H04R 3 - Circuits for transducers

Patents for H04R 3 - Circuits for transducers (18,190)
11/2002
11/21/2002	WO2002093737A1 Multiplication coefficient supplement device, multiplication coefficient supplement method, and multiplication factor supplement program
11/21/2002	WO2002092392A1 Motor vehicle having a number of seats
11/21/2002	WO2002074008A8 Improvements in noise cancellation
11/21/2002	WO2002048997A3 Electroacoustic apparatus having ringing signal generation means capable of producing a subjective bass perception
11/21/2002	US20020173963 Sound generator circuit pre-filter system and method
11/21/2002	US20020173950 Circuit for improving the intelligibility of audio signals containing speech
11/21/2002	US20020172384 Semiconductor electret capacitor microphone
11/21/2002	US20020172378 Softclip method and apparatus
11/21/2002	US20020172376 Output processing system and method
11/21/2002	US20020172375 Ultrasound based parametric loudspeaker system
11/21/2002	US20020172374 Noise extractor system and method
11/21/2002	CA2446645A1 Parametric virtual speaker and surround-sound system
11/21/2002	CA2445463A1 Apparatus for electric to acoustic conversion
11/20/2002	EP1258865A2 Device for improving the intelligibility of audio signals containing speech
11/20/2002	EP1258169A2 Infrabass
11/20/2002	EP1258168A1 Method and device for comparing signals to control transducers and transducer control system
11/19/2002	US6483924 Acoustic elements and method for sound processing
11/14/2002	WO2002013574A3 Bending wave loudspeaker
11/14/2002	US20020168079 Microphone mount
11/14/2002	US20020168078 Microphone mount
11/14/2002	US20020168072 Variable damping circuit for a loudspeaker
11/14/2002	DE10123179A1 Multiple-seating type vehicle, especially people carrier, has interior communication system with microphones for first group of seats and corresponding speaker at second group of seats
11/13/2002	EP1257146A2 Method and system of sound processing
11/12/2002	US6480824 Method and apparatus for canceling noise in a microphone communications path using an electrical equivalence reference signal
11/12/2002	US6479742 Audio system in electronic musical instrument
11/07/2002	WO2002089521A2 Microphone-tailored equalizing system
11/07/2002	US20020164039 Method for controlling multi-mode audio gain balance
11/07/2002	DE10117529A1 Ultraschallbasiertes parametrisches Lautsprechersystem Ultrasound-based parametric loudspeaker system
11/06/2002	EP1255349A2 Low pass filter for output of d-class amplifier
11/06/2002	EP1254513A2 Signal processing system and method
11/06/2002	CN2520087Y 音频信号处理装置 Audio signal processing means
11/06/2002	CN1378764A Modulator processing for parametric speaker system
11/05/2002	US6477255 Audio system
10/2002
10/31/2002	US20020161577 Audio source position detection and audio adjustment
10/31/2002	US20020159606 Electrodynamic transducer with acceleration control
10/31/2002	US20020159603 Picked-up-sound reproducing method and apparatus
10/31/2002	US20020159585 Arrangement for suppressing aninterfering component of an input signal
10/31/2002	DE10218508A1 Video camera records first audio signals and second audio signal derived from first signals so that first signals and second signal can be reproduced mutually independently
10/30/2002	EP1253803A2 System and method for controlling the phase relationship
10/30/2002	EP1252796A1 System and method for dual microphone signal noise reduction using spectral subtraction
10/30/2002	CN1377566A 扬声器装置 Speaker system
10/29/2002	US6473509 Audio system, in particular for motor vehicles
10/29/2002	CA2126526C Diaphragm for use with an electro-acoustic transducer and method of producing the same
10/24/2002	WO2002085066A1 Directional controller and a method of controlling a hearing aid
10/24/2002	US20020154785 Adjusting a loudspeaker to its acoustic environment: the ABC system
10/24/2002	DE10119094A1 Low frequency audio circuit for reproduction of audio signals via loudspeakers having limited bass output, reproduces harmonics selected to give impression of clean fundamentals
10/24/2002	DE10118653A1 Verfahren zur Geräuschreduktion mit selbststeuernder Störfrequenz A method of noise reduction with self-regulating interference frequency
10/23/2002	EP1251493A2 Method for noise reduction with self-adjusting spurious frequency
10/23/2002	EP1250703A1 Noise reduction apparatus and method
10/23/2002	CN2518287Y Voice variable telephone earphone
10/23/2002	CN1376013A Audio-frequency circular sound power management switchover
10/23/2002	CN1375925A Electronic volume circuit
10/22/2002	US6468217 Method and apparatus for performing real-time storage of ultrasound video image information
10/17/2002	WO2002082422A2 Active noise cancelling headset and devices with selective noise suppression
10/17/2002	US20020150263 Signal processing system
10/17/2002	US20020150255 Bass compensation device and a sound system using the device
10/17/2002	US20020149070 MEMS based acoustic array
10/15/2002	US6466832 High quality wireless audio speakers
10/15/2002	US6466674 Method and apparatus for eliminating audio feedback
10/10/2002	WO2002080615A2 Ear microphone apparatus and method
10/10/2002	WO2001069968A3 Adaptive microphone matching in multi-microphone directional system
10/10/2002	US20020146138 Ultrasound based parametric multi-path loudspeaker system
10/10/2002	US20020146135 Loudspeaker protection circuit responsive to temperature of loudspeaker driver mechanism
10/10/2002	CA2443195A1 Ear microphone apparatus and method
10/09/2002	EP1248492A2 Ultrasonic parametric multiway speaker system
10/09/2002	EP1248491A2 Ultrasonic parametric speaker system
10/09/2002	EP1247421A1 Piezoelectric film sonic emitter
10/09/2002	EP1247350A1 Parametric audio system
10/09/2002	EP0843951B1 Circuit, audio system and method for processing signals
10/09/2002	CN2515912Y 无线耳机 Wireless Headset
10/03/2002	WO2002078390A2 A method and system for transmitting and/or receiving audio signals with a desired direction
10/03/2002	WO2002078388A2 Method and apparatus to create a sound field
10/03/2002	WO2002047433A3 Loudspeaker systems
10/03/2002	WO2001091314A3 Method and means for receiving a digital transmission comprising a plurality of digital audio signals and for simultaneous reproduction of these signals as analog audio programmes
10/03/2002	WO2001018786A9 Sound system and method for creating a sound event based on a modeled sound field
10/03/2002	US20020143242 Sensor for detecting changes within a human ear and producing a signal corresponding to thought, movement, biological function and/or speech
10/03/2002	US20020142803 Mobile communication terminal and car mounted electronic device
10/03/2002	US20020141605 Sub woofer system
10/03/2002	US20020141602 Ear microphone apparatus and method
10/03/2002	US20020141601 DVE system with normalized selection
10/03/2002	US20020141599 Active noise canceling headset and devices with selective noise suppression
10/03/2002	US20020141595 System and method for audio telepresence
10/02/2002	EP0793896B1 Audio signal reproduction apparatus
10/02/2002	CN2514599Y Multi-voice frequency output device
10/01/2002	US6459798 Sound-collecting device
09/2002
09/26/2002	WO2002076143A2 Solid angle cross-talk cancellation for beamforming arrays
09/26/2002	WO2002075722A1 A voice command identifier for a voice recognition system
09/26/2002	WO2001076063A3 Method for processing an input signal for producing an output signal and an application of said method in hearing aids and devices
09/26/2002	US20020138257 Apparatus and methods for reducing noise audible from a speaker
09/26/2002	US20020136416 DVE system with instability detection
09/26/2002	US20020136328 Signal separation method and apparatus for restoring original signal from observed data
09/26/2002	CA2440999A1 Solid angle cross-talk cancellation for beamforming arrays
09/25/2002	EP1244226A2 Transmitter for connection to an audio device
09/25/2002	EP0870369A4 Enhanced concert audio process utilizing a synchronized headgear system
09/25/2002	CN1371588A Electric signal processing for electroacoustic transducer
09/19/2002	WO2002074010A1 Microphone equipped with a range finder
09/19/2002	WO2002074008A2 Improvements in noise cancellation
09/19/2002	US20020131611 `Audio surround sound power management switching
09/19/2002	US20020131608 Method and system for providing digitally focused sound
09/19/2002	US20020131580 Solid angle cross-talk cancellation for beamforming arrays

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