H03G9/12 - CPC Classification Index

ClassID:

220308 ⎘

H03G9/12 - CPC Classification

Classification description:

Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices

Sub-classes:

H03G9/14 » for gain control and tone control 47
H03G9/18 » for tone control and volume expansion or compression 62

Recent Application in this class:

20250244946

DYNAMIC RANGE CONTROL FOR A WIDE VARIETY OF PLAYBACK ENVIRONMENTS

20240168706

Dynamic range control for a wide variety of playback environments

20230075445

Dynamic range control for a wide variety of playback environments

20210318848

Dynamic range control for a wide variety of playback environments

20200293272

Dynamic range control for a wide variety of playback environments

20190310822

Dynamic range control for a wide variety of playback environments

20190065140

Dynamic range control for a wide variety of playback environments

20170346581

Audio hub apparatus and system

20160231983

Dynamic range control for a wide variety of playback environments

20160227339

Dynamic range control for a wide variety of playback environments

20160197590

Dynamic range control for a wide variety of playback environments

20110175487

Method for producing a dielectric layer in an electroacoustic component, and electroacoustic component

20090161887

DATA PROCESSING APPARATUS AND METHOD OF CONTROLLING THE SAME

20070232253

Method for active Gm-C filter gain control

20070053528

Method and apparatus for automatic volume control in an audio player of a mobile communication terminal