Patents
Sitemap › H04 - Electric communication technique › H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; Deaf-aid sets; Public address systems › H04R 3 - Circuits for transducers
Patents for H04R 3 - Circuits for transducers (18,190)
11/2005
11/24/2005DE10362073A1 Vorrichtung und Verfahren zum Verarbeiten eines Eingangssignals Apparatus and method for processing an input signal
11/24/2005DE102005019976A1 System und Verfahren zur Verringerung der hörbaren Wahrnehmung von mit einem medizinischen Bildgebungsvorgang verbundenen Geräuschen System and method for reducing the perception of audible associated with a medical imaging process noises
11/23/2005EP1599067A2 Detection and control of diaphragm collapse in condenser microphones
11/23/2005EP1547246A4 Integrated circuit with automatic polarity detection and configuration
11/23/2005CN1701632A Speaker unit and voice output device
11/23/2005CN1701630A Howling suppression device and howling suppression method
11/23/2005CN1701626A Speaker device
11/23/2005CN1700808A Alarm whistle device
11/22/2005US6968065 Multiple function, bi-directional input/output interface for sound processing system
11/22/2005US6967541 Digital pulse-width-modulation generator
11/17/2005WO2005109954A1 A method and system for adapting a loudspeaker to a listening position in a room
11/17/2005WO2005109951A1 Angular discrimination of acoustical or radio signals
11/17/2005US20050256707 Digitized audio data reproduction apparatus, and integrated circuit device to output audio signals
11/17/2005US20050256595 Digital mixer apparatus and method therefor
11/17/2005US20050254780 Parameter supply apparatus for audio mixing system
11/17/2005US20050254671 Condenser microphone
11/17/2005US20050254670 Condenser microphone
11/17/2005US20050254668 Loudspeaker arrangement
11/17/2005US20050254640 Sound pickup apparatus and echo cancellation processing method
11/17/2005US20050254347 Parallel gcs structure for adaptive beamforming under equalization constraints
11/17/2005US20050253713 Audio apparatus and monitoring method using the same
11/16/2005EP1596634A2 Sound pickup apparatus and echo cancellation processing method
11/16/2005EP1596626A1 Speaker system
11/16/2005EP1596625A1 Circuit for the control of a loudspeaker
11/16/2005EP1596624A1 A parallel GSC structure for adaptive beamforming under equalization constraints
11/16/2005EP1595427A1 Method and device for the separation of sound signals
11/16/2005EP0719493B1 Apparatus and method for reducing acoustic feedback
11/16/2005CN1698395A Sound collecting method and sound collecting device
11/16/2005CN1698094A Apparatus for focusing ultrasonic acoustical energy within a liquid stream
11/16/2005CN1697563A Circuit for the control of a loudspeaker
11/16/2005CN1695551A System and method for reducing auditory perception of noise associated with a medical imaging process
11/16/2005CN1227949C Loudspeaker polarity judging circuit and audio circuit with function of polarity judging and switching
11/15/2005US6965677 Focus fader with adjustable tension
11/15/2005US6965676 Volume-responsive loudness compensation circuits, systems, and methods
11/10/2005WO2005107314A1 Vibrating plate for electricity-sound transformer and method for producing the same, and electricity-sound transformer and equipment using the same
11/10/2005WO2005107061A1 Audio amplifier and speaker incorporating audio amplifier
11/10/2005US20050249372 Hearing aid device and corresponding operating method
11/10/2005US20050249365 Arithmetic operation method and apparatus for mixing audio signals
11/10/2005US20050249361 Selective shaping of communication signals
11/10/2005US20050249360 Systems and methods for microphone localization
11/10/2005US20050249359 Automatic microphone matching
11/10/2005US20050249355 [feedback active noise controlling circuit and headphone]
11/10/2005US20050249038 System and process for time delay estimation in the presence of correlated noise and reverberation
11/10/2005US20050248346 System and method for reducing auditory perception of noise associated with a medical imaging process
11/10/2005US20050248233 Parametric audio system
11/10/2005DE19947682B4 Nullverzögerungs-Struktur zur Subband-Echokompensation, Echokompensation und Verfahren zur Echokompensation Zero Delay structure for subband echo cancellation, echo cancellation and method for echo cancellation
11/09/2005EP1594343A2 Hearing-aid device and corresponding operating method
11/09/2005CN1694579A Signal level adjustment apparatus and control method for the adjustment apparatus
11/08/2005US6963649 Noise cancelling microphone
11/08/2005US6963647 Controlled acoustic waveguide for soundproofing
11/03/2005WO2005104611A1 Handheld device loudspeaker system
11/03/2005WO2005104610A1 Resonance frequency determining method, resonance frequency selecting method, and resonance frequency determining apparatus
11/03/2005WO2005104609A1 Sound device provided with a geometric and electronic radiation control
11/03/2005WO2005104604A1 Wiring method for preventing howling of earphone microphone
11/03/2005US20050246167 Sound source search system
11/03/2005US20050246162 Digital vocal device for multiple purposes
11/03/2005US20050246041 Audio related system communication protocol
11/03/2005US20050245221 Signal processing
11/03/2005US20050244028 Electroacoustic transducer with built in transducer circuit
11/03/2005US20050244018 Method and device for matching the phases of microphone signals of a directional microphone of a hearing aid
11/03/2005US20050242975 Self-powered digital audio devices
11/03/2005US20050242860 FFT-based multichannel video receiver
11/03/2005DE102004016184A1 Verfahren zur Vermeidung von Hörschäden und Gehörschutzeinrichtung A method for avoiding hearing loss and hearing protection device
11/02/2005EP1592282A1 Sound collecting method and sound collecting device
11/02/2005EP1591995A1 Indoor communication system for a vehicular cabin
11/02/2005CN1692677A Piezoelectric speaker, speaker system employing it, and electronic apparatus employing piezoelectric speaker
11/02/2005CN1691341A Thin film circuit substrate, piezoelectric speaker device, display device, and sound-generating display device
11/01/2005US6961438 Loudspeaker system having wide-directional characteristics
11/01/2005US6961435 Infra bass
11/01/2005US6960867 Installation with piezoelectric element for equipping a structure and piezoelectric element for same
11/01/2005US6960797 Semiconductor device
10/2005
10/27/2005WO2005101902A1 Esd protection circuit for condenser microphone
10/27/2005US20050239397 System for audio related equipment management
10/27/2005US20050239396 System for audio-related device communication
10/27/2005US20050238183 Automatic wind noise reduction circuit and automatic wind noise reduction method
10/27/2005US20050238178 Air leak self-diagnosis for a communication device
10/27/2005US20050237685 Thin film circuit substrate, piezoelectric speaker device, display device, and sound-generating display device
10/27/2005DE19704519B4 Vorrichtung zur Frequenzgangkompensation eines Audiosignals Apparatus for frequency compensation of an audio signal
10/26/2005EP1589754A2 Information processing apparatus, imaging apparatus, information processing method, and program
10/26/2005CN1689371A Delay network microphones with harmonic nesting
10/26/2005CN1689072A Method and system for processing subband signals using adaptive filters
10/26/2005CN1688179A Feed back type active noise eliminating earpiece
10/26/2005CN1225146C Regulation-free contactless electric horn of automobile
10/25/2005US6959095 Method and apparatus for providing multiple output channels in a microphone
10/20/2005WO2005099304A1 Sound volume control circuit, semiconductor integrated circuit, and sound source device
10/20/2005US20050235147 Universal microphone for secure radio communication
10/20/2005US20050234715 Method of and apparatus for reducing noise
10/20/2005US20050234711 Method and system for reducing audible side effects of dynamic current consumption
10/20/2005US20050234619 In-vehicle device
10/20/2005US20050234572 Method and system for data logging in a listening device
10/20/2005US20050232602 Audio related system link management
10/20/2005US20050232447 Microphone
10/20/2005US20050232446 Trickle-charged amplifier
10/20/2005US20050232442 Microphone system
10/20/2005US20050232441 Method for optimal microphone array design under uniform acoustic coupling constraints
10/20/2005US20050232440 Stationary spectral power dependent audio enhancement system
10/20/2005US20050232437 Vehicle audio system
10/20/2005US20050232436 Communication system using short range radio communication headset
10/20/2005US20050231873 Microphone system
10/19/2005EP1587342A2 Headphone with active noise reduction
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