Patents
Sitemap › H03 - Basic electronic circuitry › H03G - Control of amplification › H03G 7 - Volume compression or expansion in amplifiers
Patents for H03G 7 - Volume compression or expansion in amplifiers (2,243)
02/2004
02/25/2004EP1250754B1 Non-linear signal processor
02/19/2004US20040032298 Circuit configuration for producing exponential predistortion for a variable amplifier
02/12/2004WO2004013840A1 Digital signal processing techniques for improving audio clarity and intelligibility
02/05/2004DE10232645A1 Schaltungsanordnung zur Verringerung des Dynamikbereichs von Audiosignalen A circuit arrangement for reducing the dynamic range of audio signals
02/05/2004DE10011193B4 Kompandersystem mit einer Kompressorschaltung und einer Expanderschaltung Compander circuit with a compressor and an expander circuit
01/2004
01/29/2004WO2004010412A2 Circuit arrangement for reducing the dynamic range of audio signals
01/29/2004WO2002097979A3 Programmable logarithmic gain adjustment for open-loop amplifiers
01/22/2004US20040014436 Amplitude limitation
01/21/2004CN1135707C Method and apparatus for compression using reversible sub-wave conversion and embedded code stream
01/14/2004CN1468466A A gmc filter and method for suppressing unwanted signals introduced by the filter
01/06/2004US6675125 Statistics generator system and method
01/01/2004US20040000950 Low distortion compression amplifier
12/2003
12/25/2003US20030234675 Limiting amplifier with a power detection circuit
12/18/2003WO2003104925A2 Method and system for all digital gain control
12/18/2003WO2003104924A2 Acoustical virtual reality engine and advanced techniques for enhancing delivered sound
12/18/2003WO2002060052A3 Precision automatic gain control circuit
12/18/2003CA2488750A1 Method and system for all digital gain control
12/18/2003CA2488689A1 Acoustical virtual reality engine and advanced techniques for enhancing delivered sound
12/11/2003US20030228853 Method and system for all digital gain control
12/09/2003US6661286 Variable gain amplifier
12/03/2003EP1366566A2 Gain linearizer for variable gain amplifiers
12/02/2003US6658120 Polarity-independent transmission system
12/02/2003CA2314555C Signal notching system for limiting signal peaks
11/2003
11/25/2003US6654427 Signal notching system for limiting signal peaks
11/19/2003EP1362417A2 Variable-gain differential input and output amplifier
11/13/2003US20030210086 Method and apparatus for a limiting amplifier with precise output limits
11/12/2003EP1360760A2 Amplitude limitation
11/12/2003EP1360758A2 Circuit arrangement for providing an exponential pre-distortion for an adjustable amplifier
11/06/2003US20030206579 Multistage nonlinear echo-canceller for digital communication systems with or without frequency division duplexing
11/04/2003US6642795 Fast recovery time precision amplifier
10/2003
10/30/2003WO2002097977A3 Enhancing the intelligibility of received speech in a noisy environment
10/30/2003US20030201824 Method and apparatus for exponential gain variations with a linearly varying input code
10/22/2003EP1252712A4 Multiple time constant rectifier apparatus and method
10/08/2003EP1351550A1 Method for adapting a signal amplification in a hearing aid and a hearing aid
10/01/2003EP1348255A2 Circuit arrangement
09/2003
09/30/2003US6628164 Method and apparatus for exponential gain variations with a linearly varying input code
09/25/2003WO2002031973A3 Gain linearizer for variable gain amplifiers
09/24/2003EP1346475A2 Controllable set of current sources
09/18/2003WO2003077232A1 Music signal distortion generation apparatus
09/18/2003WO2002049210A3 Variable-gain differential input and output amplifier
08/2003
08/28/2003US20030160599 Controllable Current Source Assembly
08/21/2003US20030155968 Differential gain adjusting amplifier system with selectable electroluminescent differential photocell attenuation
08/14/2003WO2002011283A3 Amplitude limitation
08/14/2003US20030151462 Fast recovery time precision amplifier
08/13/2003CN1435945A Power amplifier clipping circuit for minimized output of distortion
07/2003
07/31/2003WO2003063346A2 A method for decreasing the dynamic range of a signal and electronic circuit
07/31/2003US20030141928 Power amplifier clipping circuit for minimizing output distortion
07/30/2003CN1116737C User adjustable volume control that accommodates hearing
07/29/2003US6600372 Attenuator control circuit
07/24/2003US20030137352 Variable gain amplifier circuitry in automatic gain control
07/23/2003EP0976303B1 Method and apparatus for noise reduction, particularly in hearing aids
07/23/2003EP0830731B1 Signal conditioning circuit for compressing audio signals
07/17/2003WO2003058831A1 Wireless receiver without agc
07/17/2003WO2002071597A3 Circuit arrangement for providing an exponential pre-distortion for an adjustable amplifier
07/17/2003US20030134608 Signal waveform detection circuit
07/15/2003US6594321 Electrical clipper
07/10/2003US20030128852 Polarity-independent transmission system
07/03/2003US20030122623 Gain control circuit for controlling a gain in a variable gain cell
06/2003
06/25/2003EP1320928A1 A gmc filter and method for suppressing unwanted signals introduced by the filter
06/24/2003US6583667 High frequency CMOS differential amplifiers with fully compensated linear-in-dB variable gain characteristic
06/19/2003US20030112088 Compander architecture and methods
06/19/2003US20030112072 Exponential function generator embodied by using a CMOS process and variable gain amplifier employing the same
06/12/2003US20030107438 Variable gain amplifier circuit
05/2003
05/30/2003WO2002045261A3 Controllable set of current sources
05/29/2003US20030098805 Input level adjust system and method
05/27/2003US6570447 Programmable logarithmic gain adjustment for open-loop amplifiers
05/22/2003WO2002069613A3 Method and system for adjusting the dynamic range of a digital-to-analog converter in a wireless communications device
05/15/2003WO2002060053A3 Methods, devices and computer program products for compressing an audio signal
05/15/2003US20030092405 Envelope limiting for polar modulators
05/15/2003US20030091125 System and method for limiting and filtering a signal
05/14/2003EP1214782B1 Amplifier circuit with a sectional linear transmission function
05/13/2003US6563383 Variable gain circuit
05/13/2003US6563361 Method and apparatus for a limiting amplifier with precise output limits
05/06/2003US6559705 Circuit arrangement
04/2003
04/29/2003US6556685 Companding noise reduction system with simultaneous encode and decode
04/22/2003US6552591 Method and apparatus for processing a wide dynamic range signal
04/10/2003US20030067990 Peak to average power ratio reduction in a digitally-modulated signal
04/07/2003WO2001076063A2 Method for processing an input signal for producing an output signal and an application of said method in hearing aids and devices
04/07/2003CA2425180A1 Method for processing an input signal for producing an output signal and an application of said method in hearing aids and devices
04/01/2003US6542612 Companding amplifier with sidechannel gain control
03/2003
03/27/2003US20030059063 Amplifier with limiter
03/27/2003US20030059034 Noise compensation methods and systems for increasing the clarity of voice communications
03/26/2003EP1296450A2 Amplifier with limiter
03/26/2003CN1104140C Reversible wavelet transform and embedded codestream manipulation
03/20/2003US20030055635 Segmented mapping converter system and method
03/18/2003US6535846 Dynamic range compressor-limiter and low-level expander with look-ahead for maximizing and stabilizing voice level in telecommunication applications
03/12/2003CN1402905A 非线性信号处理器 Nonlinear Signal Processor
03/05/2003EP1289158A1 Method for noise reduction of a FM signal
03/04/2003US6529607 Method for producing a constant sound pressure level in hearing aids and corresponding hearing aid
02/2003
02/27/2003US20030039371 Method for noise reduction of a FM signal
02/25/2003US6525606 Variable gain amplifier
02/20/2003US20030035549 Signal processing system and method
02/05/2003CN1395441A Reducing amplifier sensitivity to deflection voltage
02/04/2003US6516068 Microphone expander
01/2003
01/30/2003US20030023793 Method and apparatus for in-system programming through a common connection point of programmable logic devices on multiple circuit boards of a system
01/30/2003US20030023429 Digital signal processing techniques for improving audio clarity and intelligibility
01/09/2003WO2003003790A1 Digital signal processing system and method for a telephony interface apparatus
01/09/2003WO2003003570A1 Telephony interface apparatus
01/09/2003US20030006840 Reduction of sensitivity of an amplifier to an offset voltage
01/08/2003EP1274166A1 Amplifier with reduced sensivity to offset voltages
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