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)
03/2003
03/20/2003US20030052800 Station identification for a local area augmentation system on a visual display
03/20/2003US20030052220 Visual indication of uninstalled control panel functions
03/20/2003US20030051532 Robust talker localization in reverberant environment
03/20/2003CA2459954A1 Passive and active escapement for sound resonance
03/19/2003EP1293104A1 Fft-based technique for adaptive directionality of dual microphones
03/19/2003CN1404679A Electroacoustic apparatus having ringing signal generation means capable of producing a subjective bass perception
03/18/2003US6535610 Directional microphone utilizing spaced apart omni-directional microphones
03/18/2003US6535609 Cabin communication system
03/18/2003CA2669482A1 An entertainment system for a vehicle
03/13/2003WO2003021764A2 Method and circuit for creating a sub-harmonic of a periodic signal
03/13/2003WO2003020006A2 Circuit and method for acoustic source directional pattern determination utilizing two microphones
03/13/2003US20030048911 Miniature speaker with integrated signal processing electronics
03/13/2003US20030048910 Sound masking system
03/12/2003EP1291845A2 Sound masking system
03/12/2003EP1290912A2 Method for noise suppression in an adaptive beamformer
03/12/2003CN1402952A Method and apparatus to direct sound
03/12/2003CN1402591A Voice modulating talking system and headphone therefor
03/10/2003CA2398201A1 Sound masking system
03/06/2003WO2003019846A2 Dynamic carrier system for parametric arrays
03/06/2003WO2003019775A2 Audio processing device
03/06/2003US20030044031 Multi-function actuator
03/06/2003US20030044025 Circuit and method for acoustic source directional pattern determination utilizing two microphones
03/06/2003DE20214552U1 IC engine automobile sound is recorded and played back to driver of some other type of road vehicle, such as electrical
03/06/2003CA2459109A1 Dynamic carrier system for parametric arrays
03/05/2003EP1289247A2 System and method of indicating and controlling sound pickup direction and location in a teleconferencing system
03/05/2003CN1401203A Audio system
03/05/2003CN1400847A Sound reproducer
03/04/2003US6529869 Process and electric appliance for optimizing acoustic signal reception
03/04/2003US6529787 Multimedia computer speaker system with bridge-coupled subwoofer
03/04/2003US6527723 Variable multi-dimensional apodization control for ultrasonic transducers
02/2003
02/28/2003CA2394273A1 System and method of indicating and controlling sound pickup direction and location in a teleconferencing system
02/27/2003WO2003017718A1 Post-processing scheme for adaptive directional microphone system with noise/interference suppression
02/27/2003WO2003017716A2 Speaker equalization tool
02/27/2003WO2002037816A3 Method for operating a hands-free system and/or a speakerphone in a mobile radio terminal
02/27/2003WO2002003755A3 Audiosystem for an automobile
02/27/2003US20030040908 Noise suppression for speech signal in an automobile
02/27/2003US20030040822 Sound processing system using distortion limiting techniques
02/27/2003US20030039372 Display control apparatus for displaying gain setting value in predetermined color hue
02/27/2003US20030039370 Method and apparatus for eliminating audio feedback
02/27/2003US20030039353 Echo cancellation processing system
02/26/2003EP1286175A2 Robust talker localization in reverberant environment
02/26/2003EP1285555A1 Ultra bass ii
02/26/2003EP1285554A2 Directional microphone arrangement and method for signal processing in a directional microphone arrangement
02/26/2003EP1285523A2 Electroacoustic apparatus having ringing signal generation means capable of producing a subjective bass perception
02/25/2003US6526149 System and method for reducing non linear electrical distortion in an electroacoustic device
02/25/2003US6526148 Device and method for demixing signal mixtures using fast blind source separation technique based on delay and attenuation compensation, and for selecting channels for the demixed signals
02/25/2003US6526147 Microphone array with high directivity
02/25/2003US6525993 Speaker direction detection circuit and speaker direction detection method used in this circuit
02/20/2003WO2003015468A1 Dynamic range compression using digital frequency warping
02/20/2003WO2003015460A2 Sound processing system including wave generator that exhibits arbitrary directivity and gradient response
02/20/2003WO2003015459A2 Sound processing system that exhibits arbitrary gradient response
02/20/2003WO2003015458A2 Sound processing system including forward filter that exhibits arbitrary directivity and gradient response in multiple wave sound environment
02/20/2003WO2003015457A2 Sound processing system including forward filter that exhibits arbitrary directivity and gradient response in single wave sound environment
02/20/2003WO2003015272A1 Method and apparatus for providing an error characterization estimate of an impulse response derived using least squares
02/20/2003WO2003015082A1 Sound intelligibilty enchancement using a psychoacoustic model and an oversampled fiolterbank
02/20/2003WO2002063918A3 Method for automatically adjusting the filter parameters of a digital equalizer and replay device for audio signals for carrying out such a method
02/20/2003US20030035555 Speaker equalization tool
02/20/2003US20030035552 Process and system for directional acoustic propagation
02/20/2003US20030035549 Signal processing system and method
02/19/2003EP1284586A2 Method and system for directional sound generation
02/19/2003EP1284060A2 Method and means for receiving a digital transmission comprising a plurality of digital audio signals and for simultaneous reproduction of these digital signals as analog audio programmes
02/19/2003CN1398499A Infra bass
02/19/2003CN1398054A Whistler detection and suppresser thereof, its method and computer program products
02/18/2003US6522758 Compensation system for planar loudspeakers
02/18/2003US6522757 Bass intensification device for speaker system
02/18/2003US6522756 Method for shaping the spatial reception amplification characteristic of a converter arrangement and converter arrangement
02/18/2003US6520776 Portable karaoke microphone device and karaoke apparatus
02/13/2003WO2003013189A1 Acoustic reproduction apparatus
02/13/2003WO2003013185A1 Cardioid beam with a desired null based acoustic devices, systems and methods
02/13/2003US20030031330 Woofer having ornamental flashing lights
02/13/2003US20030031329 Sound signal reproducing apparatus
02/13/2003US20030031328 Second-order adaptive differential microphone array
02/13/2003US20030031327 Method and apparatus for providing multiple output channels in a microphone
02/13/2003US20030029306 Sound system and method for creating a sound event based on a modeled sound field
02/12/2003EP1183848A4 System and method for near-end talker detection by spectrum analysis
02/12/2003EP1169883B1 System and method for dual microphone signal noise reduction using spectral subtraction
02/12/2003CN1397063A Method for control of unit comprising acoustic output device
02/11/2003US6519349 Loudspeaker
02/11/2003US6519344 Audio system
02/07/2003CA2354755A1 Sound intelligibilty enhancement using a psychoacoustic model and an oversampled filterbank
02/06/2003WO2003010998A1 Magnetic shielding of loud speaker sensing coil
02/06/2003WO2003010996A2 Sound reinforcement system having an echo suppressor and loudspeaker beamformer
02/06/2003WO2003010995A2 Sound reinforcement system having an multi microphone echo suppressor as post processor
02/06/2003US20030026437 Sound reinforcement system having an multi microphone echo suppressor as post processor
02/06/2003US20030025554 Headphone amplifier
02/05/2003EP1282335A2 Sound reproduction device
02/05/2003EP1281981A2 Directional audio recording system with indication of recording zone and/or perturbation source
02/04/2003US6516069 Microphone filter and microphone unit
02/04/2003US6516066 Apparatus for detecting direction of sound source and turning microphone toward sound source
02/03/2003WO2000068703A2 Method for localising direction and localisation arrangement
02/03/2003CA2419750A1 Method for localising direction and localisation arrangement
01/2003
01/30/2003WO2003009642A2 Method for at least two audio signals
01/30/2003WO2003009638A1 Microphone
01/30/2003WO2003009636A2 Directional sound acquisition
01/30/2003WO2002069517A9 Dve system with normalized selection
01/30/2003US20030021428 Sound reproduction device
01/30/2003US20030021427 Sound control unit and sound system
01/30/2003US20030021389 Impulse response setting method for the 2-channel echo canceling filter, a two-channel echo canceller, and a two-way 2-channel voice transmission device
01/30/2003DE10120460C1 Diagnosis method for receiver loudspeaker system connection e.g. for car radio, using variation of end stage operating point for testing bass and/or medium tone loudspeakers and test tone for testing high tone loudspeaker
01/29/2003EP1279318A2 Audio system
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