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)
12/2012
12/27/2012WO2012174986A1 Direct drive circuitry and method for hot plug detection of audio line end
12/27/2012US20120328147 Speaker
12/27/2012US20120328129 Control of a microphone
12/26/2012EP2538699A1 Control of a loudspeaker output
12/26/2012EP2538555A1 Control of a loudspeaker output
12/26/2012EP2538409A1 Noise reduction method for multi-microphone audio equipment, in particular for a hands-free telephony system
12/26/2012EP2537350A1 Processing of multi-device audio capture
12/26/2012EP2537153A1 Microphone array subset selection for robust noise reduction
12/26/2012CN202634695U Hearing-aid apparatus coupled to mobile terminal
12/26/2012CN202634684U Frequency modulator having noise suppression circuit
12/26/2012CN202634683U Earphone module of learning machine circuit
12/26/2012CN202634682U Circuit for improving dynamic performance of sound signal
12/26/2012CN202634681U Volume controller
12/26/2012CN202634680U Earphone with automatic sensing function
12/26/2012CN202634679U Voice switch detection device for self-service equipment
12/26/2012CN202634678U Noise-reduction circuit
12/26/2012CN202634677U Power amplifier control module in learning machine circuit
12/26/2012CN202634676U Power amplifier module in learning machine circuit
12/26/2012CN202634675U Multifunctional remotely-controlled microphone control circuit
12/26/2012CN202634674U Denoising device under the state of listening to music via earphone
12/26/2012CN202634671U Intelligent voice-activated system for volume of vehicular audio system
12/26/2012CN202634666U Earphone with control function
12/26/2012CN202634422U Wired interphone
12/26/2012CN102845079A Control of a microphone
12/26/2012CN102843634A Control of loudspeaker output
12/26/2012CN102843633A Control of loudspeaker output
12/26/2012CN102843632A Voice-operated circuit
12/26/2012CN102843631A Audio cable plugging-unplugging detection direct drive circuit and method
12/26/2012CN101529926B System and method for compensating memoryless non-linear distortion of an audio transducer
12/25/2012US8340320 Mute circuits
12/25/2012US8340317 Stereo audio-signal processing system
12/25/2012US8340316 Directional microphone device
12/25/2012US8340315 Assembly, system and method for acoustic transducers
12/22/2012CA2794698A1 Portable vibration speaker
12/20/2012WO2012173201A1 Audio system and audio characteristic control device
12/20/2012WO2012172775A1 Ultrasonic sensor device
12/20/2012WO2012172618A1 Array microphone device and gain control method
12/20/2012WO2012171690A1 Headphones, audio device, audio system and method for transmitting signals
12/20/2012WO2012171584A1 An audio scene mapping apparatus
12/20/2012WO2012171494A1 Audio signal transfer device
12/20/2012WO2012123898A3 Sound processing based on confidence measure
12/20/2012US20120321100 Wide Dynamic Range Microphone
12/20/2012DE102011104846A1 Electrostatic device e.g. electrostatic speaker for e.g. TV, has electrical conductive film that is connected with contact tape such that high voltage is passed from high-voltage transmission system to conductive film through cable
12/20/2012DE102010054897B4 Verstärkerschaltung für eine Zwei-Draht-Schnittstelle, Mikrofonverstärker sowie Schaltungsanordnung zur Umwandlung eines Sprachsignals Amplifier circuit for a two-wire interface, microphone and amplifier circuit arrangement for conversion of a speech signal
12/20/2012CA2839475A1 Audio signal adapter device
12/19/2012EP2536170A1 Hearing aid, signal processing method and program
12/19/2012EP2534776A1 Digital communications system with variable-bandwidth traffic channels
12/19/2012CN202617346U Ear-bone hearing aid
12/19/2012CN202617332U Network digital audio transmission board and audio network system
12/19/2012CN202617331U Intelligent karaoke singing device provided with delay prevention module
12/19/2012CN102834728A Method and system for determining the direction between a detection point and an acoustic source
12/19/2012CN102833650A AV (Audio/Video) control platform with microphone input module
12/19/2012CN102833649A Earphone interface circuit and mobile communication device
12/19/2012CN102833644A Bluetooth headset with acceleration transducer and control method of Bluetooth headrest
12/19/2012CN102158676B Electronic device, video camera apparatus, and control method therefor
12/19/2012CN101783828B Sound signal adjustment apparatus, program and method, and telephone device
12/19/2012CN101728946B Power supply unit with noise reduction capability
12/18/2012US8335328 Programmable integrated microphone interface circuit
12/18/2012US8335321 Audio signal processing apparatus, audio signal processing method and imaging apparatus
12/18/2012US8333609 Connector, multi-channel audio system, electronic apparatus, and cable for connection
12/13/2012WO2012170128A1 Generating a masking signal on an electronic device
12/13/2012WO2012169095A1 Audio signal processing device and audio signal processing method
12/13/2012US20120314885 Signal processing using spatial filter
12/12/2012CN202602877U Microphone capable of eliminating vibration noise
12/12/2012CN202602876U Circuit structure of voice control module
12/12/2012CN202602875U Passive audio anti-disclosure apparatus
12/12/2012CN202602874U Mobile terminal
12/12/2012CN202602860U Earphone with filtering function
12/12/2012CN202602842U Mine explosion-proof and intrinsic safety type sound box
12/12/2012CN202602769U Conversation type electronic product with echo inhibition function
12/12/2012CN102823273A Techniques for localized perceptual audio
12/12/2012CN102823272A Headphones
12/12/2012CN102822890A Audio device
12/12/2012CN102821341A Two-wire digital audio interface
12/12/2012CN102821340A Method and device for dynamically tuning full-audio channel as well as intelligent terminal thereof
12/12/2012CN102821339A Signal processing device and signal processing method
12/12/2012CN102821338A Circuit capable of eliminating abnormal sounds and method thereof
12/12/2012CN102820036A Method and device for eliminating noises in self-adaption mode
12/12/2012CN101803402B Sound emission/collection device
12/12/2012CN101656904B Electrostatic loudspeaker array
12/11/2012US8331584 Capacitor microphone and impedance converter therefor
12/11/2012US8331582 Method and apparatus for producing adaptive directional signals
12/11/2012US8331572 Spatial audio
12/06/2012WO2012163424A1 Assembly with an analog data processing unit and method of using same
12/06/2012WO2012163379A1 Circuit assembly for processing an electrical signal of a microphone
12/06/2012WO2012163371A1 Reducing a disturbance on a signal path of a semiconductor switch
12/06/2012US20120308052 Microphone Assembly
12/06/2012US20120308048 Communications Headset Power Provision
12/06/2012US20120308047 Self-tuning mems microphone
12/06/2012US20120308046 Class d micro-speaker
12/06/2012US20120308045 Microphone Assemblies With Through-Silicon Vias
12/06/2012US20120308040 Microphone array calibration method and apparatus
12/06/2012US20120308039 Sound source separation system, sound source separation method, and acoustic signal acquisition device
12/06/2012US20120308038 Sound Source Localization Apparatus and Method
12/06/2012US20120308037 Microelectromechanical microphone chip having stereoscopic diaphragm structure and fabrication method thereof
12/06/2012DE112008002187B4 Hinter-dem-Ohr-Hörhilfe, deren Mikrophon in einen Eingang des Ohrkanals gesetzt ist Behind-the-ear hearing aid, the microphone is placed in an entrance of the ear canal
12/06/2012DE102012208825A1 3d-audiogerät 3d audio device
12/06/2012DE102012104540A1 Subwoofer-lautstärkenregler Subwoofer volume control
12/06/2012DE102012000499A1 Sound transducer e.g. air motion transformer for public address system used in e.g. building, has fan that is provided for producing cool air for cooling membrane portion which is arranged in air gap between pole plates
12/05/2012EP2530952A2 Sound processing apparatus and parameter setting method
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