| Patents for H04R 3 - Circuits for transducers (18,190) |
|---|
| 01/24/2008 | DE102006032822A1 Tragbares mobiles Endgerät A portable mobile terminal |
| 01/23/2008 | EP1881738A2 Method of operating a hearing aid and assembly with a hearing aid |
| 01/23/2008 | EP1790187A4 Mobile wireless communications device with reduced microphone noise from radio frequency communications circuitry |
| 01/23/2008 | EP1584215A4 Loudspeaker system with extended output and field cancellation |
| 01/23/2008 | CN101111096A Combined sound frequency orienting ultrasound wave loud-speaker system |
| 01/23/2008 | CN101111095A Sound frequency directional loudspeaker system based on consumer electronic equipments |
| 01/23/2008 | CN101111094A Noise preventing module and its public address set |
| 01/22/2008 | US7321661 Current feedback system for improving crossover frequency response |
| 01/22/2008 | CA2436484C Vehicle accessory microphone |
| 01/17/2008 | WO2008007616A1 Non-audible murmur input alarm device, method, and program |
| 01/17/2008 | WO2007135678A3 Direct digital speaker apparatus having a desired directivity pattern |
| 01/17/2008 | WO2007025128A3 Method and apparatus for improving noise discrimination using attenuation factor |
| 01/17/2008 | US20080013761 Ultrasonic Transducer and Ultrasonic Speaker Using the Same |
| 01/17/2008 | US20080013758 Externally connected microphone module |
| 01/17/2008 | US20080013750 Sound signal processing apparatus and sound signal processing method |
| 01/17/2008 | US20080013749 Voice coder with two microphone system and strategic microphone placement to deter obstruction for a digital communication device |
| 01/17/2008 | US20080013748 Electronic device capable of switching between different operational modes via external microphone |
| 01/16/2008 | EP1879181A1 Method for compensation audio signal components in a vehicle communication system and system therefor |
| 01/16/2008 | EP1878302A2 Amplifier with double feedback control and associated speaker |
| 01/16/2008 | CN201008209Y Solar energy active loudspeaker box |
| 01/16/2008 | CN101105941A System for enhancing sound definition |
| 01/15/2008 | US7319772 Speaker device for improving mid/high-range frequencies |
| 01/15/2008 | US7319767 Line array electroacoustical transducing |
| 01/15/2008 | US7319641 Signal processing device for acoustic transducer array |
| 01/10/2008 | WO2008004541A1 Output correcting device and method, and loudspeaker output correcting device and method |
| 01/10/2008 | WO2008003583A1 Miniature electro-acoustic transducer with integrated coupling coil |
| 01/10/2008 | WO2008003260A1 Method and apparatus for connecting multiple multi-party calls |
| 01/10/2008 | WO2008003235A1 Bone sensing audio bi-directional transmitting and receiving device |
| 01/10/2008 | WO2008003207A1 A method and system for allocating loss based on the traffic level |
| 01/10/2008 | WO2005065012A3 A method for efficient beamforming using a complementary noise separation filter |
| 01/10/2008 | US20080008329 A method and system for adapting a loudspeaker to a listening position in a room |
| 01/09/2008 | EP1876706A1 Acoustic reproduction device |
| 01/09/2008 | EP1875771A1 Method and system for modifying an audio signal, and filter system for modifying an electrical signal |
| 01/09/2008 | CN201004706Y Intelligent transmitter with MP3 |
| 01/08/2008 | US7317804 Sound collecting device minimizing electrical noise |
| 01/08/2008 | US7317800 Apparatus and method for processing an audio signal to compensate for the frequency response of loudspeakers |
| 01/08/2008 | US7317389 Audio apparatus and monitoring method using the same |
| 01/08/2008 | US7317158 Reproduction controller, reproduction control method, program for the same, and recording medium with the program recorded therein |
| 01/08/2008 | US7316059 Method of manufacturing an ultrasonic probe |
| 01/08/2008 | CA2258618C Echo suppressor and non-linear processor of echo canceller |
| 01/03/2008 | WO2008002931A2 Methods and systems for producing a zone of reduced background noise |
| 01/03/2008 | WO2008002266A1 Device in a headset |
| 01/03/2008 | WO2008001857A1 Spatial audio signal reproducing device and spatial audio signal reproducing method |
| 01/03/2008 | WO2008001659A1 Sound generating/collecting device |
| 01/03/2008 | WO2008000092A1 System and method for a sound masking system for networked workstations or offices |
| 01/03/2008 | US20080002843 Ripple digital amplifier system |
| 01/03/2008 | US20080002841 Low-power high-PSRR current-mode microphone pre-amplifier system and method |
| 01/03/2008 | US20080002837 Variable directional condenser microphone unit |
| 01/03/2008 | US20080002836 System and method for a sound masking system for networked workstations or offices |
| 01/03/2008 | CA2653803A1 System and method for a sound masking system for networked workstations or offices |
| 01/02/2008 | EP1872620A1 Apparatus and method for controlling a plurality of loudspeakers by means of a graphic user interface |
| 01/02/2008 | CN201001191Y Control circuit for automatic mute main external power amplifier by earphone insertion |
| 01/02/2008 | CN201001101Y Universal interfere cancelling circuit |
| 01/02/2008 | CN200997984Y Multifunctional bag |
| 01/02/2008 | CN101099409A Sound receiver |
| 01/01/2008 | US7315625 Sound apparatus, method of changing sound characteristics, and data recording medium on which a sound correction program |
| 12/27/2007 | WO2007148509A1 Echo suppressor |
| 12/27/2007 | WO2007129003A8 Digital circuit arrangements for ambient noise-reduction |
| 12/27/2007 | WO2007100706A3 Portable media delivery system |
| 12/27/2007 | US20070300276 Broadcasting system and method of processing channel information in broadcasting system |
| 12/27/2007 | US20070297623 Apparatus and method to provide advanced microphone bias |
| 12/27/2007 | US20070297620 Methods and Systems for Producing a Zone of Reduced Background Noise |
| 12/27/2007 | DE202007007006U1 Universal Hör-/Sprechgarnitur/Universalheadset für Flugfunk, Profifunk, Amateurfunk, Jedermannfunk und Audiogeräte Universal headphone / headset / Universal Headset for aeronautical radio, professional radio, amateur radio, citizens' band radio and audio equipment |
| 12/27/2007 | DE102006029194A1 Adaptive filter step controlling device for use in e.g. hearing aid, has step determination unit attached to analyzing unit for controlling adaptive filter at adaptation step based on number of frequency bands |
| 12/26/2007 | EP1871143A1 Array speaker apparatus |
| 12/26/2007 | EP1871142A1 Audio reproducing device and vehicle using the audio reproducing device |
| 12/26/2007 | EP1869946A1 Headphones for connection to an external active noise compensation device |
| 12/26/2007 | EP1404026B1 Reproduction apparatus, output apparatus and method for controlling power consumption |
| 12/26/2007 | CN200997683Y Active loundspeaker box with automatic-switching function |
| 12/26/2007 | CN200997682Y Special loundspaker for increasing speech resolution in conference |
| 12/26/2007 | CN200997681Y Earplug amplifier |
| 12/26/2007 | CN200997680Y Multifunctional sound source processor for ear muffs |
| 12/26/2007 | CN200997672Y Intelligent microphne with memory rebroadcasting function |
| 12/26/2007 | CN200997585Y Bel-canto audio-frequency line of loundspeaker |
| 12/26/2007 | CN101094539A Device and method for adjusting level of sound signal for speaker |
| 12/26/2007 | CN100358393C Method and apparatus to direct sound |
| 12/25/2007 | US7313243 Sound pickup method and system with sound source tracking |
| 12/25/2007 | US7313241 Hearing aid device, and operating and adjustment methods therefor, with microphone disposed outside of the auditory canal |
| 12/21/2007 | WO2007144147A1 Signal separator, method for determining output signals on the basis of microphone signals, and computer program |
| 12/20/2007 | US20070291962 Automotive balanced microphone system and method of forming same |
| 12/20/2007 | US20070291961 Mobile terminal having speaker control and method of use |
| 12/20/2007 | DE102006049543A1 Lautsprecheranordnung zur gerichteten Beschallung eines Kraftfahrzeugsitzes Loudspeaker arrangement for direct sound of a motor vehicle seat |
| 12/19/2007 | EP1868415A1 Sound signal processing device and sound signal processing method |
| 12/19/2007 | EP1868411A1 Speaker system for portable electrical equipment |
| 12/19/2007 | CN200994190Y Multimedia device |
| 12/19/2007 | CN200994120Y Multi-circuit high fidelity front-rear stage integrated power amplifier |
| 12/19/2007 | CN200993884Y Automobile voice anti-interference device |
| 12/19/2007 | CN100356799C System and method for improving sound quality of multifunctional equipment of mobile communication terminal |
| 12/19/2007 | CN100356445C Method and apparatus for separating sound-source signal and method and device for detecting pitch |
| 12/13/2007 | WO2007111560A3 Filter adaptive frequency resolution |
| 12/13/2007 | US20070286433 Method for controlling output from ultrasonic speaker and ultrasonic speaker system |
| 12/13/2007 | US20070286430 Method and device for comparing signals to control transducers and transducer control system |
| 12/13/2007 | US20070286025 Method for directional location and locating system |
| 12/13/2007 | DE102006026803A1 Protective circuit for e.g. sensitive microphone preamplifier, has two zener diodes attached to input stage over other four zener diodes, capacitors arranged parallel to two diodes, and resistors arranged between four diodes and capacitors |
| 12/12/2007 | EP1865751A1 Surround system |
| 12/12/2007 | CN200990689Y Central controlling echo eliminating device |
| 12/12/2007 | CN200990688Y Microphone with echo-eliminating function |
| 12/12/2007 | CN200990687Y Earphone interface circuit |
| 12/06/2007 | WO2007140361A2 Automotive balanced microphone system and method of forming same |
| 12/06/2007 | WO2007139065A1 Audio playback system |