ClassID:

220303

H03G9/025 - page 2 - CPC Classification

Classification description:

Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers frequency-dependent volume compression or expansion, e.g. multiple-band systems

Recent Application in this class:
#301
20080181428
2008-07-31

Method of and a device for processing audio data, a program element and a computer-readable medium

#302
20080170723
2008-07-17

Audio Reproducing Apparatus and Method, and Computer Program

#303
20080123883
2008-05-29

Adaptive dynamic range optimization sound processor

#304
20080069385
2008-03-20

Amplifier and Method of Amplification

#305
20070291959
2007-12-20

Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal

#306
20070242837
2007-10-18

Speed- and User-Dependent Timbre and Dynamic Range Control Method, Apparatus and System for Automotive Audio Reproduction Systems

#307
20070136050
2007-06-14

System and method for audio signal processing

#308
20070092089
2007-04-26

Method, apparatus and computer program for calculating and adjusting the perceived loudness of an audio signal

#309
20060153403
2006-07-13

Signal strength information dependent control of small electrodynamic transducers in audio systems

#310
20060139093
2006-06-29

Three-channel state-variable compressor circuit

#311
20060126865
2006-06-15

Method and apparatus for adaptive sound processing parameters

#312
20060115098
2006-06-01

Method and apparatus to reconstruct high-frequency components of an audio signal

#313
20060087380
2006-04-27

Method for limiting the dynamic range of audio signals, and circuit arrangement for this purpose

#314
20050238185
2005-10-27

Apparatus for reproduction of compressed audio data

#315
20050213780
2005-09-29

Dynamic equalizing

#316
20050207583
2005-09-22

Audio enhancement system

#317
20050195993
2005-09-08

Method and apparatus of compensating for speaker distortion in an audio apparatus

#318
20050141733
2005-06-30

Adaptive dynamic range optimization sound processor

#319
20050135635
2005-06-23

NVH dependent parallel compression processing for automotive audio systems

#320
20050123153
2005-06-09

Signal compression/expansion device and mobile communication terminal

#321
20050111683
2005-05-26

Hearing compensation system incorporating signal processing techniques

#322
20050090295
2005-04-28

Communication headset with signal processing capability

#323
20050069155
2005-03-31

Audio pre-amp and mid-band compressor circuit

#324
20050036633
2005-02-17

Apparatus and method for reconstructing high frequency part of signal

#325
20050013443
2005-01-20

Audio correcting apparatus

#326
17319859
2023-06-27

Linking audio amplification gain reduction per channel and across frequency ranges