| Patents for H04R 27 - Public address systems (2,454) |
|---|
| 09/13/2006 | CN1832496A Mobile communication terminal |
| 09/12/2006 | US7106868 Active noise control for vehicle door noise |
| 09/07/2006 | US20060198534 Air-droppable loudspeaker |
| 09/06/2006 | CN2814866Y Simple device for connecting vehicular audio with MP3 |
| 09/06/2006 | CN2814611Y Vehicular video-audio extending device and vehicular video-audio system using the same device |
| 09/05/2006 | US7103394 Motorcycle audio system control device and method |
| 08/31/2006 | WO2006091335A2 Methods and systems for intelligibility measurement of audio announcement systems |
| 08/30/2006 | EP1695593A1 Intelligibility testing for monitoring or public address systems |
| 08/30/2006 | CN2812467Y Amplifying mainframe with mega bass output |
| 08/29/2006 | US7099483 Sound control system, sound control device, electronic device, and method for controlling sound |
| 08/24/2006 | WO2006088380A1 A loudspeaker, a stacked sound source and a method for loading a speaker element |
| 08/23/2006 | CN1822711A Device and method for arranging a flat panel display |
| 08/23/2006 | CN1822710A Integrated audio video signal processing system using centralized processing of signals |
| 08/23/2006 | CN1271888C Digital sound mixing apparatus |
| 08/17/2006 | US20060182288 Addressable zone relay method and apparatus |
| 08/16/2006 | CN2807673Y Multimedia sound box and switching socket |
| 08/09/2006 | EP1687959A2 Automatic audio systems for fire detection and diagnosis, and crew and person locating during fires |
| 08/09/2006 | CN2805255Y Intercom also used for antiriot |
| 08/08/2006 | US7088830 Parametric ring emitter |
| 08/02/2006 | EP1686835A1 Conference system |
| 08/02/2006 | CN2802883Y Automatic selection radio megaphone device of infrared controll |
| 08/02/2006 | CN1812663A Loudspeaker enclosure element for forming vertical line array systems adjustable horizontal and vertical directivity |
| 07/27/2006 | US20060165245 Installation for controlling aids for public functions |
| 07/19/2006 | EP1680910A1 Device and method for processing an input signal |
| 07/19/2006 | EP1444215B1 1,2,4-thiadiazolium derivatives as melanocortin receptor modulators |
| 07/18/2006 | USRE39189 Reverberators for use in wide band assisted reverberation systems |
| 07/13/2006 | US20060153397 Audio distribution system |
| 07/05/2006 | EP1676380A1 Multiple channel wireless communication system |
| 07/05/2006 | CN1797943A Switch simulated power amplifier |
| 06/29/2006 | WO2006067486A1 Audio powerlinecommunication system using the ground line as transmission path |
| 06/27/2006 | US7068795 Public address system and method for an urban transit vehicle |
| 06/22/2006 | US20060133619 Spatial sound conference system and method |
| 06/21/2006 | CN2790084Y Stereophonic audio-frequency emitter |
| 06/15/2006 | US20060126862 Distributed audio system |
| 06/14/2006 | DE102004057500B3 Vorrichtung und Verfahren zur Ansteuerung einer Beschallungsanlage und Beschallungsanlage Apparatus and method for controlling a sound system and sound system |
| 06/13/2006 | US7062060 Outer mirror and interphone for a vehicle |
| 06/08/2006 | WO2006058602A1 Device and method for controlling a public address system, and a corresponding public address system |
| 06/07/2006 | CN1784926A Array speaker system |
| 06/07/2006 | CN1784900A Arrangement and method for audio source tracking |
| 06/07/2006 | CN1784085A Control method of mixing system and control apparatus of mixing system |
| 06/06/2006 | CA2292535C Method and apparatus for improving classroom amplification systems and other rf-type amplification systems |
| 05/31/2006 | EP1661435A2 Method and system for efficiently transmitting power when acoustically irradiating rooms |
| 05/30/2006 | US7054451 Sound reinforcement system having an echo suppressor and loudspeaker beamformer |
| 05/26/2006 | WO2006055783A1 Multiple amplifier synchronization system |
| 05/26/2006 | WO2006053704A1 Synchronizing multi-channel speakers over a network |
| 05/18/2006 | WO2006050754A2 Public address system |
| 05/17/2006 | EP1657954A1 Transmitter of wireless microphone, receiver for wireless microphone, mobile information communication apparatus, and communication system for wireless microphone |
| 05/17/2006 | CN2781716Y Audio controlled by built-in remote controller |
| 05/17/2006 | CN1774146A Portable radio loudspeaker |
| 05/10/2006 | EP1655993A1 Howling margin measuring device |
| 05/10/2006 | EP1655990A1 Wireless microphone communication system |
| 04/20/2006 | US20060083396 Hand-held wireless speaker |
| 04/20/2006 | US20060083393 Multiple channel wireless communication system |
| 04/13/2006 | WO2006038812A1 Desktop terminal foot and desktop system |
| 04/13/2006 | US20060078146 Desktop terminal foot and desktop system |
| 04/12/2006 | EP0746959B1 Digitally controlled analog cancellation system |
| 04/12/2006 | CN2772172Y Vehicualr acoustic unit capable of playing MP3 |
| 04/12/2006 | CN1759024A Audible warning for vehicle safety systems |
| 04/11/2006 | US7027981 System output control method and apparatus |
| 04/11/2006 | US7027604 Circuit to prevent acoustic feedback for a cellular speakerphone |
| 04/06/2006 | DE102004045942A1 Anschlussmodul für einen Schallwandler und Verfahren zum Betrieb einer Beschallungsanlage Connection module for a sound transducer and method for operating a sound system |
| 04/05/2006 | CN2770267Y Vehicular audio with MP3 player |
| 03/30/2006 | WO2006032645A1 Connector module for a sonic transducer and method for operation of a public address system |
| 03/29/2006 | CN2768362Y Multifunctional electric canister megaphone |
| 03/29/2006 | CN2768146Y Power amplifier and DVD N-ISDN |
| 03/28/2006 | US7019633 Audio signal sound diffusion system |
| 03/23/2006 | US20060062402 Public address system with adjustable directivity |
| 03/23/2006 | US20060062401 Smart speakers |
| 03/15/2006 | EP1634448A1 Video visitation station |
| 03/15/2006 | CN2765424Y Signal transmission device |
| 03/14/2006 | US7012630 Spatial sound conference system and apparatus |
| 03/09/2006 | US20060049889 Digital pulse-width-modulation generator |
| 03/08/2006 | EP1632104A2 System and method for delivering audio-visual content along a customer waiting line |
| 03/08/2006 | CN2764100Y Electric megaphone for safety protection in railway construction |
| 03/01/2006 | CN2762478Y Electric megaphone for teaching |
| 03/01/2006 | CN1741686A Voice collecting device and echo cancellation processing method |
| 02/28/2006 | US7006645 Audio reproduction apparatus |
| 02/23/2006 | US20060039570 Music broadcasting apparatus |
| 02/16/2006 | US20060032357 Calibrating a first and a second microphone |
| 02/16/2006 | DE112004000424T5 Akustische Warnung für Fahrzeugsicherheitssysteme Audible warning for vehicle safety systems |
| 02/15/2006 | EP1193999A4 Loudspeaker |
| 02/15/2006 | CN1734931A Wireless sound box |
| 02/15/2006 | CN1734858A Multifunctional USB data cable |
| 02/09/2006 | US20060030604 Novel 1,2,4-thiadiazolium derivatives as melanocortin receptor modulators |
| 02/02/2006 | US20060023871 System and method for stereo conferencing over low-bandwidth links |
| 02/01/2006 | EP1621017A1 An arrangement and method for audio source tracking |
| 01/26/2006 | US20060018489 Advanced digital vehicle microphone system and method having stop request chime capabilities |
| 01/25/2006 | CN2754305Y Fully-automatic wire less frequency modulated receiving-playback-audio amplifier |
| 01/19/2006 | US20060013208 Method and device for the synchronised restitution of data flows |
| 01/18/2006 | CN2753088Y Radio remote control megaphone |
| 01/18/2006 | CN1237724C Method and means for receiving and simultaneous reproduction of digital transmission signals |
| 01/17/2006 | US6987947 Multiple channel wireless communication system |
| 01/12/2006 | DE10351793B4 Adaptive Filtervorrichtung und Verfahren zum Verarbeiten eines akustischen Eingangssignals Adaptive filtering apparatus and method for processing an acoustic input signal |
| 01/05/2006 | DE202005016020U1 Loudspeaker box, has casing with walls that are made up of several layers of material with honeycomb-shaped structure and connected with cover layer made up of plywood, and plywood plates placed between material layers |
| 01/04/2006 | CN1716986A Stereo microphone processing for teleconferencing |
| 01/04/2006 | CN1714770A Hearing system |
| 12/29/2005 | WO2005125272A1 Howling suppression device, program, integrated circuit, and howling suppression method |
| 12/22/2005 | DE10340104B4 Verfahren und System zur effizienten Übertragung der Leistung bei der Beschallung von Räumen Method and system for efficient transfer of power at the sound in rooms |
| 12/20/2005 | US6978028 Process and device for focusing acoustic waves |
| 12/08/2005 | WO2005117485A1 Volume adjusting apparatus |