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)
03/2014
03/19/2014CN103648070A Contactless electronic horn MOS (Metal Oxide Semiconductor) tube-made anti-reverse-connection circuit and anti-reverse-connection method thereof
03/19/2014CN103648069A Intelligent vehicle-mounted environmental sound lead-in system
03/19/2014CN103648068A Earphone assembly and system
03/18/2014US8676361 Acoustical virtual reality engine and advanced techniques for enhancing delivered sound
03/18/2014US8675908 Low cost programmable sound recording and playback device and method for communicating with, and recharging of, the device
03/18/2014US8675896 Apparatus and method for audio signal processing in dual standby mobile communication terminal
03/18/2014US8675895 Microphone assembly with integrated self-test circuitry
03/18/2014US8675891 Power supply unit with noise reduction capability
03/18/2014US8675890 Speaker localization
03/18/2014US8675130 Electronic adapter unit for selectively modifying audio or video data for use with an output device
03/14/2014CA2826475A1 Multiple-orientation, free-standing, portable speaker
03/13/2014WO2014039258A1 Directional sound systems and related methods
03/13/2014WO2014037052A1 Method and devices for generating an audio signal
03/13/2014WO2014036918A1 Method and device for self-adaptive noise reduction
03/13/2014US20140072146 Optical microphone and method for detecting body conducted sound signals
03/13/2014US20140072133 Decisions on ambient noise suppression in a mobile communications handset device
03/13/2014DE102013207403B3 Verfahren zur Steuerung einer Adaptionsschrittweite und Hörvorrichtung Method for controlling a hearing apparatus and adaptation stepsize
03/12/2014EP2705672A1 Method for determining an impedance of an electroacoustic transducer and for operating an audio playback device
03/12/2014CN203482391U Wrist-worn device with hearing aid function
03/12/2014CN203482389U Piezoelectric loudspeaker driving device
03/12/2014CN203482383U Power supply timing sequence device installed in voice explanation device
03/12/2014CN203482382U Baby intelligent hypnosis sound box
03/12/2014CN203482381U Peripheral power supply circuit capable of synchronously transmitting same signal through left and right channel of headphone
03/12/2014CN203482364U Earphone, noise elimination system, earphone system and sound reproduction system
03/12/2014CN203482362U Portable microphone with button precise touching adjustment
03/12/2014CN203482357U Body-rotary-type tuning portable loudspeaker box
03/12/2014CN103636238A Speaker array apparatus
03/12/2014CN103636235A Equalization of speaker arrays
03/12/2014CN103636231A Pre-filtering for loudspeaker protection
03/12/2014CN103634726A Automatic loudspeaker equalization method
03/12/2014CN103634725A Method and device for controlling silence
03/12/2014CN103634724A Earphone connection interface and method of operating earphone, and terminal for supporting the same
03/12/2014CN103634723A Audio input circuit and electronic device with audio input
03/12/2014CN103634718A Earphone and line control device for same
03/12/2014CN103634717A Method, device and terminal equipment utilizing earphone to control
03/12/2014CN103633960A Method for controlling linear power electronic volume of audio frequency power amplifying circuit
03/12/2014CN103633950A Power amplifier control device and power amplifier control method of car-mounted multimedia device
03/12/2014CN102543093B Microphone device
03/12/2014CN102368164B Mode control circuit, semiconductor integrated circuit and audio processing circuit
03/12/2014CN102355615B Internal integration method for audio frequency deemphasis network
03/12/2014CN102132584B Ultrasonic transducer, electronic device, and ultrasonic endoscope
03/12/2014CN102131136B Adaptive ambient sound suppression and speech tracking method and system
03/12/2014CN102124758B Hearing aid, hearing assistance system, walking detection method, and hearing assistance method
03/11/2014US8670578 Piezoelectric actuator and electronic device
03/06/2014WO2014034866A1 Sound emitter, sound emission device, and electronic apparatus
03/06/2014WO2014034555A1 Audio signal playback device, method, program, and recording medium
03/06/2014WO2014034352A1 Voice coil speaker
03/06/2014WO2014034108A1 Medical apparatus and control method thereof
03/06/2014WO2014032681A1 Presentation of an audible message in a vehicle
03/06/2014US20140067384 Method and apparatus for canceling vocal signal from audio signal
03/06/2014US20140066134 Audio processing device, audio processing method, and recording medium recording audio processing program
03/06/2014US20140064524 Directional Sound Systems and Related Methods
03/06/2014US20140064522 Speaker
03/06/2014US20140064517 Multimedia processing system and audio signal processing method
03/06/2014US20140064514 Target sound enhancement device and car navigation system
03/06/2014US20140064513 System and method for remotely controlling audio equipment
03/06/2014US20140064511 Smart tool for headphones
03/06/2014US20140064502 Method for processing an audio signal with modeling of the overall response of the electrodynamic loudspeaker
03/06/2014US20140064500 Automatic Power Adjusting Headphones
03/06/2014DE102013011761A1 Motor vehicle has estimating unit and background noise spectrum unit that are designed to open dynamic filter with low background noise and close with strong background noise
03/05/2014EP2702751A1 Conference device
03/05/2014CN203466965U Wired earphone circuit with function of restraining 217 Hz noise interference
03/05/2014CN203466964U Terminal identification resistance range measurement device and system
03/05/2014CN203466963U Earphone conversion device
03/05/2014CN203466962U Audio port identification circuit and communication device
03/05/2014CN203466961U Audio circuit of music player installed on draw-bar box
03/05/2014CN103621109A Vibration actuator control method
03/05/2014CN103618983A A sound equipment control circuit and a control method thereof
03/05/2014CN103618982A Circuit and method for lowering far-end echoes, headset detecting circuit and method and headset
03/05/2014CN103618981A Double-channel audio system based on USB and work method thereof
03/05/2014CN103618347A Mobile power source with audio output function
03/05/2014CN102572643B Plosive eliminating circuit
03/05/2014CN102404670B Vehicle-mounted audio frequency circuit
03/05/2014CN102098608B Parametric acoustic array audio playback system and modulation method thereof
03/04/2014US8666095 Fast precision charge pump
03/04/2014US8666094 Drive control method of electrostatic-type ultrasonic transducer, electrostatic-type ultrasonic transducer, ultrasonic speaker using electrostatic-type ultrasonic transducer, audio signal reproducing method, superdirectional acoustic system, and display
03/04/2014US8666090 Microphone modeling system and method
03/04/2014US8666086 System and method for monitoring/controlling a sound masking system from an electronic floorplan
02/2014
02/28/2014CA2825434A1 Earphone connection interface, terminal including the same, and method of operating the terminal
02/27/2014WO2014031765A1 Apparatus and method for psychoacoustic balancing of sound to accommodate for asymmetrical hearing loss
02/27/2014WO2014030861A1 Acoustic conversion device capable of selecting speaker or receiver function
02/27/2014US20140056468 Magnetic circuit for loudspeaker and loudspeaker using the same
02/27/2014US20140056462 Electro-acoustic transducer
02/27/2014US20140056439 Electronic device and method for selecting microphone by detecting voice signal strength
02/27/2014US20140056437 Portable Fitness Monitoring Systems, and Applications Thereof
02/26/2014EP2701145A1 Noise estimation for use with noise reduction and echo cancellation in personal communication
02/26/2014EP2701143A1 Model selection of acoustic conditions for active noise control
02/26/2014CN203457312U Device for improving signal to noise ratio of microphone of server
02/26/2014CN203457311U Novel Bluetooth stereo
02/26/2014CN203457310U Vehicle-mounted sound equipment system with radio station voice recording function
02/26/2014CN203457309U Vehicle-mounted 3D surround sound digit power amplifier connecting device
02/26/2014CN203457213U A cell phone with a large-power horn
02/26/2014CN203455939U Wireless remote control LED (light-emitting diode) Bluetooth sound box, and remote control device and system
02/26/2014CN103609142A Isolator device for passing through a signal
02/26/2014CN103609139A Headphones, audio device, audio system and method for transmitting signals
02/26/2014CN103607826A Combined type flashlight
02/26/2014CN103607682A Energy-saving type digital microphone system
02/26/2014CN103607681A An audio frequency power amplifier starting charging circuit and a method
02/26/2014CN103607680A An audio frequency apparatus
02/26/2014CN103607679A HDMI interface-based sound equipment upgrading method and sound equipment
1 ... 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 ... 182