H04R 3 - Circuits for transducers

Patents for H04R 3 - Circuits for transducers (18,190)
10/2009
10/08/2009	WO2009122239A1 Volume level modification
10/08/2009	US20090251337 Grouping Variable Media Inputs To Reflect A User Session
10/08/2009	US20090251336 Quick Record Function In A Smart Pen Computing System
10/08/2009	US20090251208 Low power slicer-based demodulator for ppm
10/08/2009	DE10360272B4 Lautsprecher Speaker
10/08/2009	DE102008013586A1 Vorrichtung und Verfahren zur Ausgabe von akustischen Signalen Apparatus and method for output of acoustic signals
10/07/2009	EP2106673A2 Ambient noise reduction
10/07/2009	CN201323726Y Vehicle-mounted audio device with wireless electric megaphone
10/07/2009	CN201323647Y Audio player protector
10/07/2009	CN201322999Y Lecture listening machine helping students conduct whole-brain study
10/07/2009	CN201321377Y Micro electro mechanical system microphone package with PCB provided with sound holes
10/07/2009	CN101554064A Bluetooth microphone array
10/07/2009	CN101552939A In-vehicle sound quality self-adapting active control system and method
10/07/2009	CN101552849A Echo canceler circuit and method
10/07/2009	CN101552828A Mobile phone with embedded wired headset
10/07/2009	CN100547947C Detecting control circuit for two-wire multiple signal transmission speaker in public broadcast system
10/06/2009	US7599836 Voice recording system, recording device, voice analysis device, voice recording method and program
10/06/2009	US7599705 Wireless transmitter and hearing system
10/06/2009	US7599505 Condenser microphone
10/06/2009	US7599503 Audio output level setting method and device
10/06/2009	US7599502 Sound control installation
10/06/2009	CA2379888C Electric signal processing for electroacoustic transducer
10/06/2009	CA2360970C A wireless microphone having a split-band audio frequency companding system that provides improved noise reduction and sound quality
10/06/2009	CA2277699C Sound control circuit for smart digital audio-video reproduction system
10/01/2009	WO2009120467A1 Acoustic passive radiating
10/01/2009	WO2009119989A2 Vibration apparatus for bone conduction
10/01/2009	WO2009119852A1 Microphone unit, voice input device of close-talking type, information processing system, and method for manufacturing microphone unit
10/01/2009	WO2009119844A1 Speech processing device
10/01/2009	US20090245542 Automated recording facility
10/01/2009	US20090245539 User adjustable volume control that accommodates hearing
10/01/2009	US20090245531 Ear cover
10/01/2009	DE20122910U1 Verbindungskabel für Helme Connection cable for helmets
09/2009
09/30/2009	EP2106163A2 Apparatus and method for dynamic detection and attenuation of periodic acoustic feedback
09/30/2009	CN201319664Y DC servo circuit with indication function
09/30/2009	CN201319663Y Anti-interference audio circuit used for mine underground
09/30/2009	CN101547391A Short-distance multidirectional ultrasonic environment reconstruction system
09/30/2009	CN101547389A Headphone device, signal processing device, and signal processing method
09/30/2009	CN101547387A Earphone and audio display system using same
09/30/2009	CN101547000A A signal conversion circuit, digit-analog conversion device and audio frequency output equipment
09/30/2009	CN101546470A Bluetooth remote control device of vehicle audio and remote control method
09/30/2009	CN101543365A Backrest cushion being able to generate sound
09/30/2009	CN100546408C Electroacoustic transducer with built in transducer circuit
09/29/2009	US7596238 Howling margin measuring device
09/29/2009	US7596230 Method for detection of ultrasound in a listening device with two or more microphones, and listening device with two or more microphones
09/29/2009	US7596229 Parametric audio system for operation in a saturated air medium
09/27/2009	CA2627824A1 Automatic ipod volume adjustment
09/24/2009	WO2009117474A2 Systems and methods for detecting wind noise using multiple audio sources
09/24/2009	WO2009117471A1 Speech enhancement using multiple microphones on multiple devices
09/24/2009	WO2009117450A1 Enhanced immersive soundscapes production
09/24/2009	WO2009116521A1 Howling suppressing device and method for controlling same
09/24/2009	WO2009116256A1 Microphone device
09/24/2009	US20090238378 Enhanced Immersive Soundscapes Production
09/24/2009	US20090238377 Speech enhancement using multiple microphones on multiple devices
09/24/2009	US20090238372 Vertically or horizontally placeable combinative array speaker
09/24/2009	CA2705789A1 Speech enhancement using multiple microphones on multiple devices
09/23/2009	EP2104374A1 Spatially robust audio precompensation
09/23/2009	EP2104373A1 Condenser microphone
09/23/2009	CN101543092A Kick gate
09/23/2009	CN101543091A Voice input device, its manufacturing method and information processing system
09/23/2009	CN101543090A Integrated circuit device, voice input device and information processing system
09/23/2009	CN101543089A Voice input device, its manufacturing method and information processing system
09/23/2009	CN101540943A Micro speaker system integrating filter circuit and power adjusting circuit
09/23/2009	CN101540942A Micro sound system
09/23/2009	CN100544501C Electret capacitor microphone
09/23/2009	CN100544499C Improved analogue selector
09/23/2009	CN100544223C Device and method for carrying out multichannel acoustic echo compensation with a variable number of channels
09/17/2009	WO2009113192A1 Signal separating apparatus and signal separating method
09/17/2009	WO2009113016A1 Generation of a drive signal for a sound transducer
09/17/2009	US20090232468 Multimedia device generating media file with geographic information and method of playing media file with geographic information
09/17/2009	US20090232298 Microphone coupler system for a communication device
09/17/2009	DE102008012856A1 Akustische Anregereinheit Acoustic excitation purity
09/16/2009	EP2101514A1 Voice input device, its manufacturing method and information processing system
09/16/2009	EP2101513A1 Voice input device, its manufacturing method and information processing system
09/16/2009	EP2101511A2 Digital microphone
09/16/2009	CN101536540A Signal processing system and method
09/16/2009	CN101534467A Condenser microphone
09/16/2009	CN101534463A A noise elimination device
09/16/2009	CN101533641A Method for correcting channel delay parameters of multichannel signals and device
09/16/2009	CN101533090A Method and device for positioning sound of array microphone
09/16/2009	CN100542337C Sound field reproduction apparatus and sound field space reproduction system
09/15/2009	US7590253 Hearing aid having switchable first and second order directional responses
09/11/2009	WO2009110578A1 Dereverberation apparatus, dereverberation method, dereverberation program, and recording medium
09/11/2009	WO2009110576A1 Sound collecting device
09/11/2009	WO2009110087A1 Signal processing device
09/11/2009	WO2009109217A1 Apparatus for capturing and rendering a plurality of audio channels
09/10/2009	US20090228272 System for distinguishing desired audio signals from noise
09/10/2009	US20090226005 Spatial noise suppression for a microphone array
09/10/2009	US20090226004 Microphone aperture
09/10/2009	US20090225980 Gain and spectral shape adjustment in audio signal processing
09/09/2009	CN201307924Y Earphone detecting circuit and terminal device using earphone detecting device
09/09/2009	CN101529926A System and method for compensating memoryless non-linear distortion of an audio transducer
09/09/2009	CN101527874A Dynamic sound field system
09/09/2009	CN101527801A Circuit for mixture output of TV receiver and speaker
09/09/2009	CN100539738C Loudspeaker device
09/09/2009	CN100539737C Method and apparatus to create a sound field
09/08/2009	US7587058 Method and device for matching the phases of microphone signals of a directional microphone of a hearing aid
09/08/2009	US7587056 Small array microphone apparatus and noise suppression methods thereof
09/08/2009	US7587055 Sound collection system
09/08/2009	US7587054 Audio system based on at least second-order eigenbeams
09/08/2009	CA2394429C Robust talker localization in reverberant environment

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