H03G3/18 - CPC Classification Index

ClassID:

220237 ⎘

H03G3/18 - CPC Classification

Classification description:

Gain control in amplifiers or frequency changers without distortion of the input signal; Manually-operated control in frequency-selective amplifiers having semiconductor devices

Recent Application in this class:

20210384879

2021-12-09

ACOUSTIC SIGNAL PROCESSING DEVICE, ACOUSTIC SIGNAL PROCESSING METHOD, AND NON-TRANSITORY COMPUTER-READABLE RECORDING MEDIUM THEREFOR

20200389141

2020-12-10

Variable gain circuit, high frequency switch, and transistor circuit

20190391782

2019-12-26

METHOD AND SYSTEM OF PROCESSING AN AUDIO RECORDING FOR FACILITATING PRODUCTION OF COMPETITIVELY LOUD MASTERED AUDIO RECORDING

20180349087

2018-12-06

Sound control by various hand gestures

20170359135

2017-12-14

Mixing console with solo output

20150381129

2015-12-31

Variable gain transimpedance amplifier

20150162940

2015-06-11

TIA-to-ADC interface with low-noise and a wide-range of passive gain control

20110084763

2011-04-14

Db-linear process-independent variable gain amplifier

15043516

2017-02-07

Electrolarynx control button arrangement

#10

14728317

2017-08-01

System and method for providing a switchless selectable input balanced low noise amplifier