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)
04/2014
04/24/2014US20140114665 Keyword voice activation in vehicles
04/24/2014US20140112514 Variable directivity condenser microphone
04/24/2014US20140112502 Electronic device for microphone operation
04/24/2014US20140112501 Digital microphone system, audio control device, and control method thereof
04/24/2014US20140112499 Audio production console and related process
04/24/2014US20140112497 System and method for digital signal processing
04/24/2014US20140112493 Apparatus for differential interpolation pulse width modulation digital-to-analog conversion and output signal coding method thereof
04/24/2014US20140112488 Method and apparatus for canceling acoustic echo, and method for updating adaptive filter coefficient by the apparatus
04/24/2014US20140112487 Using an auxiliary device sensor to facilitate disambiguation of detected acoustic environment changes
04/24/2014US20140112486 Tube Amplifier Emulator
04/24/2014US20140112485 Stackable Communications System
04/23/2014EP2723104A1 Audio system and audio characteristic control device
04/23/2014EP2723103A1 Array microphone device and gain control method
04/23/2014EP2723054A1 Using an auxiliary device sensor to facilitate disambiguation of detected acoustic environment changes
04/23/2014EP2722942A1 Audio signal transfer device
04/23/2014DE202013000580U1 Mikrofonanordnung mit verstellbarer Richtcharakteristik für Kraftfahrzeuge Microphone array with adjustable directional characteristic for motor vehicles
04/23/2014CN203563187U Multimedia active speaker box power supply circuit
04/23/2014CN203563186U Noise reduction circuit and voice audio driving circuit provided with same
04/23/2014CN203563185U A network sound combining wall system structure
04/23/2014CN203563181U Mobile terminal having KTS sound effect
04/23/2014CN203563169U Animal-type multimedia bluetooth sound equipment with propaganda function
04/23/2014CN203563124U Audio frequency network camera
04/23/2014CN103748902A Vehicle with side wall speakers
04/23/2014CN103747403A Sound enrichment for the relief of tinnitus in dependence of sound environment classification
04/23/2014CN103747393A Control circuit of wireless microphone
04/23/2014CN103747392A Anti-distortion speaker magnetic circuit and anti-distortion speaker
04/23/2014CN103747391A Sound box with dual-wireless mode and control method thereof
04/23/2014CN103743466A Microphone for measuring sound pressure value
04/23/2014CN102301741B Microphone component and method for operating a component of this type
04/23/2014CN101981942B Microphone unit, voice input device of close-talking type, information processing system
04/23/2014CN101911721B Method for synthesizing a microphone signal
04/23/2014CN101720558B Voice and position localization
04/22/2014US8705767 Electrostatic speaker system
04/22/2014US8705754 Measuring transducer displacement
04/17/2014WO2014057406A1 Method and apparatus for audio interference estimation
04/17/2014US20140105422 Method and an apparatus for processing an audio signal
04/17/2014US20140105418 Frequency domain multiband dynamics compressor with spectral balance compensation
04/17/2014US20140105417 Audio signal playback system and electronic device
04/17/2014US20140105416 Methods, apparatuses and computer program products for facilitating directional audio capture with multiple microphones
04/17/2014US20140105412 User designed active noise cancellation (anc) controller for headphones
04/17/2014US20140105411 Methods and systems for karaoke on a mobile device
04/17/2014US20140105409 Method and apparatus for audio processing
04/17/2014DE112012002438T5 Ultraschallsensorvorrichtung Ultrasonic sensor device
04/16/2014EP2720477A1 Virtual bass synthesis using harmonic transposition
04/16/2014EP2719195A1 Generating a masking signal on an electronic device
04/16/2014CN203554759U Decorative lighting with wireless audio
04/16/2014CN203554727U Led lighting device and wireless sound box system
04/16/2014CN203554677U System capable of adjusting volume based on frequencies and television employing same system
04/16/2014CN203554676U Wide-power-range electric car audio system
04/16/2014CN203554656U Wireless earphone
04/16/2014CN203554638U Practicing waist earphone sound box connected with smart device through LINK port
04/16/2014CN203554636U Multifunctional wireless sound box
04/16/2014CN1805617B Headphone and hands-free loudspeaker for mobile audio devices
04/16/2014CN103733642A Drive circuit
04/16/2014CN103731780A Digital hearing-aid signal processing method
04/16/2014CN103731779A Electronic shelf label system with loudspeaker and loudspeaker control method thereof
04/16/2014CN103731778A Audio input circuit used for GPS voice control system
04/16/2014CN103731777A Audio input circuit used for GPS navigation system
04/16/2014CN103731776A Audio circuit used for GPS voice control system
04/16/2014CN103731770A Self-talking self-listening headset
04/16/2014CN103731767A Wireless microphone system based on digital pilot frequency and working method thereof
04/16/2014CN102820036B Method and device for eliminating noises in self-adaption mode
04/16/2014CN102638746B Analog front-end circuit with low power consumption for medical equipment
04/16/2014CN102325288B De-noising device and method for audio circuit of mobile terminal earphone
04/15/2014US8699731 Apparatus and method for generating a low-frequency channel
04/15/2014US8699726 Apparatus and method for biasing a transducer
04/15/2014US8699721 Calibrating a dual omnidirectional microphone array (DOMA)
04/10/2014WO2014055819A2 Multimedia communication and display device
04/10/2014WO2014054784A1 Audio device and electronic apparatus employing same
04/10/2014WO2014054314A1 Audio signal processing device, method, and program
04/10/2014WO2014054264A1 Sound generator, vibrating member for sound generator, and sound generation system
04/10/2014WO2014053994A1 Electroacoustic speaker
04/10/2014WO2014019596A3 Processing audio signals
04/10/2014US20140098972 Array microphone device and gain control method
04/10/2014US20140098967 Output phase modulation entrainment containment for digital filters
04/10/2014US20140098966 Method for efficient sound field control of a compact loudspeaker array
04/10/2014US20140098206 Multimedia communication and display device
04/09/2014EP2717599A1 Method for processing an audio signal with modelling of the overall response of the electro-dynamic loudspeaker
04/09/2014EP2716066A1 Circuit assembly for processing an electrical signal of a microphone
04/09/2014EP2716065A1 Reducing a disturbance on a signal path of a semiconductor switch
04/09/2014EP2715725A2 Processing audio signals
04/09/2014CN203537555U Audio device
04/09/2014CN203537554U Simple earphone circuit for English teaching
04/09/2014CN203537553U An Interface circuit realizing serial port and infrared multiplex functions
04/09/2014CN203537331U Transconductance power amplifier with electron tubes and without negative feedback and output transformer
04/09/2014CN103718568A A method and system for improving voice communication experience in mobile communication devices
04/09/2014CN103716737A Volume adjusting circuit and method
04/09/2014CN103716736A Noise elimination device in audio interconnection device
04/09/2014CN103716735A Data during analog audio
04/09/2014CN103716734A Apparatus and method for detecting insertion of headset into mobile station
04/09/2014CN103716733A Vehicular audio processing unit
04/09/2014CN103716732A Loudspeaker system and detection method for the same
04/09/2014CN103716731A Volume control device and method
04/09/2014CN103716724A Sound collection method and electronic device
04/09/2014CN103713538A LED guiding sign controller
04/09/2014CN102301742B Method for determining inverse filter from critically banded impulse response data
04/09/2014CN102065350B Method, system and earphone for intelligently controlling multimedia playing
04/09/2014CN101978705B Acoustic passive radiating
04/09/2014CN101790121B Mobile equipment line control system, line control device and line control method
04/09/2014CN101656901B Noise-canceling system
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