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)
09/2005
09/14/2005EP1575164A2 Sound signal processing apparatus and sound signal processing method
09/14/2005CN1669251A Method and system for all digital gain control
09/14/2005CN1669217A Variable gain amplifier
09/13/2005US6944305 Audio dynamics processing control system
09/08/2005US20050195034 Attenuation cell with an attenuation factor control device
09/06/2005US6940981 Apparatus and method of limiting power applied to a loudspeaker
09/06/2005US6940342 Method and apparatus for exponential gain variations with a linearly varying input code
09/01/2005US20050190931 Apparatus and method for adjusting sound volume for televisions and other audio systems
09/01/2005US20050190866 Digital automatic gain control
09/01/2005US20050190087 AGC circuit, AGC circuit gain control method, and program for the AGC circuit gain control method
08/2005
08/31/2005EP1569350A1 Power limit device and digital radio transmitter using the same
08/31/2005EP1568236A2 Continuously variable gain radio frequency driver amplifier having linear in decibel gain control characteristics
08/31/2005CN1662043A Volume adjustment set and method
08/31/2005CN1661909A AGC circuit and gain control method, and program
08/31/2005CN1661908A System and method for adjusting power amplifier output power
08/25/2005WO2005078921A2 Radio frequency low noise amplifier with automatic gain control
08/24/2005CN1658499A 阻抗阻塞滤波器电路 An impedance blocking filter circuit
08/23/2005US6934593 Process for noise reduction, particularly for audio systems, device and computer program product therefor
08/23/2005US6934344 Digital automatic gain control
08/18/2005US20050182627 Audio signal processing apparatus and audio signal processing method
08/18/2005US20050179489 Power supply rejection for pulse width modulated amplifiers and automatic gain control
08/16/2005US6930532 Exponential conversion circuit and variable gain circuit
08/11/2005WO2005074129A2 Automatic audio signal dynamic range adjustment
08/11/2005US20050175194 Dynamic range reducing volume control
08/10/2005CN1652205A Audio signal processing apparatus and audio signal processing method
08/10/2005CN1214522C Non-linear signal processor
08/09/2005US6927632 Low distortion compression amplifier
08/03/2005CN1649406A Emphasis circuit
07/2005
07/28/2005WO2005067609A2 Improved power supply rejection for pulse width modulated amplifiers and automatic gain control
07/28/2005US20050164667 System and method for adjusting power amplifier output power in linear dB steps
07/28/2005US20050164661 Emphasis circuit
07/28/2005US20050163324 Apparatus and method of limiting power applied to a loudspeaker
07/27/2005EP1557960A1 Emphasis circuit
07/27/2005EP1557943A1 System and method for adjusting power amplifier output power in linear dB steps
07/20/2005EP1554800A1 Means for limiting an output signal of an amplifier stage
07/19/2005US6920188 Method and apparatus for processing a multiple-component wide dynamic range signal
07/19/2005US6919760 Linear-in-dB variable gain amplifier
07/14/2005WO2005064986A1 Audio output apparatus
07/13/2005EP1552505A1 Digital signal processing techniques for improving audio clarity and intelligibility
07/07/2005WO2005048644A3 System and method for controlling audio output
07/07/2005US20050147262 Method for decreasing the dynamic range of a signal and electronic circuit
07/07/2005US20050147185 OC192 peak detect circuit having low parasitics, high dynamic range and high sensitivity
07/06/2005EP1551100A2 Attenuator comprising a control device for controlling the attenuation factor
07/06/2005CN1636319A Gain linearizer for variable gain amplifiers
07/05/2005US6914987 Audio amplifier with voltage limiting in response to spectral content
06/2005
06/30/2005US20050140423 CMOS exponential function generating circuit with temperature compensation technique
06/23/2005WO2004082322A3 Apparatus and method of limiting power applied to a loudspeaker
06/23/2005US20050135520 Multi-branch radio frequency amplifying apparatus and method
06/22/2005EP1543612A2 Power supply based audio compression for digital audio amplifier
06/15/2005CN1627636A Signal processors and associated methods
06/14/2005US6907129 System and method for digital volume control
06/14/2005US6906592 Continuously variable gain radio frequency driver amplifier having linear in decibel gain control characteristics
06/14/2005US6906588 Variable-gain differential input and output amplifier
06/09/2005US20050123152 Signal processors and associated methods
06/07/2005US6904274 System and method for inverting automatic gain control (AGC) and soft limiting
06/02/2005US20050117759 Audio downmix apparatus with dynamic-range control and method for the same
06/02/2005US20050117758 Audio outputting apparatus and audio outputting method
06/01/2005EP1536637A1 Audio outputting method and apparatus
06/01/2005CN1622451A Audio outputting apparatus and audio outputting method
05/2005
05/26/2005WO2005048644A2 System and method for controlling audio output
05/26/2005WO2005048242A1 System and method for audio signal processing
05/26/2005US20050110479 Gain and phase detector having dual logarithmic amplifiers
05/25/2005EP1532734A2 Acoustical virtual reality engine and advanced techniques for enhancing delivered sound
05/25/2005CN1620190A Signal converter, output amplifying device, audio apparatus, and transmitting and receiving system
05/25/2005CN1620142A Reversible wavelet transform and embedded codestream manipulation
05/19/2005US20050108008 System and method for audio signal processing
05/19/2005US20050105717 Telephony interface apparatus
05/12/2005US20050100179 System and method for controlling audio output
05/11/2005CN1615580A A method for decreasing the dynamic range of a signal and electronic circuit
05/11/2005CN1201551C 阻抗阻塞滤波器电路 An impedance blocking filter circuit
05/10/2005US6892177 Method and system for adjusting the dynamic range of a digital-to-analog converter in a wireless communications device
05/04/2005CN1613189A Wireless receiver without AGC
04/2005
04/28/2005US20050089178 Signal converter, output amplifying device, audio apparatus, and transmitting and receiving system
04/20/2005EP1523805A2 Circuit arrangement for reducing the dynamic range of audio signals
04/19/2005US6882735 Dynamic range compression of an audio signal
04/14/2005US20050079837 Wireless receiver without agc
04/14/2005US20050078840 Methods and systems for determining audio loudness levels in programming
04/12/2005US6879204 Exponential conversion circuit
04/07/2005US20050073362 Linear decibel-scale variable gain amplifier
03/2005
03/31/2005US20050068087 Exponential conversion circuit
03/31/2005DE19818020B4 Signalkomprimierungsschaltung Signal compression circuit
03/31/2005DE102004036536A1 Linear-in-decibel variable gain amplifier
03/24/2005WO2005027341A1 System and method of digital volume control
03/22/2005CA2342155C Linear traveling wave tube amplifier utilizing input drive limiter for optimization
03/17/2005US20050057305 Radio frequency low noise amplifier with automatic gain control
03/17/2005US20050057298 Demodulating logarithmic amplifier and method of amplification
03/17/2005US20050057297 Demodulating logarithmic amplifier and method of amplification
03/15/2005US6867650 Variable gain amplifier circuit
03/10/2005US20050053248 Audio signal processing circuit for reducing noise in an audio signal
03/10/2005US20050052216 Logarithmic linear variable gain CMOS amplifier
03/09/2005EP1513252A1 Logarithmic linear variable gain CMOS amplifier
03/09/2005EP1512237A2 Method and system for all digital gain control
03/03/2005US20050047613 System and method for digital volume control
03/03/2005US20050047499 System and method for measuring the response time of a differential signal pair squelch detection circuit
03/03/2005US20050046479 Linear-in-decibel variable gain amplifier
02/2005
02/10/2005WO2004098053A3 Volume and compression control in movie theaters
02/10/2005US20050031141 Timer ramp-up circuit and method for a sound masking system
02/08/2005US6853242 Power supply based audio compression for digital audio amplifier
02/04/2005CA2436624A1 Timer ramp-up circuit and method for a sound masking system
01/2005
01/27/2005WO2004086611A3 Systems and methods for implementing a sample rate converter using hardware and software to maximize speed and flexibility
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