver circuit with dynamic sidetone signal generator controlled by voice activity detection |
Feb. 1, 2005 |
| 6836544 |
Sidestone reduction in full duplex transceivers |
Dec. 28, 2004 |
| 6801605 |
Telephone network signal conversion system |
Oct. 5, 2004 |
| 6785381 |
Telephone having improved hands free operation audio quality and method of operation thereof |
Aug. 31, 2004 |
| 6711259 |
Method and apparatus for noise suppression and side-tone generation |
Mar. 23, 2004 |
| 6700979 |
Echo canceller |
Mar. 2, 2004 |
| 6690790 |
Receiving section of a telephone with suppression of interference upon switching on/off |
Feb. 10, 2004 |
| 6453041 |
Voice activity detection system and method |
Sep. 17, 2002 |
| 6453042 |
Method and system for remote telephone calibration |
Sep. 17, 2002 |
| 6421376 |
Methods of using digital modem identification information |
Jul. 16, 2002 |
| 6377680 |
Method and apparatus for noise cancellation |
Apr. 23, 2002 |
| 6366880 |
Method and apparatus for suppressing acoustic background noise in a communication system by equaliztion of pre-and post-comb-filtered subband spectral energies |
Apr. 2, 2002 |
| 6360203 |
System and method for dynamic voice-discriminating noise filtering in aircraft |
Mar. 19, 2002 |
| 6175634 |
Adaptive noise reduction technique for multi-point communication system |
Jan. 16, 2001 |
| 5970137 |
Loudspeaker gain correction for a hands-free telephone terminal |
Oct. 19, 1999 |
| 5966438 |
Method and apparatus for adaptive volume control for a radiotelephone |
Oct. 12, 1999 |
| 5848146 |
Audio system for conferencing/presentation room |
Dec. 8, 1998 |
| 5832075 |
Off-hook detector for headset |
Nov. 3, 1998 |
| 5793863 |
Telephone having a speech band limiting function |
Aug. 11, 1998 |
| 5748725 |
Telephone set with background noise suppression function |
May. 5, 1998 |
| 5734987 |
Noise-controlled communication apparatus |
Mar. 31, 1998 |
| 5734713 |
Method and system for remote telephone calibration |
Mar. 31, 1998 |
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