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)
11/2007
11/01/2007WO2007123048A1 Adaptive array control device, method, and program, and its applied adaptive array processing device, method, and program
11/01/2007WO2007123047A1 Adaptive array control device, method, and program, and its applied adaptive array processing device, method, and program
11/01/2007WO2007086000A3 Device and method for adapting an audio signal to a transducer unit
11/01/2007WO2007085975A3 Sound reproduction
11/01/2007WO2006055671A3 Crossover circuit for reducing impedance response variance of a speaker
11/01/2007US20070253579 Dual mode headset device
11/01/2007US20070253573 Hearing instrument with source separation and corresponding method
11/01/2007US20070253570 Microphone System
11/01/2007US20070253559 Processing audio input signals
10/2007
10/31/2007EP1850630A2 Miniature speaker with integrated signal processing electronics
10/31/2007EP1850628A1 Bone-conduction speaker set, electronic device, electronic translation system, auditory sensation system, navigation device, and portable telephone
10/31/2007EP1224037B1 Method and apparatus to direct sound using an array of output transducers
10/31/2007DE102004053776B4 Verfahren zur Verstärkung eines Akustiksignals und entsprechendes Akustiksystem A method for amplifying an acoustic signal and corresponding acoustic system
10/31/2007DE102004040696B4 Notrufeinrichtung Emergency equipment
10/31/2007CN200969673Y Earphone silent circuit and television set having the same
10/31/2007CN200969668Y Multifunctional economic loudspeaker
10/31/2007CN200969667Y Portable amplifier
10/31/2007CN200969664Y Minisize waterproof vehicle mounted audio-frequency amplifier
10/31/2007CN200969214Y Electronic horn for motor vehicle
10/31/2007CN101064975A Vehicle communication system
10/31/2007CN100346669C Non-microphone voice transmission device
10/30/2007US7289638 Electroacoustic microphone
10/30/2007US7289637 Method for automatically adjusting the filter parameters of a digital equalizer and reproduction device for audio signals for implementing such a method
10/30/2007US7289633 System and method for integral transference of acoustical events
10/30/2007US7288934 Electronic device incorporating magnetoresistive elements for sensing both N and S magnetic poles
10/25/2007WO2007119362A1 Audio circuit
10/25/2007WO2007025265A3 Method and apparatus for improving noise discrimination using enhanced phase difference value
10/25/2007DE102005061018B4 Vorrichtung zur Anschlussprüfung von Lautsprechern eines Audiosystems Apparatus for testing connection of speakers of an audio system
10/24/2007EP1848243A1 Multi-channel echo compensation system and method
10/24/2007EP1428207B1 Active noise filtering for voice communication systems
10/24/2007CN200966148Y Three-independent circuit filter power supply for the audio system
10/24/2007CN200966147Y 语音功率放大器 Voice PA
10/24/2007CN200966146Y Music player for microwave oven
10/24/2007CN200966145Y Load tracing servo circuit
10/24/2007CN101061744A Audio signal enhancement
10/24/2007CN101061743A Method and apparatus for audio signal enhancement
10/24/2007CN101060724A A method for avoiding the hearing injury of audio equipment and electro-acoustic device made through this method
10/24/2007CN100345182C Active vibratory noise control apparatus
10/23/2007US7287154 Electronic boot up system and method
10/23/2007US7286675 Audio signal processors
10/23/2007US7286674 Method for designing a modal equalizer for a low frequency audible range especially for closely positioned modes
10/23/2007US7286073 Device for detecting operation of operator on sound control apparatus
10/23/2007CA2397009C Directional audio signal processing using an oversampled filterbank
10/18/2007WO2007116802A1 Output control device, output control method, output control program, and recording medium
10/18/2007WO2007116658A1 Speaker device
10/18/2007WO2007054888A3 Device for and method of generating a vibration source-driving-signal
10/18/2007US20070242843 Ultrasonic Transducer and Ultrasonic Speaker Using the Same
10/18/2007US20070242839 Remote wireless microphone system for a video camera
10/18/2007US20070242835 Tinnitus rehabilitation device and method
10/18/2007US20070242832 Acoustical Signal Processing Apparatus
10/17/2007EP1076928A4 User adjustable volume control that accommodates hearing
10/17/2007EP1057366A4 Microphone apparatus for producing signals for surround reproduction
10/17/2007EP1057365A4 Personal sound masking system
10/17/2007CN200962662Y Head-worn earphone
10/17/2007CN200962659Y 移动电话 Mobile telephone
10/17/2007CN101057523A Microphone system
10/17/2007CN101056477A Radio attached audio energy converter
10/17/2007CN100343837C Identification system and method for recognizing any one of a number of different types of devices
10/17/2007CN100342860C Actacid composition
10/11/2007WO2007113951A1 Av processor and program
10/11/2007WO2007113718A1 A device for and a method of processing data
10/11/2007WO2007113487A1 Ambient noise-reduction control system
10/11/2007US20070237345 Method for reducing phase variation of signals generated by electret condenser microphones
10/11/2007US20070237344 Microphone enhancement device
10/11/2007US20070237343 Sound Enhancement
10/11/2007US20070237340 Microphone for Surround-Recording
10/11/2007US20070237339 Environmental noise reduction and cancellation for a voice over internet packets (VOIP) communication device
10/11/2007US20070237338 Method and apparatus to improve voice quality of cellular calls by noise reduction using a microphone receiving noise and speech from two air pipes
10/11/2007US20070237334 System and method for enhancing audio output of a computing terminal
10/11/2007DE202007008142U1 Infrarot-Zweiweg-Übertragungsfeststellvorrichtung für ein kabelloses Mikrofon und einen Empfänger Infrared two-way transmission locking device for a wireless microphone and a receiver
10/11/2007DE102006016808A1 Luftschallwiedergabeanordnung Airborne sound reproducing device
10/10/2007EP1843626A2 Semiconductor electret capacitor microphone
10/10/2007EP0903055B1 Method and apparatus for localization of an acoustic source
10/10/2007CN101053152A Audio tuning system
10/10/2007CN101052242A Method for automatically equalizing a sound system
10/10/2007CN101052241A Crosstalk clearing system, method for keeping tone quality and its parameter design method
10/10/2007CN101052240A Control device and method for speaker output of portable computer
10/10/2007CN101052239A High frequency circuit and its method for eliminating earphone noise
10/10/2007CN101052236A Earphone for playing audio frequency file
10/10/2007CN101052111A Stereo playing system for mobile TV
10/10/2007CN101051985A Method for realizing virtual special net access
10/10/2007CN101051961A Loopback control method and device
10/10/2007CN101051931A System and method for realizing business protection using LCAS protocol
10/10/2007CN101051855A Remote control wireless earphone
10/10/2007CN101051084A Acoustic energy sending method by phase inversion
10/04/2007WO2007111405A1 Electroacoustic transducer having multi-channel diaphragm and hearing aid using the same
10/04/2007WO2007111134A1 Operation panel and information device
10/04/2007WO2007110851A2 Method of switching thousands of groups in musical software samplers
10/04/2007WO2007110693A1 Sony ericsson mobile communications ab
10/04/2007WO2007110252A1 Method for determining the position of a moving part in an electroacoustic transducer
10/04/2007WO2007109840A1 Improved multi-band loudspeaker system
10/04/2007WO2007109830A1 Volume control device and distributed audio system
10/04/2007US20070230734 Monitor Transducer System and Manufacturing Method Thereof
10/04/2007US20070230718 Apparatus with Speaker
10/04/2007US20070230717 Condenser microphone circuit
10/04/2007US20070230713 Tinnitus rehabilitation device and method
10/04/2007US20070229169 Single supply direct drive amplifier
10/04/2007DE112005002045T5 Schaltung zur Schwingungs- und Echounterdrückung und Mikrofon-Lautsprecher-Einheit Circuit for vibration reduction and echo cancellation and microphone-speaker unit
10/03/2007CN200956662Y Signal level adjustment apparatus
10/03/2007CN101048015A Condenser microphone circuit
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