H03G5/04 - CPC Classification Index

ClassID:

220275 ⎘

H03G5/04 - CPC Classification

Classification description:

Tone control or bandwidth control in amplifiers; Manually-operated control in untuned amplifiers

Sub-classes:

H03G5/06 » having discharge tubes 0
H03G5/10 » having semiconductor devices 11

Recent Application in this class:

20170361770

2017-12-21

VEHICLE HORN DEVICE AND METHOD

20140205111

2014-07-24

Sound processing apparatus, method, and program

20130308793

2013-11-21

Device for adding harmonics to sound signal

20130094665

2013-04-18

Device and method for reproducing an audio signal

20110176696

2011-07-21

Method and system for enhancing bass effect in audio signals

20110019828

2011-01-27

Apparatus and method for sound enhancer

20110002471

2011-01-06

Systems and methods for transducer calibration and tuning

20100208899

2010-08-19

Method and system for enhancing bass effect in audio signals

20080310654

2008-12-18

Circuit for processing sound signals

#10

20080075292

2008-03-27

AUDIO PROCESSING APPARATUS SUITABLE FOR SINGING PRACTICE

#11

20080069377

2008-03-20

AUDIO PROCESSING SYSTEM AND METHOD

#12

20060147046

2006-07-06

Method and system for enhancing bass effect in audio signals

#13

20050190930

2005-09-01

Equalizer parameter control interface and method for parametric equalization

#14

20050088238

2005-04-28

High speed amplifier incorporating pre-emphasis