H04R 3 - Circuits for transducers

Patents for H04R 3 - Circuits for transducers (18,190)
09/2013
09/04/2013	CN103281653A High-fidelity field-effect tube class-A power amplifier
09/04/2013	CN103281652A Buzzer drive circuit
09/04/2013	CN103281645A Wireless headset and working method thereof
09/03/2013	US8526647 Listening device providing enhanced localization cues, its use and a method
09/03/2013	US8526633 Acoustic apparatus
09/03/2013	US8526632 Microphone array for a camera speakerphone
09/03/2013	US8526625 Stereo microphone
08/2013
08/29/2013	WO2013124490A2 Apparatus for providing an audio signal for reproduction by a sound transducer, system, method and computer program
08/29/2013	US20130223653 Wireless Microphone System With Frequency Matching Capability, And Method For Frequency Matching In A Wireless Microphone System
08/29/2013	US20130223648 Audio signal processing for separating multiple source signals from at least one source signal
08/29/2013	US20130223645 System and method for dynamic residual noise shaping
08/29/2013	US20130223641 Electronic device, accessory, and method for detecting an accessory
08/29/2013	US20130223640 Headphone, headphone stand and headphone system
08/29/2013	DE102012202921A1 Acoustic transducer e.g. direct digital transducer used in integrated switching circuit, has control device divides received digital audio data into individual samples and controls spark gap devices according to respective samples
08/28/2013	EP2632175A1 Earphone power amplifier, working method, and mobile terminal equipment
08/28/2013	EP2632174A1 A circuit for use with a loudspeaker for portable equipments
08/28/2013	EP2632173A1 Loudspeaker overload protection
08/28/2013	EP2630807A1 Systems, methods, apparatus, and computer-readable media for far-field multi-source tracking and separation
08/28/2013	CN203167347U 灯具 Lamps
08/28/2013	CN203167253U Electronic intelligent control sound equipment
08/28/2013	CN203167252U Audio power overall-amplification circuit
08/28/2013	CN203167251U Audio input device capable of providing background music
08/28/2013	CN203167250U 移动终端卡拉ok混响转换器 The mobile terminal karaoke ok reverb converter
08/28/2013	CN203167249U Power-on mute control circuit
08/28/2013	CN203167248U Shutdown mute control circuit
08/28/2013	CN203167247U Multifunctional sound box
08/28/2013	CN203167246U Portable equipment earphone interface and serial communication interface converter
08/28/2013	CN203167245U Audio processing circuit and earphone
08/28/2013	CN203167244U Audio processing circuit and earphone
08/28/2013	CN203167243U Telephone receiver type Bluetooth audio equipment capable of charging wirelessly
08/28/2013	CN203167242U Audio interface power-getting circuit and peripheral equipment
08/28/2013	CN203167241U Bluetooth multimedia integrated sound equipment
08/28/2013	CN203167240U Mining intrinsic-safe type sound box
08/28/2013	CN203167239U High-fidelity active integrated sound box with automatic denoising function
08/28/2013	CN203167238U Active integrated loudspeaker based on multi-DSP system
08/28/2013	CN203167237U Active sound box with multiple digital signal processors
08/28/2013	CN203167236U High-quality active integrated loudspeaker
08/28/2013	CN203167235U Intelligent-denoising high-quality active integrated loudspeaker
08/28/2013	CN203167234U High-fidelity active integrated loudspeaker
08/28/2013	CN203167233U Earphone denoising device
08/28/2013	CN203167229U Vehicle interior sound field equalization device
08/28/2013	CN203167209U Earphone
08/28/2013	CN203167204U Sound control microphone
08/28/2013	CN203167188U 无线音箱 Wireless Speakers
08/28/2013	CN203166889U Bluetooth audio receiver having charging and audio frequency sharing interface
08/28/2013	CN203166838U D-type audio power amplifier circuit provided with double negative feedback circuits
08/28/2013	CN203164670U Industrial control equipment having earphone communication interface
08/28/2013	CN103270776A Vibration device and electronic apparatus
08/28/2013	CN103270773A Audio control device and image capture device
08/28/2013	CN103270772A Signal processing device, signal processing method, and signal processing program
08/28/2013	CN102740188B Device and method for up-linking audio signal through audio interface
08/27/2013	US8520865 Display apparatus, projector, and control method
08/27/2013	US8520858 Sound system and method for capturing and reproducing sounds originating from a plurality of sound sources
08/26/2013	DE202013006884U1 Entzerrer-Vorverstärker mit integrierter Audio-Funkübertragungsstrecke zur kabellosen Übertragung des Audiosignals von Schallplattenspielern Equalizer preamp with integrated audio radio link for wireless transmission of audio signal from record players
08/22/2013	WO2012056427A9 Fitting an auditory prosthesis
08/22/2013	US20130216064 Multi-beam sound system
08/22/2013	US20130216063 Mobile Microphone System and Method
08/22/2013	US20130216062 Hearing apparatus having an adaptive filter and method for filtering an audio signal
08/22/2013	US20130216058 Noise suppression device
08/22/2013	US20130216050 Multiple microphone switching and configuration
08/21/2013	EP2629550A2 Hearing device with adaptive filter and method of filtering an audio signal
08/21/2013	EP2628317A1 Automatic equalization using adaptive frequency-domain filtering and dynamic fast convolution
08/21/2013	EP2628316A1 Apparatus and method for deriving a directional information and computer program product
08/21/2013	EP2628314A1 Ear canal ear bud sound system
08/21/2013	CN203151730U Wireless bluetooth sound equipment
08/21/2013	CN203151729U Multifunctional earphone
08/21/2013	CN203151728U Circuit for transferring data by using earphone interface
08/21/2013	CN203151727U USB2.0/USB3.0 power supply power automatic identification circuit
08/21/2013	CN203151726U Automatic gain control circuit for sound equipment
08/21/2013	CN203151724U Bluetooth subwoofer combined sound box
08/21/2013	CN203151710U Bluetooth earphone with wireless charging function
08/21/2013	CN203151709U Earphone and light-emitting indication circuit thereof
08/21/2013	CN203151702U Pen-shaped radio microphone
08/21/2013	CN1819712B Electroacoustic double-magnetic pole and moving coil loundspeaker with high conversion rate and acoustics, its playing and controlling circuit thereof
08/21/2013	CN103262576A Oscillator device and electronic instrument
08/21/2013	CN103262575A Oscillator device and electronic instrument
08/21/2013	CN103262573A Sound reproduction device, reproduction sound adjustment method, acoustic property adjustment device, acoustic property adjustment method, and computer program
08/21/2013	CN103262572A Howling suppression device, hearing aid, howling suppression method, and integrated circuit
08/21/2013	CN103262571A Adaptive noise cancellation
08/21/2013	CN103262570A Adaptive noise cancellation
08/21/2013	CN103262568A Electroacoustic transducer
08/21/2013	CN103260122A Integrated circuit with configurable output cell
08/21/2013	CN103260112A Vibrating device used for electroacoustic device
08/21/2013	CN103260111A Systems and methods for composite adaptive filtering
08/21/2013	CN103260110A Noise reduction apparatus, audio input apparatus, wireless communication apparatus, and noise reduction method
08/21/2013	CN103260109A Multi-channel audio signal converting device, and method of converting multi-channel audio signal
08/21/2013	CN103260108A Electronic device and method for achieving earphone compatibility
08/21/2013	CN103260101A Noise cancellation system
08/21/2013	CN103253185A Vehicular active sound effect generating apparatus
08/21/2013	CN102780949B Method and device for automatically identifying MAC (Media Access Control) pin and ground pin of audio interface
08/21/2013	CN102739183B Audio interface matching identification method and device for mobile terminal, and electronic signature tool
08/21/2013	CN102123337B Noise gate circuit system and designing method thereof
08/21/2013	CN101569209B Noise extraction device and method, microphone device, integrated circuit and camera
08/20/2013	US8515100 Programmable microphone
08/20/2013	US8515099 Capacitor microphone
08/20/2013	US8515094 Distributed signal processing systems and methods
08/20/2013	US8515093 Input signal mismatch compensation system
08/16/2013	CA2806262A1 Secure audio peripheral device
08/15/2013	WO2013119640A1 Low power microphone circuits for vehicles
08/15/2013	US20130211830 Wind suppression/replacement component for use with electronic systems

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