Patents for H04R 27 - Public address systems (2,454)
09/2008
09/16/2008US7426278 Sound device provided with a geometric and electronic radiation control
09/10/2008CN201114772Y Serial speaking device
09/10/2008CN201114771Y A miniature computer sound box
09/10/2008CN201114770Y A wall hung combination sound box
09/10/2008CN201114769Y Sound box with playing and power amplification effect
09/10/2008CN201114768Y Sound box with storage and power amplification effect
09/10/2008CN201114767Y Small-diameter and small power multi-unit sound recovery system
09/10/2008CN101262714A Acoustic signal processing system
09/09/2008US7424119 Voice matching system for audio transducers
09/09/2008US7424117 System and method for generating sound transitions in a surround environment
09/04/2008US20080212792 Microphone apparatus
09/03/2008CN101257739A Flower pot art sound unit
08/2008
08/27/2008EP1962547A1 Teleconference device
08/21/2008WO2008098618A1 A refractory mounting unit for ceiling mounted or wall mounted electric devices
08/21/2008US20080199022 Changing time intervals of the occurence of audio information from local and remote sites
08/19/2008US7415116 Method and system for improving communication in a vehicle
08/14/2008WO2008095342A1 A dock without a power source for digital devices
08/14/2008US20080192964 Speaker System and Speaker Cluster System
08/13/2008EP1800517B1 Device and method for controlling a public address system, and a corresponding public address system
07/2008
07/31/2008WO2008091367A2 Method and apparatus for creating a multi-dimensional communication space for use in a binaural audio system
07/31/2008US20080181427 Horn tone system
07/31/2008DE202008006896U1 Lautsprechersystem mit reduzierter rückseitiger Schallabstrahlung Speaker system with reduced back sound radiation
07/30/2008EP1950999A1 Speaker control via audio connection
07/24/2008WO2008087089A1 Sound amplification system
07/23/2008EP1815713B1 Synchronizing multi-channel speakers over a network
07/16/2008EP1944587A2 Sound collector, sound signal transmitter and music performance system for remote players
07/16/2008CN101223819A Device and method for controlling a plurality of loudspeakers by means of a DSP
07/16/2008CN101223817A Apparatus and method for controlling a plurality of speakers by means of a graphical user interface
07/16/2008CN101221878A Anode of electronic tube for sound equipment
07/03/2008US20080158001 Wired, wireless, infrared, and powerline audio entertainment systems
07/02/2008CN101212838A Sound box structure and mobile electronic device employing the sound box structure
07/01/2008US7394905 Voice amplifier for mask
06/2008
06/26/2008WO2008049061A3 System and method for regulating overlapping media messages
06/18/2008CN201073946Y Personalized controlled automobile trumpet
06/17/2008US7388962 Directional hearing enhancement systems
06/10/2008CA2249071C Wireless digital transmission system for speakers
06/05/2008US20080130924 Use of voice-to-remaining audio (vra) in consumer applications
06/04/2008CN101193463A Attached flat board speaking table
06/04/2008CN101193462A Sound amplifier system
05/2008
05/29/2008US20080123869 Broadcasting device having power frequency carrier
05/29/2008US20080123868 Wired, wireless, infrared, and powerline audio entertainment systems
05/21/2008EP1924120A2 Speaker volume
05/21/2008CN201063856Y Combined speaker
05/21/2008CN201063855Y Plate speaker
05/21/2008CN201063854Y Sound box capable of telescopic bending
05/21/2008CN201063853Y Sound box with extended structure
05/21/2008CN201063852Y Individual acoustics system
05/20/2008US7376476 Methods for changing time intervals of the occurrence of audio information from local and remote sites
05/14/2008EP1920587A1 Method and apparatus for multiparty collaboration enhancement
05/08/2008WO2008052697A1 Device and method for operating a motor vehicle
04/2008
04/30/2008CN201054791Y An audio device for voice amplification
04/30/2008CN201054742Y Combined sound box
04/23/2008EP1163824A4 Intelligent speaker training using microphone feedback and pre-loaded templates
04/23/2008CN201051756Y Signal transmission device
04/23/2008CN201051753Y A rear carrier clarion sound box
04/16/2008EP1912478A1 Classroom sound amplification system
04/16/2008CN101163355A Extendable loudspeaker device
04/10/2008US20080085011 Method and apparatus for selective exploitation of inherent and/or purposeful load impedance differences and associated virtual impedance
04/02/2008CN201044509Y Multi-acoustic channel multiple sound unit cabinet
04/02/2008CN100377922C Control module capable of being configured in acoustics used in vehicle
03/2008
03/26/2008CN201042079Y Portable stereo sound box
03/20/2008WO2007126705A3 Speakerphone with downfiring speaker and directional microphones
03/19/2008EP1901582A1 Audio device and audio beam control method
03/19/2008EP1900250A2 Electroacoustic method
03/19/2008CN201039460Y Integrated box electronic selling loud-speaker
03/19/2008CN101147192A Methods and systems for intelligibility measurement of audio announcement systems
03/18/2008US7346332 Wired, wireless, infrared, and powerline audio entertainment systems
03/18/2008CA2374837C Loudspeaker
03/11/2008US7343018 System of sound transducers with controllable directional properties
02/2008
02/26/2008US7337111 Use of voice-to-remaining audio (VRA) in consumer applications
02/20/2008CN201025733Y MP3 and MP4 active sound box
02/13/2008EP1782658B1 Device and method for controlling a plurality of loudspeakers by means of a dsp
02/06/2008CN201018667Y Ultra-thin type professional audio power amplifier
02/06/2008CN201018666Y USB stereo acoustics with network conference telephone function
02/06/2008CN201018636Y Single box type 2.1 tone channel sound box
02/06/2008CN201018500Y Bluetooth wireless microphone
01/2008
01/31/2008WO2007140178A3 System and method for announcement transmission
01/30/2008CN201015230Y Loudspeaking device
01/30/2008CN201014402Y Audio equipment with acoustic pressure fluorescence luminous colorful cartoon effect device
01/30/2008CN101115083A External connection type microphone module
01/24/2008US20080021706 Speech distribution system
01/16/2008EP1879423A2 In-the-ear loudspeaker system with wireless signal transmission
01/16/2008CN201008210Y Outdoor leisure acoustic device
01/15/2008US7319763 Power amplification for parametric loudspeakers
01/15/2008US7319107 1,2,4-thiadiazolium derivatives as melanocortin receptor modulators
01/09/2008CN201004733Y A novel vehicular sound box power amplifier output circuit board
01/02/2008EP1874094A1 Hybrid conference system
01/02/2008EP1872620A1 Apparatus and method for controlling a plurality of loudspeakers by means of a graphic user interface
01/02/2008CN201001196Y Dual-woofer bass speaker
01/02/2008CN201001195Y Multifunctional megaphone
01/02/2008CN201001183Y Decorating frame sound box
12/2007
12/27/2007US20070297459 Synchronizing Multi-Channel Speakers Over a Network
12/26/2007CN200997670Y Foldable loundspeaker box
12/26/2007CN101095371A Improved paging system
12/26/2007CN100358393C Method and apparatus to direct sound
12/21/2007WO2007145876A2 Communication system, apparatus and method
12/20/2007US20070291956 Communication system, apparatus and method
12/19/2007CN200994190Y Multimedia device
12/19/2007CN200994189Y Miniature foldable sound box
12/13/2007US20070287516 Directional wireless communication systems
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