Patents
Sitemap › H04 - Electric communication technique › H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; Deaf-aid sets; Public address systems › H04R 1 - Details of transducers
Patents for H04R 1 - Details of transducers (42,173)
10/2000
10/11/2000CN1269755A Trim panel comprising integral acoustic system
10/10/2000US6130954 High back-emf, high pressure subwoofer having small volume cabinet, low frequency cutoff and pressure resistant surround
10/10/2000US6130953 Headset
10/10/2000US6130952 Microphone
10/05/2000WO2000059264A2 Optical microphone apparatus
10/05/2000WO2000059263A1 Apparatus having an electroacoustic transducer mounted on a p.c. board with the aid of a holding means
10/05/2000WO2000059262A2 Cap and center pole apparatus and method of coupling
10/05/2000WO2000057791A1 Ultrasonic imaging using pulse compression
10/04/2000EP1041538A1 Mechanical filter for acoustic systems and television set equipped with sunch filters
10/04/2000EP0681688B1 Ultrasonic pest control device and method for constructing the same
10/04/2000CN2399893Y Circular full frequency loudspeaker
10/04/2000CN1269119A Down-fill speaker for large scale sound reproduction system
10/04/2000CN1057187C Cross complementary voice box with low frequency low limit and small distortion
10/03/2000US6128395 Loudspeaker system with controlled directional sensitivity
10/03/2000US6128394 Speaker apparatus and waterproof cover therefor
10/03/2000US6128393 Microphone with shock-resistant means
10/03/2000US6128374 Method and apparatus for transmitting coded audio signals through a transmission channel with limited bandwidth
10/03/2000US6125964 Electric horn structure with the trumpet body and the resonator in one piece
10/03/2000CA2188794C Headset for electronic stethoscope
10/03/2000CA2012487C Wireless headphone
09/2000
09/28/2000DE19960444A1 Living room lamp with built-in tweeter and mid-range loudspeaker arrangement
09/28/2000DE19908631A1 Loudspeaker arrangement e.g. for multipath loudspeaker system, has housing which has sphere and contains all components except subwoofer
09/28/2000DE10008501A1 Audio frequency crossover network for improving sound reproduction, combines high and low pass filters in arrangement capable of passive, active or digital implementation
09/27/2000EP1039777A2 Small microphone
09/27/2000EP1039748A2 Television receiver
09/27/2000EP0844838B1 A mounting foot device for hi-fi equipment
09/27/2000CN2398792Y Composite loudspeaker box
09/27/2000CN1268016A Electroacoustical converter
09/27/2000CN1268014A Flexible ear tack
09/26/2000US6125189 Electroacoustic transducer of digital type
09/21/2000WO2000056131A1 Loudspeaker with differentiated energy distribution in vertical and horizontal planes
09/21/2000WO2000056118A1 Adjustable brace, e.g., ear-brace
09/21/2000WO2000056117A1 Geophone with mounted connectors
09/21/2000WO2000055824A1 A vibrator and a method of controlling a vibrator
09/21/2000WO2000055676A1 Compact image display system for eyeglasses or other head-borne frames
09/21/2000WO2000055673A1 Headset boom for image display module
09/21/2000WO2000022876A9 Point source speaker system
09/21/2000DE19963977A1 Arrangement for mounting speaker on display, comprises vibration attenuator on inside surface of cabinet coupled to speaker by holding projections
09/21/2000DE19852803C1 Bass reflex loudspeaker has bass tone horn with its mouth orthogonal to membrane of horn driver and its neck extended in horn driver direction
09/20/2000EP1036485A1 Device having two coaxially disposed bodies which are movable relative to one another along a translation axis
09/20/2000EP1036484A1 Resonant mode panel-loudspeakers
09/20/2000CN2397690Y Forking microphone for interview
09/20/2000CN1267179A Device for mounting loudspeaker to display device
09/19/2000US6122390 Speaker hatchboard
09/19/2000US6122389 Flush mounted directional microphone
09/19/2000US6121881 Protective mask communication devices and systems for use in hazardous environments
09/14/2000WO2000054554A1 Audio/video system and method enabling a user to select different views and sounds associated with an event
09/14/2000WO2000054553A1 Method for shaping the spatial reception amplification characteristic of a converter arrangement and converter arrangement
09/14/2000WO2000054552A1 Resonant-mode panel loudspeaker with light emitter
09/14/2000WO2000054551A2 Apparatus including an electroacoustic transducer having terminal contacts which extend in the direction of the transducer axis and including a printed circuit board having mating contacts
09/14/2000WO2000054548A2 Electronic apparatus incorporating a loudspeaker comprising a bending wave panel member
09/14/2000WO2000054422A1 Apparatus for taking a portable terminal
09/14/2000WO2000036875A3 Loudspeaker
09/14/2000CA2636037A1 Video/audio system and method enabling a user to select different views and sounds associated with an event
09/14/2000CA2366992A1 Method for shaping the spatial reception amplification characteristic of a converter arrangement and converter arrangement
09/14/2000CA2365308A1 Electronic apparatus
09/13/2000EP1035752A1 Method for shaping the spatial reception amplification characteristic of a converter arrangement and converter arrangement
09/13/2000CN1266604A Sound radiating devices
09/12/2000US6118883 System for controlling low frequency acoustical directivity patterns and minimizing directivity discontinuities during frequency transitions
09/12/2000US6116373 Acoustic horns for loudspeakers
09/12/2000CA2212139C Earmolds for use in two-way communications devices
09/08/2000WO2000052978A1 Bandpass loudspeaker system
09/08/2000WO2000052958A1 Speaker system
09/08/2000WO2000038475A3 A communication device
09/06/2000EP1033452A1 Device with variable acoustic properties
09/06/2000EP1033061A1 An improved low frequency transducer enclosure
09/06/2000CN2395486Y Circuit for small active heavy bass loud speaker box
09/06/2000CN2395485Y 可调式耳机 Adjustable Headset
09/05/2000US6115477 Denta-mandibular sound-transmitting system
09/05/2000US6113963 Treatment of meat products
09/05/2000US6113546 Off-aperture electrical connection for ultrasonic transducer
09/05/2000US6112847 Loudspeaker with differentiated energy distribution in vertical and horizontal planes
08/2000
08/31/2000WO2000035242A3 Bending wave panel-form loudspeaker
08/31/2000DE19954483A1 Loudspeaker cushion has at least three loudspeakers attached to curved half-shell made of deformable, cushioning material and protected by foam cushion, second narrow foam cushion
08/31/2000DE19813218C1 High medium tone loudspeaker for rock group, orchestra, theatre or commercial center, has separate air chambers for medium tone electroacoustic transducers with overlapping ranges and high tone electroacoustic transducer
08/30/2000EP1032243A2 A stereophonic earphone apparatus
08/30/2000EP1031229A1 Method for transmitting acoustic signals from a memory or chip card, and card for implementing said method
08/30/2000CN2394394Y Super-thin speaker frame
08/30/2000CN2394393Y Adjustable earphone frame
08/29/2000US6111964 Microphone device navigation system, communication device, audio device, and motor vehicle
08/29/2000US6111820 Semi-rigid low-noise interlink for spatially extended hydrophones
08/25/2000CA2297423A1 Stereophonic earphone apparatus
08/24/2000WO2000049836A1 Directional microphone assembly
08/24/2000WO2000049789A1 Handset for telephone technology
08/24/2000WO2000049788A1 Telephone handset
08/24/2000DE19850298C1 Mikrofon Microphone
08/23/2000EP1029282A2 Interactive devices and methods
08/23/2000CN2393286Y Honeycomb type resonant cavity
08/23/2000CN2393285Y Ceiling type loudspeaker box
08/23/2000CN1264532A Electrolytic loudspeaker assembly
08/22/2000US6108432 Surface mount electromagnetic sound producing device
08/22/2000US6108416 Communication device with acoustic path passing through keyboard key
08/22/2000US6105714 Hearing protection device
08/22/2000CA2168597C Reflex compression valve-divided chamber loudspeaker cabinet
08/18/2000CA2263648A1 Stick-on telephone ear-piece cover
08/17/2000WO2000048428A2 Exciter for imparting bending wave energy to a panel
08/17/2000WO2000048427A2 Method and system of compensating for boundary effects on a primary sound source
08/17/2000WO2000048425A2 Bending wave panel-form loudspeaker
08/17/2000WO2000033612A3 Bending wave acoustic devices
08/17/2000CA2361295A1 Loudspeakers
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