H03G3/345 - CPC Classification Index

ClassID:

220268 ⎘

H03G3/345 - CPC Classification

Classification description:

Gain control in amplifiers or frequency changers without distortion of the input signal; Automatic control in amplifiers having semiconductor devices; Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems Muting during a short period of time when noise pulses are detected, i.e. blanking

Sub-classes:

H03G3/347 » {dependent on the rate of noise pulses} 1

Recent Application in this class:

20220121298

2022-04-21

Short-term noise suppression

20190123694

2019-04-25

Methods and circuits to reduce pop noise in an audio device

20180331668

2018-11-15

Noise suppression apparatus, noise suppression method, and non-transitory recording medium

20170093348

2017-03-30

Methods and circuits to reduce pop noise in an audio device

20140269598

2014-09-18

Apparatus and method for time domain ICIC with muting pattern comprising fixed and optional parts

20140226769

2014-08-14

Quadrature impulse noise remover

20140219454

2014-08-07

Signal processing apparatus concealing impulse noise by autoregressive modeling

20140072132

2014-03-13

Method and system for reducing impulsive noise disturbance

20130195164

2013-08-01

Systems and methods for enhancing audio quality of FM receivers

#10

20130195163

2013-08-01

Systems and methods for enhancing audio quality of FM receivers

#11

20120329417

2012-12-27

Low noise amplifier protection using a peak detector

#12

20120121037

2012-05-17

Apparatus and method of reducing noise for frequency modulated signals

#13

20110293110

2011-12-01

De-pop circuit and an associated audio system

#14

20110268288

2011-11-03

Noise gate, sound collection device, and noise removing method

#15

20110207426

2011-08-25

Broadcast receiving apparatus and method of detecting noise components performed by broadcast receiving apparatus

#16

20090274251

2009-11-05

Noise suppressing device

#17

20090262954

2009-10-22

AUDIO SIGNAL ADJUSTING METHOD AND DEVICE UTILIZING THE SAME

#18

20090262873

2009-10-22

Noise removal device and noise removal method

#19

20090168929

2009-07-02

Method and apparatus for impulse noise detection and suppression for DVB-T

#20

20090154746

2009-06-18

Method for attenuating interfering noise and corresponding hearing device

#21

20090016471

2009-01-15

Impulse Noise Detection and Mitigation In Receivers

#22

20080280582

2008-11-13

Radio receiver having ignition noise detector and method therefor

#23

20080261549

2008-10-23

Noise blanker circuit and method for removing noise and correcting a signal

#24

20080200127

2008-08-21

Impulse Noise Correction

#25

20070173216

2007-07-26

Method and circuit for squelch detection in serial communications

#26

20070049227

2007-03-01

Noise blanker control

#27

20070030931

2007-02-08

Method of and apparatus for detecting impulsive noise, method of operating a demodulator, demodulator and radio receiver

#28

20060215840

2006-09-28

Noise removal device

#29

20050245290

2005-11-03

Telephone headset amplifier with noise blanking capability

#30

20050233720

2005-10-20

Method of suppressing frequency-shift keying (FSK) interference

#31

20050164722

2005-07-28

Noise eliminator

#32

20050143109

2005-06-30

Noise eliminating apparatus and receiver

#33

20050107058

2005-05-19

Method and circuit system for suppressing noise in a signal processing circuit

#34

20050078841

2005-04-14

Method and apparatus for resetting a buffer amplifier

#35

16040179

2019-08-13

Vehicle radio interference sensor device