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)
02/2014
02/26/2014CN103607678A Wireless synchronous loudspeaker box
02/26/2014CN103607676A Drive-by-wire device used for earphones and earphones
02/26/2014CN102197660B Acoustic oscillator and image generation device
02/26/2014CN101803401B Digital speaker driving device, digital speaker device, digital actuator, plane display device and portable electronic device
02/26/2014CN101442695B Microphone system, sound input apparatus and method for manufacturing the same
02/25/2014US8660276 Driving circuit for a sound outputting apparatus
02/25/2014US8660275 Microphone non-uniformity compensation system
02/25/2014US8660274 Beamforming pre-processing for speaker localization
02/25/2014US8660272 Parameter setting method and audio apparatus
02/23/2014CA2824678A1 Switching mode amplifier operation
02/22/2014CA2823496A1 Synchronizing audio in a bank of gaming machines
02/20/2014WO2014028206A1 Headset type detection and configuration techniques
02/20/2014WO2014027792A1 Sound conversion apparatus having independent electric signal processing function
02/20/2014WO2014027467A1 Electroacoustic transducer device
02/20/2014WO2014026430A1 Doll circuit and doll
02/20/2014US20140050332 Method and system for obtaining an audio signal
02/19/2014EP2699019A1 Digital speaker system
02/19/2014CN203446025U Wireless multifunctional sound collection emitter
02/19/2014CN203446013U No-polarity frequency-dependent no-contact horn circuit
02/19/2014CN203446012U Audio signal processing circuit used for wireless communication terminal and wireless communication terminal
02/19/2014CN203445997U Microphone active noise reduction device
02/19/2014CN103597859A 阵列话筒装置和增益控制方法 Array microphone device and the gain control method
02/19/2014CN103597854A 超声波传感器装置 Ultrasonic sensor device
02/19/2014CN103596112A Method and apparatus for determining an amplification factor of a hearing aid device
02/19/2014CN103596108A Voice frequency transferring system and device
02/19/2014CN103596107A Multimedia MP3 radio sound equipment timing shutdown soft voice processing technology device and multimedia MP3 radio sound equipment timing shutdown soft voice processing technology
02/19/2014CN103596106A Audio signal processing circuit and audio signal processing method
02/19/2014CN103596105A Audio frequency port identification circuit and user equipment
02/19/2014CN103596102A Device for regulating tone quality and terminal equipment
02/19/2014CN103596093A Wireless headset
02/19/2014CN101635877B System for reducing acoustic feedback in hearing aids using inter-aural signal transmission
02/18/2014US8654990 Multiple microphone based directional sound filter
02/13/2014WO2014024248A1 Beam-forming device
02/13/2014WO2014024009A1 Spatial audio user interface apparatus
02/13/2014WO2014023363A1 Mems microphone and method of operating the mems microphone
02/13/2014US20140044293 Wirelessly powered audio devices
02/13/2014US20140044281 Wirelessly powered audio devices
02/13/2014US20140044279 Multi-microphone audio source separation based on combined statistical angle distributions
02/13/2014US20140044277 Wireless audio transmission system, receiver, video camera and audio mixer
02/13/2014US20140044275 Active noise control with compensation for error sensing at the eardrum
02/13/2014US20140044274 Estimating Direction of Arrival From Plural Microphones
02/13/2014US20140044273 Direct sound extraction device and reverberant sound extraction device
02/13/2014DE10209807B4 Gegensprechanlage für ein Wohn- oder Mietshaus Intercom system for a home or apartment building
02/13/2014DE102013211056A1 Intelligentes hintergrundschall-überwachungssystem Intelligent background noise-monitoring system
02/12/2014EP2696597A1 Method and system for noise reduction, smart control method and device, and communication device
02/12/2014EP2695399A1 Paired microphones for rejecting noise
02/12/2014EP2695398A1 Rejecting noise with paired microphones
02/12/2014CN203435145U Wireless-connection induction sound box
02/12/2014CN203435138U High-sensitivity pickup sensor circuit
02/12/2014CN203435137U Circuit for eliminating shutdown POP sound of audio power amplifier
02/12/2014CN203435136U Audio frequency amplifier integrated with USB power supply interface
02/12/2014CN203435135U Power amplifier system and switching power supply and sound box thereof
02/12/2014CN203435134U Audio card based on wireless network
02/12/2014CN203435133U Current noise suppression circuit and mobile terminal
02/12/2014CN203435132U Noise cancelling equipment and noise cancelling system
02/12/2014CN203435131U Media controller
02/12/2014CN203434976U Electronic communication equipment
02/12/2014CN203434943U Multifunctional intelligent integrated circuit power amplification system
02/12/2014CN103583054A Sound acquisition via the extraction of geometrical information from direction of arrival estimates
02/12/2014CN103581811A Self-adaptive sound producing electronic loudspeaker and method thereof
02/12/2014CN103581803A Intelligent ambient sound monitoring system
02/12/2014CN103581802A Earphone power self-adaption circuit and mobile terminal
02/12/2014CN103581801A Bluetooth headset serving as Bluetooth audio receiver of vehicle-mounted loudspeaker box
02/12/2014CN103581800A Device capable of preventing reverse connection of single-end audio input interface
02/12/2014CN103581799A Digital power amplifier and audio-visual system with digital power amplifier inside
02/12/2014CN103581798A Method and device for outputting information
02/12/2014CN103581797A Loudspeaker driving circuit and steering device switch input detection circuit
02/12/2014CN103581796A Headphone device, wearing state detection device, and wearing state detection method
02/12/2014CN103581795A Audio device with mute function
02/12/2014CN103581794A Power management circuitry in peripheral accessories of audio devices
02/12/2014CN103581793A Buffering device for acousto-electric conversion unit
02/12/2014CN103581791A Mobile apparatus and control method thereof
02/12/2014CN103580631A Automatic loudness control
02/12/2014CN103580621A Electronic device and method for regulating output power thereof
02/12/2014CN102056052B Audio switching circuit and mobile terminal with same
02/12/2014CN101640829B Digital preamplifier for MEMS microphone
02/11/2014US8649534 Audio interface device and method
02/11/2014US8649529 Apparatus, method and computer program for localizing a sound source
02/11/2014US8649528 Microphone unit with internal A/D converter
02/11/2014US8649527 Amplifier circuit, electronic device, method for configuring an amplifier circuit
02/11/2014CA2795189C Automatic gain control
02/11/2014CA2628524C Sound tuning method
02/11/2014CA2518640C Method and apparatus for multi-sensory speech enhancement on a mobile device
02/06/2014WO2014020921A1 Device for estimating placement of physical objects
02/06/2014US20140038664 Mobile apparatus and control method thereof
02/06/2014US20140037115 MEMS Apparatus Disposed On Assembly Lid
02/06/2014US20140037111 Semantic audio track mixer
02/06/2014US20140037104 Display apparatus, display system, and control method thereof
02/06/2014US20140037101 Headphone device, wearing state detection device, and wearing state detection method
02/06/2014US20140037094 System and method for estimating a reverberation time
02/05/2014EP2693773A1 Oscillator and electronic device
02/05/2014EP2693772A1 Oscillator
02/05/2014EP2693771A1 Oscillator and electronic device
02/05/2014EP2693762A2 Display apparatus, display system, and control method thereof
02/05/2014EP2692155A1 Audio precompensation controller design using a variable set of support loudspeakers
02/05/2014EP2692151A1 Electret microphone
02/05/2014EP2692148A1 Measuring transducer displacement
02/05/2014CN203423796U Microphone amplifier with micro power consumption and high sensitivity
02/05/2014CN203423795U Additional circuit of audio frequency amplifier applied for eliminating emitter output stage
02/05/2014CN203423794U Signal transmission device having function of absorbing micro pulse waves
1 ... 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 ... 182