H03G9/06 - CPC Classification Index

ClassID:

220305 ⎘

H03G9/06 - CPC Classification

Classification description:

Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having discharge tubes for gain control and tone control

Sub-classes:

H03G9/08 » incorporating negative feedback 1

Recent Application in this class:

20200067476

2020-02-27

Inversion of dynamic range control

20140219477

2014-08-07

Guitar amplifier

20110013782

2011-01-20

Speaker system and amplifier

20100204995

2010-08-12

Compander which uses adaptive pre-emphasis filtering on the basis of linear prediction

20050117757

2005-06-02

Sound signal processing device and sound signal processing method

20050094828

2005-05-05

Bass boost circuit