| Patents for H03G 5 - Tone control or bandwidth control in amplifiers (3,156) |
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| 12/29/2004 | WO2004114718A1 Audio signal processing device and audio signal processing method with automatic sound spectrum selection |
| 12/22/2004 | EP1489880A1 Device and method for processing sound signals with automatic selection of acoustic spectrum |
| 12/16/2004 | WO2004109661A1 Sound quality adjusting apparatus and sound quality adjusting method |
| 12/15/2004 | EP1485990A1 Communication device with active equalization and method therefor |
| 12/09/2004 | WO2004107573A1 Audio quality adjustment device |
| 12/07/2004 | US6828860 Gigabit ethernet transceiver with analog front end |
| 12/02/2004 | US20040240684 Automatic and simultaneous control of loudness and loudness compensation of an audio signal |
| 11/29/2004 | CA2468201A1 Automatic and simultaneous control of loudness and loudness compensation of an audio signal |
| 11/18/2004 | WO2004100604A1 Reciprocal index lookup for btsc compatible coefficients |
| 11/17/2004 | CN1547803A Audio processing device |
| 10/27/2004 | EP1471767A2 Method and system for acoustic shock protection |
| 10/20/2004 | CN1539138A Method and system for implementing low complexity spectrum estimation technique for comport noise generation |
| 10/20/2004 | CN1539137A Method and system for generating colored confort noise |
| 10/13/2004 | CN2648748Y Audio amplifier with undistorted sonic wave |
| 09/30/2004 | WO2004084407A1 Gain equalization device |
| 09/30/2004 | WO2004082692A1 Actacid composition |
| 09/30/2004 | US20040189383 Automatic gain control method and device |
| 09/29/2004 | CN1533633A Flter circuit and method for processing audio sigual |
| 09/29/2004 | CN1533042A Automatic pulse with regulating method and device |
| 09/28/2004 | US6798283 Gigabit ethernet transceiver with analog front end |
| 09/23/2004 | WO2004082321A2 Multi-channel digital feedback reducer system |
| 09/23/2004 | US20040184624 Audio mixing circuit |
| 09/16/2004 | US20040179700 Filter circuit and method for processing an audio signal |
| 09/16/2004 | US20040179387 Multi-channel digital feedback reducer system |
| 09/15/2004 | EP1129600B1 Method for in-situ measuring and in-situ correcting or adjusting a signal process in a hearing aid with a reference signal processor |
| 09/14/2004 | US6792121 Audio signal amplifier circuit and portable telephone set and portable electronic device using the same audio signal amplifier circuit |
| 09/14/2004 | US6792115 Apparatus for generating harmonics in an audio signal |
| 09/10/2004 | WO2004077408A1 Band correcting apparatus |
| 09/10/2004 | WO2004077402A1 Dip filter frequency characteristic decision method |
| 09/02/2004 | US20040172241 Method and system of correcting spectral deformations in the voice, introduced by a communication network |
| 09/02/2004 | US20040170283 Howling control device and howling control method |
| 09/02/2004 | US20040169551 Active filter circuit with dynamically modifiable gain |
| 08/31/2004 | US6785523 Self-correlation detection in automatic gain calibration |
| 08/24/2004 | US6782107 Method and arrangement for automatically controlling the volume in an audio signal reproduction device |
| 08/18/2004 | EP1446874A2 Microphone-tailored equalizing system |
| 08/18/2004 | EP1044583B1 Means for bass enhancement in an audio system |
| 08/18/2004 | CN1521944A Sound correction system, sound correction method and sound correction apparatus |
| 08/17/2004 | US6778601 Adaptive audio equalizer apparatus and method of determining filter coefficient |
| 08/11/2004 | EP1342316B1 Playback device for audio signals that are transmitted over potentially disturbed channels |
| 08/05/2004 | WO2004010412A3 Circuit arrangement for reducing the dynamic range of audio signals |
| 08/05/2004 | US20040151328 Sound correction system, recording medium on which a sound correction program is recorded, sound correction method and sound correction apparatus |
| 08/05/2004 | US20040150467 Adjustable bandwidth high pass filter for large input signal, low supply voltage applications |
| 08/05/2004 | DE10303258A1 Graphischer Audio-Equalizer mit parametrischer Equalizer-Funktion Graphic audio equalizer with parametric equalizer function |
| 08/04/2004 | EP1442543A2 Apparatus and method of controlling signal levels |
| 08/04/2004 | EP0958710B1 Audio system comprising audio signal processing circuit |
| 08/04/2004 | CN1518335A Graphic audio equalizer |
| 07/29/2004 | US20040146170 Graphic audio equalizer with parametric equalizer function |
| 07/28/2004 | EP1440509A2 Digital audio processor |
| 07/22/2004 | US20040143433 Speech communication apparatus |
| 07/22/2004 | DE10359656A1 Telekommunikationsgerät Telecommunications Equipment |
| 07/21/2004 | CN1158898C Means for bass enhancement in audio system |
| 07/15/2004 | US20040136548 Linearized filter band equipment and processes |
| 07/15/2004 | US20040135570 Hand-held, ergonomic capacitive amplifier and hand-held tone generator to be used in conjunction with the capacitive amplifier |
| 07/14/2004 | EP1437828A2 Equipment and processes for linearization of interactions between filters |
| 07/08/2004 | US20040131206 User selectable sound enhancement feature |
| 07/08/2004 | DE10359038A1 Multimediasystem mit zuvor gespeicherten Entzerrungseinstellungen für mehrere Fahrzeugumgebungen Multimedia system with previously stored equalizer settings for multiple vehicle environments |
| 07/08/2004 | CA2453727A1 User seectable sound enhancement feature |
| 07/07/2004 | CN1511430A Howling control device and howling control method |
| 07/07/2004 | CN1156961C Automatic gain controlling method and apparatus |
| 07/06/2004 | US6760451 Compensating filters |
| 07/01/2004 | US20040125962 Method and apparatus for dynamic sound optimization |
| 06/24/2004 | WO2004054099A1 A fully parametric equalizer |
| 06/24/2004 | US20040122540 Variable digital high and low pass filters |
| 06/23/2004 | CN1155238C Frequency compensated pin diode attenuator |
| 06/22/2004 | US6754336 Telephone apparatus with hearing assistance |
| 06/17/2004 | WO2002089521A3 Microphone-tailored equalizing system |
| 06/17/2004 | US20040114771 Multimedia system with pre-stored equalization sets for multiple vehicle environments |
| 06/16/2004 | EP1429316A1 System and method for multi-referenced correction of spectral voice distortions introduced by a communication network |
| 06/16/2004 | EP1428315A1 Unobtrusive removal of periodic noise |
| 06/16/2004 | EP0972347B1 Serial digital data communications receiver with automatic cable equalizer, agc system, and dc restorer |
| 06/10/2004 | US20040108892 Gigabit ethernet transceiver with analog front end |
| 06/09/2004 | EP1427104A1 Sound quality adjusting device and filter device used therefor, sound quality adjusting method, and filter designing method |
| 06/09/2004 | CN1153504C Audio system comprising audio signal processing circuit |
| 06/03/2004 | DE10344854A1 Hand-held ergonomic capacitive amplifier e.g. for tracking and identifying conductor wires in telecommunications systems, has noise-signal suppression unit coupled to input terminal and receiving input signal |
| 06/02/2004 | EP1423985A2 Speaker equalization tool |
| 06/01/2004 | US6745016 Automatic gain control method and device |
| 05/27/2004 | US20040101148 Electronic appliance audio filtering based on output device selection |
| 05/26/2004 | EP1421682A2 Audio processing device |
| 05/25/2004 | CA2245525C Fat sound creation means |
| 05/21/2004 | WO2004012476A3 Electrical impedance based audio compensation in audio devices and methods therefor |
| 05/20/2004 | US20040098149 Digital audio sampling scheme |
| 05/20/2004 | US20040096068 Audio effector circuit |
| 05/18/2004 | US6738604 Programmable IF bandwidth using fixed bandwidth filters |
| 05/13/2004 | US20040091035 Active filter circuit with dynamically modifiable internal gain |
| 05/06/2004 | WO2002080358A3 Digital audio processor |
| 05/06/2004 | US20040085128 Gigabit ethernet transceiver with analog front end |
| 05/06/2004 | US20040085125 Gigabit ethernet transceiver with anjalog front end |
| 05/06/2004 | US20040085124 Gigabit ethernet transceiver with analog front end |
| 05/05/2004 | CN1494353A Sounder signal processor and its method |
| 05/04/2004 | US6731160 Adjustable bandwidth high pass filter for large input signal, low supply voltage applications |
| 04/28/2004 | CN1148059C Method and device for automatic compensating sound volume |
| 04/22/2004 | US20040076302 Device for the noise-dependent adjustment of sound volumes |
| 04/21/2004 | EP1411633A2 Improved weak signal processing based on impulse noise blanking |
| 04/21/2004 | CN1491480A Digital audio processor |
| 04/15/2004 | US20040071299 Method and apparatus for adjusting frequency characteristic of signal |
| 04/15/2004 | US20040071297 Apparatus and method for audio-signal-processing |
| 04/15/2004 | US20040070443 Ladder filter, analog equalizer and signal readout system |
| 04/15/2004 | DE4305863B4 Equalizer Equalizer |
| 04/14/2004 | EP1407544A2 Filter circuit and method for processing an audio signal |
| 04/14/2004 | CN1489283A High fidelity audio signal amplifying method |