Patents for H03B 29 - Generation of noise currents and voltages (821)
12/2007
12/19/2007CN101090687A Hearing protector
12/11/2007US7308106 System and method for optimized active controller design in an ANR system
12/04/2007US7305094 System and method for actively damping boom noise in a vibro-acoustic enclosure
11/2007
11/22/2007US20070269054 Processing device, squealing sound generation method in information processing device, and computer program product
11/21/2007EP1858157A1 Spread spectrum clock generation system
11/14/2007EP1855191A2 Random number generating device
11/01/2007US20070255777 Method for Generating Random Number and Random Number Generator
11/01/2007US20070253570 Microphone System
11/01/2007US20070253568 Active noise reduction microphone placing
11/01/2007US20070253567 High frequency compensating
10/2007
10/30/2007US7289635 Structural noise source predictor
10/24/2007CN100345183C Apparatus for and method of actively controlling vibratory noise, and vehicle with active vibratory noise control apparatus
10/24/2007CN100345182C Active vibratory noise control apparatus
10/23/2007US7286021 Low power random bit generator and random number generator
10/18/2007US20070242834 Noise cancellation for wireless audio distribution system
10/11/2007US20070236299 Measuring microprocessor susceptibility to internal noise generation
09/2007
09/27/2007US20070223715 Quiet active fan for servers chassis
09/19/2007EP1256259A4 Acoustically asymmetric bandpass loudspeaker with multiple acoustic filters
09/18/2007US7272234 Multi-channel active control system and method for the reduction of tonal noise from an axial fan
09/07/2007WO2007099541A2 Quiet active fan for servers chassis
09/05/2007EP1827331A1 Hearing protector
08/2007
08/23/2007US20070195968 Noise suppression method and system with single microphone
08/22/2007CN101023584A Consumer device comprising a signal converter
08/16/2007US20070189547 Method and apparatus for echo cancellation
08/01/2007EP1814218A1 Frequency synthesizer
07/2007
07/31/2007US7251301 Methods and systems for providing a noise signal
07/25/2007EP1605880A4 Noise-shapers and filters with noise shaping quantizers and systems and methods using the same
07/24/2007US7248705 Noise reducing headphones with sound conditioning
07/19/2007US20070165838 Selective glitch detection, clock drift compensation, and anti-clipping in audio echo cancellation
07/19/2007US20070165837 Synchronizing Input Streams for Acoustic Echo Cancellation
07/12/2007WO2007079441A2 Leading edge transducer
07/11/2007CN1996759A 频率合成器 Frequency synthesizer
07/05/2007US20070154028 Audio transducer
07/05/2007US20070154026 Mute circuit for eliminating noise during power off and electronic device using the same
06/2007
06/28/2007US20070147627 Multiplexed microphone signals with multiple signal processing paths
06/19/2007US7233212 Oscillator array with row and column control
06/12/2007US7231052 Vibration-isolating and sound isolating system for vehicle
05/2007
05/31/2007WO2007062287A2 Method and apparatus for double-talk detection in a hands-free communication system
05/31/2007US20070121925 Method and apparatus for double-talk detection in a hands-free communication system
05/29/2007US7224807 System for computationally efficient active control of tonal sound or vibration
05/17/2007US20070110255 Soundproof climate controlled rack
05/01/2007US7212874 Noise-shapers and filters with noise shaping quantizers and systems and methods using the same
04/2007
04/25/2007EP1776766A2 Consumer device comprising a signal converter
04/19/2007US20070086598 Active noise control method and apparatus including feedforward and feedback controllers
04/05/2007US20070076896 Active noise-reduction control apparatus and method
03/2007
03/29/2007US20070071250 Method and device for attenuating the noise generated at the outlet of an exhaust line
03/27/2007US7197146 Microphone array signal enhancement
03/22/2007US20070064958 Diffuser and speaker using the same
03/20/2007US7194095 Anti-noise pick-up
03/20/2007US7193482 Integrated circuit with tamper detection circuit
03/20/2007US7193481 Apparatus for providing a jittered clock signal and apparatus for providing a random bit
03/13/2007US7190796 Active feedback-controlled bass coloration abatement
02/2007
02/22/2007US20070041588 Motor operation noise elimination circuit of portable multimedia player
02/22/2007US20070041576 Echo canceller and microphone apparatus
02/15/2007US20070036367 Apparatus and method of reducing noise of earphones, noise reducing earphones, and a portable audio reproducing apparatus having the same
02/14/2007EP1751847A2 System and method for optimized active controller design in an anr system
02/14/2007CN1914949A Method for adjusting adaptation control of adaptive interference canceller
02/13/2007US7177433 Method of improving the audibility of sound from a loudspeaker located close to an ear
02/06/2007CA2285643C Variable microwave cold/warm noise source
02/01/2007US20070024384 Noise signal generation by mapping random words
01/2007
01/31/2007EP1748357A1 Noise signal generation by mapping random words
01/24/2007EP1744713A2 Tuned feedforward lms filter with feedback control
01/24/2007CN2862499Y Intelligent type signal generator
01/23/2007US7167059 Circuit for generating spread spectrum clock
01/10/2007EP1143615B1 Noise sequence generator for generating a plurality of noise sequences
01/04/2007US20070003072 Ambient noise canceling physiological acoustic monitoring system & method
01/04/2007US20070003071 Active noise control system and method
01/04/2007US20070001772 Method and device for stabilizing a transfer function of a digital phase locked loop
01/02/2007US7158644 Active noise control system
12/2006
12/27/2006CN1886104A Active noise control method and apparatus including feedforward and feedback controllers
12/26/2006US7155018 System and method facilitating acoustic echo cancellation convergence detection
12/14/2006US20060279366 Generator of a pseudo-random digital flow
11/2006
11/30/2006WO2006127332A2 Fan noise control apparatus
11/30/2006US20060269078 Vehicular active noise/vibration/sound control system, and vehicle incorporating such system
11/30/2006US20060269077 Fan noise control apparatus
11/29/2006EP1727276A1 Pseudo-random digital stream generator
11/21/2006US7139401 Hard disk drive with self-contained active acoustic noise reduction
11/21/2006US7139400 Microphone calibration for active noise control system
11/09/2006US20060251267 Active sound reduction apparatus and active noise insulation wall having same
11/09/2006US20060251266 Adaptive personal active noise system
11/07/2006US7133524 Key installation system, LSI for implementing the same, and key installation method
10/2006
10/10/2006US7120259 Adaptive estimation and compensation of clock drift in acoustic echo cancellers
10/05/2006US20060222184 Multi-channel adaptive speech signal processing system with noise reduction
09/2006
09/28/2006US20060218212 Random sequence generator
09/27/2006EP1703878A1 Active noise control method and apparatus including feedforward and feedbackward controllers
09/26/2006US7113605 System and process for time delay estimation in the presence of correlated noise and reverberation
09/21/2006US20060210091 Howling canceler apparatus and sound amplification system
09/19/2006US7110551 Adaptive personal active noise reduction system
09/08/2006WO2006056856A3 Electronic sound screening system and method of accoustically improving the environment
09/08/2006WO2005112850A3 System and method for optimized active controller design in an anr system
09/07/2006US20060197618 Pulse generator and the transmitter with a pulse generator
09/06/2006EP1698208A1 Method for adjusting adaptation control of adaptive interference canceller
09/05/2006US7103188 Variable gain active noise cancelling system with improved residual noise sensing
08/2006
08/31/2006US20060192624 Apparatus and method for generation of noise signal
08/29/2006US7099906 Random bit sequence generator
08/29/2006US7098746 Voltage controlled oscillator
08/24/2006US20060188107 Active noise control system
08/24/2006US20060186957 Noise generator
08/15/2006US7092529 Adaptive control system for noise cancellation
08/10/2006WO2005115285A3 Integral active noise cancellation section
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