H04R 3 - Circuits for transducers

Patents for H04R 3 - Circuits for transducers (18,190)
11/2009
11/18/2009	CN101583061A Micro speaker with directional transaudient function
11/18/2009	CN101583059A Noise-cancelling headphone
11/18/2009	CN101582278A Audio processor
11/18/2009	CN101582260A Non-amplitude modulation speech coding method and device in electrical cochlea
11/17/2009	US7620189 Polarization voltage setting of microphones
11/17/2009	US7620060 Method for automatically configuring terminal equipment
11/17/2009	CA2509850C Modular loudspeaker
11/12/2009	WO2009135815A1 Fast precision charge pump
11/12/2009	WO2009117474A3 Systems and methods for detecting wind noise using multiple audio sources
11/12/2009	WO2009093866A3 A method and an apparatus for processing an audio signal
11/12/2009	US20090279717 Circuit module for a condenser microphone
11/12/2009	US20090279716 Vibration generator for electronic device having speaker driver and counterweight
11/12/2009	US20090279715 Method, medium, and apparatus for extracting target sound from mixed sound
11/12/2009	US20090279714 Apparatus and method for localizing sound source in robot
11/11/2009	EP2115912A1 System and method for intelligent equalization
11/11/2009	CN101577848A Supper bass boosting method and system
11/11/2009	CN101577847A 信号处理设备和信号处理方法 The signal processing apparatus and signal processing method
11/11/2009	CN101577531A Voltage limiting device
11/11/2009	CN100559471C Multi-mode audio processors and methods of operating the same
11/11/2009	CN100559461C Device and method for voice activity detection
11/10/2009	US7617099 Noise suppression by two-channel tandem spectrum modification for speech signal in an automobile
11/10/2009	US7616768 Vehicle accessory microphone having mechanism for reducing line-induced noise
11/10/2009	US7616767 Method and device for determining acoustical transfer impedance
11/05/2009	WO2009134127A1 Composite microphone, microphone assembly and method of manufacturing those
11/05/2009	WO2009133948A1 Audio processing device and audio processing method
11/05/2009	WO2009132646A1 A method of combining at least two audio signals and a microphone system comprising at least two microphones
11/05/2009	US20090274324 Microphone unit and method of manufacturing the same
11/05/2009	US20090274318 Audio conference device
11/04/2009	EP2114085A1 Composite microphone, microphone assembly and method of manufacturing those
11/04/2009	EP2113913A1 Method and system for reconstituting low frequencies in an audio signal
11/04/2009	CN201341216Y Flame-proof and intrinsic safe type mining sound box
11/03/2009	US7613530 Apparatus and program for setting signal processing parameter in an audio mixer
11/03/2009	US7613310 Audio input system
11/03/2009	US7613309 Interference suppression techniques
11/02/2009	CA2664886A1 Enclosure and enclosure system for a speaker of an electronic device
10/2009
10/29/2009	WO2009131772A1 Hearing assistance apparatus
10/29/2009	WO2009131658A2 An electrical system for a speaker and its control
10/29/2009	WO2009130513A1 Two microphone noise reduction system
10/29/2009	WO2009130388A1 Calibrating multiple microphones
10/29/2009	WO2009094390A3 Automatic gain control for implanted microphone
10/29/2009	US20090269036 Audio output system control method and audio output system
10/29/2009	US20090268933 Hearing system with enhanced noise cancelling and method for operating a hearing system
10/29/2009	US20090268929 Voice output device and method, program, and room
10/29/2009	US20090268926 Semiconductor integrated circuit and condenser microphone
10/29/2009	US20090268925 Microphone arrangement
10/29/2009	US20090268920 Cardioid beam with a desired null based acoustic devices, systems and methods
10/29/2009	US20090268899 Sound pickup apparatus and conference telephone
10/29/2009	US20090268881 Calling Party Announcement Apparatus
10/29/2009	DE202009009804U1 Headset und Hörer Headset and the handset
10/29/2009	CA2645880A1 Wireless transmission-av system of outdoor furniture
10/28/2009	EP2111707A1 Sound reproducing system with superimposed digital signal
10/28/2009	EP1317871B1 Improved directional microphone system
10/28/2009	CN101569210A Audio processing system
10/28/2009	CN101569209A Noise extraction device using microphone
10/28/2009	CN101568051A Method and device for restoring acoustical signal by using laser
10/28/2009	CN101568000A 电视接收机 TV receiver
10/28/2009	CN100556219C Device and method for extracting and conveying modulated AC signal information
10/28/2009	CN100556203C Audio amplifier local interface system
10/28/2009	CN100553557C System and method for reducing auditory perception of noise associated with a medical imaging process
10/27/2009	US7609841 Frequency shifter for use in adaptive feedback cancellers for hearing aids
10/22/2009	WO2009129008A1 Multi-channel acoustic echo cancellation system and method
10/22/2009	WO2009128566A1 Sound pickup apparatus and conference telephone
10/22/2009	US20090262956 Microphones with equal sensitivity
10/22/2009	DE102008017054A1 Method for reducing distortions in sound reproduction of loudspeaker, involves feeding audio input signal by moving coil, where position of moving coil is continuously measured
10/21/2009	CN201332495Y Intelligent power distribution device of sound engineering
10/21/2009	CN201332385Y Digital audio power amplifier and audio processing device
10/21/2009	CN101563938A A device for and a method of processing audio data
10/21/2009	CN100553371C Array type micro-electromechanic capacitor microphone
10/21/2009	CN100553312C High-power digital power amplifier integrated system for digital film player
10/21/2009	CN100552775C Nondestructive voice quality stereo echo cancelling method
10/20/2009	US7606626 Speaking thermometer
10/20/2009	US7606376 Automotive audio controller with vibration sensor
10/15/2009	WO2009126561A1 Surround sound generation from a microphone array
10/15/2009	WO2009126410A2 Integrated latency detection and echo cancellation
10/15/2009	WO2009125903A1 A cochlea implant system in ite (in the ear) type using infrared data communication
10/15/2009	WO2009125840A1 Audio signal processing device and audio signal processing method
10/15/2009	WO2009125567A1 Sound reproducing device using insert-type earphone
10/15/2009	WO2009125326A1 Generation of a drive signal for sound transducer
10/15/2009	WO2009124618A1 Apparatus for processing an audio signal
10/15/2009	WO2009124550A1 An audio system with feedback cancellation
10/15/2009	CA2720560A1 A cochlea implant system in ite (in the ear) type using infrared data communication
10/14/2009	EP2109328A1 Apparatus for processing an audio signal
10/14/2009	EP2108235A1 Circuit arrangement for a sound reproducer with linearized sound transmission
10/14/2009	CN201328190Y Clear tunnel broadcasting system
10/14/2009	CN201328180Y Silencing device capable of eliminating popcorn noise
10/14/2009	CN201328179Y Controller for vibration music-visic device
10/14/2009	CN201328172Y Audio play device and terminal
10/14/2009	CN101558659A Volume and tone control in direct digital speakers
10/14/2009	CN101557060A Audio transiting wire
10/14/2009	CN101556466A Method for automatically searching and fixing natural frequency of electric horn of motor vehicle
10/14/2009	CN100550602C Method of generating test tone signal and test-tone-signal generating circuit
10/14/2009	CN100550131C Method and device for extending the audio signal band
10/13/2009	US7602927 Guitar amplifier with channel-dedicated power switching
10/13/2009	US7602926 Stationary spectral power dependent audio enhancement system
10/13/2009	US7602925 Audio feedback processing system
10/13/2009	CA2491546C Integrated acoustic transducer assembly
10/13/2009	CA2460406C Sound control system
10/13/2009	CA2325244C Cordless telephone with mp3 player capability
10/08/2009	WO2009124202A2 Grouping variable media inputs to reflect a user session
10/08/2009	WO2009124197A2 Quick record function in a smart pen computing system

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