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)
04/2012
04/07/2012CA2754575A1 Circuit, system and method for isolating a transducer from an amplifier in an electronic device
04/05/2012WO2012043596A1 Audio output device and audio output method
04/05/2012US20120082322 Sound scene manipulation
04/04/2012EP2437517A1 Sound scene manipulation
04/04/2012EP2437399A2 Ray tracing device and method
04/04/2012EP2436224A1 Communication system with personal information management and remote vehicle monitoring and control features
04/04/2012CN202183862U 电子小喇叭 Electronic trumpet
04/04/2012CN202183860U 带有切换功能的音响 Switching function with sound
04/04/2012CN102405651A 多用户无线音频系统 Multi-user wireless audio system
04/04/2012CN102404675A Drive control circuit for vibration speaker
04/04/2012CN102404673A 数字化扬声器系统通道均衡与声场控制方法和装置 Digital channel equalization and speaker system sound field control method and apparatus
04/04/2012CN102404672A Method and device for controlling channel equalization and beam of digital loudspeaker array system
04/04/2012CN102404671A Noise removing apparatus and noise removing method
04/04/2012CN102404670A Vehicle-mounted audio frequency circuit
04/04/2012CN102404669A 音频频率检测电路以及音频频率检测方法 Audio frequency detection circuit, and an audio frequency detection method
04/04/2012CN102404668A Signal processing apparatus and method
04/04/2012CN102404667A Apparatus and method for merging acoustic object information
04/04/2012CN102404666A 音频连接器检测和配置 Detect and configure the audio connector
04/04/2012CN102404665A Earphone interface self-adaptation circuit
04/04/2012CN102404664A 定向扬声器 Directional speakers
04/04/2012CN102402978A 乐音装置 Musical device
04/03/2012US8150073 Impedance converting circuit and electronic device
04/03/2012US8150072 Vibration generator for electronic device having speaker driver and counterweight
04/03/2012US8150063 Stabilizing directional audio input from a moving microphone array
04/03/2012US8150062 Determination of the adequate measurement window for sound source localization in echoic environments
04/03/2012US8150061 Sound generating method, sound generating apparatus, sound reproducing method, and sound reproducing apparatus
04/03/2012US8150054 Adaptive filter in a sensor array system
04/03/2012US8150047 Automatic audio system equalizing
04/03/2012CA2444166C Method and apparatus for remote control of an audio source such as a wireless microphone system
03/2012
03/29/2012US20120076339 Microphone component and method for operating same
03/29/2012US20120076325 Phantom Power Circuit
03/28/2012EP2434643A2 Speaker
03/28/2012EP2433432A1 Acoustic device
03/28/2012EP2238592B1 Method for reducing noise in an input signal of a hearing device as well as a hearing device
03/28/2012EP1468550B1 Digital linking of multiple microphone systems
03/28/2012CN102395084A Headset circuit
03/28/2012CN102395083A Indoor sound system
03/28/2012CN102395082A Miniature sound equipment with input output dual-purpose socket
03/28/2012CN102395081A Sound numerical control system
03/28/2012CN102395080A Portable electronic device and voice playing method and device thereof
03/28/2012CN102395079A Load control vehicle-mounted sound
03/28/2012CN102395077A Anti-interference earphone
03/28/2012CN102395069A Method for being compatible with earphones with different plug types, apparatus and terminal equipment
03/28/2012CN102395064A Miniature frequency-modulation wireless microphone with one battery
03/28/2012CN102394059A Musical tone apparatus
03/27/2012US8144886 Audio conferencing apparatus
03/27/2012US8144883 Method and system for adapting a loudspeaker to a listening position in a room
03/27/2012US8144380 Drive mechanism
03/27/2012CA2473343C Multichannel downmixing device
03/22/2012WO2012037373A1 Non-contact cymbal pickup using multiple microphones
03/22/2012WO2012035675A1 Audio recording device
03/22/2012WO2012034538A1 Terminal and method for outputting audio signals
03/22/2012WO2012008923A8 A method and apparatus for stereo enhancement of an audio system
03/22/2012WO2011116723A3 Control method and device for audio output
03/22/2012US20120070020 Speaker device, audio control device, wall attached with speaker device
03/22/2012US20120070019 Methods for addressing equipment in tree networks
03/22/2012US20120070018 Reduced microphone handling noise
03/22/2012US20120070015 Apparatus and method for enhancing audio quality using non-uniform configuration of microphones
03/22/2012DE102011112859A1 Audio and video input switching apparatus has control circuit which is configured to receive signals and indication of requested switch state to provide control signal to switch and compares two signals satisfies threshold
03/21/2012EP2432249A1 Microphone
03/21/2012CN202172485U 音频装置 Audio device
03/21/2012CN1983806B Signal processing apparatus and signal processing method
03/21/2012CN102388625A Electroacoustic device, in particular for a concert hall
03/21/2012CN102388624A Sound processing device and sound processing method
03/21/2012CN102387447A Method for outputting audio of handheld device
03/21/2012CN102386917A Analogue digital conversion method, analogue digital conversion device and digital microphone
03/20/2012US8139793 Methods and apparatus for capturing audio signals based on a visual image
03/20/2012US8139790 Integrated circuit biasing a microphone
03/20/2012US8139784 Compound loudspeaker
03/20/2012US8139783 Speaker assembly arrangement for a vehicle and method of mounting a speaker
03/20/2012US8139446 Audio system
03/20/2012CA2525609C Speaker unit for a communication system
03/20/2012CA2512670C Digital television transmitter and receiver for transmitting and receiving dual stream using 4 level vestigial side band robust data
03/15/2012WO2012033165A1 Sound masking device and sound masking method
03/15/2012WO2012032845A1 Audio signal transform device, method, program, and recording medium
03/15/2012WO2012032704A1 Sound reproduction device
03/15/2012WO2012031481A1 Adaptive circuit of earphone interface
03/15/2012US20120063613 Recording apparatus, recording condition setting method, and non-transitory computer-readable recording medium encoded with recording condition setting program
03/15/2012DE102010044917A1 Method for prevention of acoustic feedbacks between signal input and signal output in automobile, involves compensating variable offset of the phase between sound receiving transducer and reproducing transducer to prevent acoustic feedback
03/15/2012DE102010040689A1 Audio system for use in motor car, has processor device coupled with audio sources and audio compressor, which compresses audio signal based on audio source change from one source to another source based on audio compressor threshold value
03/14/2012EP2429215A2 Speaker device
03/14/2012EP2429214A2 Method for acoustic signal tracking
03/14/2012CN202168199U 太阳能光伏发电系统向音响用集成电路供电的电路装置 Solar photovoltaic system integrated circuit device to the stereo powered by
03/14/2012CN202168198U Sound control circuit
03/14/2012CN202168197U 一种降噪节能电磁控制装置 An energy-saving electromagnetic noise control device
03/14/2012CN102378089A Speaker and electronic device
03/14/2012CN102378087A Audio jack reset
03/14/2012CN102378086A Electronic device and method for controlling audio output module in accordance with rotation angle
03/14/2012CN102378085A Equal-loudness contour-based loudness compensation method and device, and audio processing system
03/14/2012CN102378084A Electronic device
03/14/2012CN102378076A Electronic device and method for providing sound-surround ambience
03/14/2012CN102377088A Audio signal receiving and transferring device
03/13/2012US8135144 Microphone system, sound input apparatus and method for manufacturing the same
03/13/2012US8135143 Remote conference apparatus and sound emitting/collecting apparatus
03/13/2012US8135142 Method for reducing interferences of a directional microphone
03/08/2012WO2012031091A2 Buffering apparatus and method
03/08/2012WO2012009670A3 Audio driver system and method
03/08/2012US20120057724 Automatic audio system equalizing
03/08/2012US20120057713 Automatic audio system equalizing
03/07/2012EP2426951A1 Hearing aid device and hearing aid method
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