H04R 27 - Public address systems

Patents for H04R 27 - Public address systems (2,454)
12/2007
12/13/2007	US20070286430 Method and device for comparing signals to control transducers and transducer control system
12/12/2007	CN200989577Y Audio table lamp
11/2007
11/28/2007	EP1860911A1 System and method for improving communication in a room
11/28/2007	CN200983659Y A room embedded wall sound box
11/28/2007	CN101079602A Automatic input-gain control circuit and method thereof
11/21/2007	CN200979800Y A DVD player with the control of video and audio system
11/15/2007	WO2007107744A3 Lighting and sound reproduction
11/14/2007	EP1855506A2 Method and apparatus to direct sound using an array of output transducers
11/14/2007	EP1854094A2 Methods and systems for intelligibility measurement of audio announcement systems
11/14/2007	EP1762120B1 Audio conferencing device, audio conferencing system and method for carrying out an audio conference
11/14/2007	CN200976678Y Portable loudspeaker box
11/14/2007	CN200976677Y Combined sound equipment
11/14/2007	CN101072266A Loudspeaker voice signal modulating device and method
11/07/2007	EP1851656A2 System and method for formatting multimode sound content and metadata
11/07/2007	CN200973176Y Multimedia mini-combined loudspeaker box
11/07/2007	CN200973175Y Digital loudspeaker box
11/07/2007	CN200973171Y Flat TV. loudspeaker
10/2007
10/31/2007	EP1850640A1 Vehicle communication system
10/31/2007	EP1559225B1 Mechanism and method for audio system synchronization
10/31/2007	CN200969682Y Outdoor acoustic device as subbase and electric frying and roasting equipment with acoustic device
10/31/2007	CN200969681Y Multimedia sound with network camera
10/31/2007	CN200969672Y Multichannel loudspeaker box having heavy bass
10/31/2007	CN200969665Y Integrated loudspeaker box
10/31/2007	CN200969613Y Passive handset megaphone
10/30/2007	US7290032 Broadcast communication system and method thereof in a point-to-multiport communication system
10/24/2007	EP1848246A2 Radio transmitting device and control device for event-halls and corresponding method
10/24/2007	CN200966159Y Active sound box built-in with DVD player
10/24/2007	CN200966158Y Variable sound box
10/24/2007	CN200966157Y A sound box with cosmetics box
10/17/2007	EP1076928A4 User adjustable volume control that accommodates hearing
10/10/2007	CN200959677Y Vehicle micro-loundspeaker device
10/10/2007	CN101051517A Lound speaker capable of front and back remote control regulation
10/03/2007	CN200956659Y Horn loud speaker structure for reinforcing sound effect
10/03/2007	CN101047408A Digital radio microphone system
09/2007
09/27/2007	WO2007107744A2 Lighting and sound reproduction
09/20/2007	US20070217616 Guiding device and method of controlling the same
09/19/2007	EP1834505A2 An improved paging system
09/19/2007	CN200950661Y Built-up sound equipment
09/11/2007	US7269452 Directional wireless communication systems
09/11/2007	US7266927 Drive-in movie theater with short range sound system
09/05/2007	CN200944666Y Extendable loudspeaker device
08/2007
08/29/2007	CN200941303Y Portable acoustics digital laser video disk player
08/29/2007	CN100334869C Portable telephone attachment for person hard of hearing
08/22/2007	EP1821572A1 Sound system
08/22/2007	CN2938578Y Frequency-modulation radio broadcast receiver-amplifier of controlling amplifying switch by dummy audio signal
08/16/2007	WO2007091889A1 System for giving intelligibility feedback to a speaker
08/16/2007	WO2006091335A3 Methods and systems for intelligibility measurement of audio announcement systems
08/15/2007	EP1818912A1 System for giving intelligibility feedback to a speaker
08/15/2007	CN2935377Y Audio-visual equipment for hiding display
08/09/2007	US20070180913 Resonance frequency determining method, resonance frequency selecting method, and resonance frequency determining apparatus
08/08/2007	EP1815713A1 Synchronizing multi-channel speakers over a network
08/08/2007	EP1559257B1 Method and device for the synchronised restitution of data flows
08/08/2007	CN1331110C Digita mixer
08/02/2007	US20070177751 Integrated electro acoustic equipment with portable compact construction for sound applications
08/01/2007	EP1813133A2 Public address system
08/01/2007	CN2930178Y Infrared remote control radio speaker
08/01/2007	CN2930177Y Integrated micro active stereo speaker
07/2007
07/25/2007	CN2927626Y Portable DVD player with liquid-crystal TV-set
07/25/2007	CN2927582Y Vibrating loundspeaker
07/25/2007	CN2927581Y Portable loundspeaker bag fitted with ipod player
07/25/2007	CN2927577Y 3.1 audio-track loundspeaker system
07/25/2007	CN101005714A Decoration frame speaker
07/19/2007	WO2007080730A1 Advertising and informing device, method, and program, and recording medium
07/19/2007	US20070165893 Howling margin measuring device
07/19/2007	US20070165876 Sound device provided with a geometric and electronic radiation control
07/19/2007	US20070165871 Audio system having reverberation reducing filter
07/19/2007	DE102006001730A1 Beschallungsanlage, Verfahren zur Verbesserung der Sprachqualität und/oder Verständlichkeit von Sprachdurchsagen sowie Computerprogramm PA System, method for improving the speech quality and / or intelligibility of voice announcements and computer program
07/18/2007	EP1808853A1 Public address system, method and computer program to enhance the speech intelligibility of spoken messages
07/12/2007	US20070160224 Wireless digital transmission system for loudspeakers
07/04/2007	EP1266469A4 Use of voice-to-remaining audio (vra) in consumer applications
06/2007
06/28/2007	US20070150284 Automated Sound System Designing
06/28/2007	DE102005022869B4 Befestigungsvorrichtung zum Aufbau einer Anordnung aus Lautsprecherboxen sowie Verfahren zum Aufbau der Anordnung Fastening device for constructing an array of speakers and methods of construction of the arrangement
06/27/2007	EP1802175A1 Sound device and ship comprising the device
06/27/2007	EP1800517A1 Device and method for controlling a public address system, and a corresponding public address system
06/27/2007	CN2917149Y Automobile sound device
06/27/2007	CN2917111Y Sound amplification communication device
06/27/2007	CN1989783A Speaker system, and speaker cluster system
06/26/2007	US7236599 Generating separate analog audio programs from a digital link
06/20/2007	CN2914551Y Signal transmission apparatus
06/20/2007	CN2914548Y Household background music displaying system
06/20/2007	CN2914547Y Portable sound equipment
06/19/2007	US7233769 Multiple channel wireless communication system
06/14/2007	US20070133816 Sound masking system
06/13/2007	CN2912180Y Multifunction video/audio playing loudspeaker box
06/13/2007	CN2912179Y Acoustics of media player
06/13/2007	CN2912178Y Loudspeaker box
06/13/2007	CN2912173Y Loudspeakers of media player
06/13/2007	CN2911955Y Sound controlled plasma discharging lamps
06/13/2007	CN1980490A Audio-frequency signal processing module
06/07/2007	US20070127732 Distributed stereo system
06/06/2007	CN1976544A Capacitive load driving circuit, electrostatic transducer, ultrasonic speaker
06/05/2007	US7227959 Multi-channel digital feedback reducer system
05/2007
05/30/2007	CN2907153Y Multimedia sound system with USB interface
05/30/2007	CN2904838Y Pillow provided with stereophony
05/30/2007	CN1972530A Electrostatic transducer, ultrasonic speaker, driving circuit of capacitive load
05/29/2007	CA2475183C A method to reduce acoustic coupling in audio conferencing systems
05/24/2007	US20070113727 Wireless microphone communication system
05/23/2007	CN2904519Y Multifunctional blue tooth loudspeaker box
05/23/2007	CN1968546A Electrostatic transducer, driving circuit of capacitive load, method for setting circuit constant
05/16/2007	CN2901760Y Automobile acoustic device

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