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)
10/1999
10/07/1999DE19913132A1 Loud speaker for producing high audio frequencies using piezoelectric ceramic
10/06/1999EP0947121A1 Device including a built-in electroacoustic transducer for optimum speech reproduction
10/06/1999EP0947120A1 Speaker system
10/06/1999EP0947084A1 Dual use speaker for both voice communication and signalling
10/06/1999CN2342536Y Loudspeaker mounted with damping sound suction structure
10/06/1999CN2342535Y Loudspeaker box
10/06/1999CN2342534Y Flower vase loudspeaker
10/05/1999USRE36327 Electroacoustic transducer and method of fabricating the same
10/05/1999US5963640 For channeling sound energy from a speaker to an ear
09/1999
09/30/1999WO1999049698A1 Method and device for operating a microphone system, especially in a motor vehicle
09/30/1999WO1999049697A1 Directional microphone
09/30/1999DE19913558A1 Loudspeaker construction for reduced production costs
09/30/1999DE19812697A1 Verfahren und Einrichtung zum Betrieb einer Mikrofonanordnung, insbesondere in einem Kraftfahrzeug Method and apparatus for operating a microphone system, in particular in a motor vehicle
09/30/1999DE19811168A1 Loud speaker or microphone with a resonant membrane esp. made of paper layers stuck together
09/29/1999EP0945738A2 Underwater sensor device
09/29/1999EP0945042A1 Panel-form loudspeaker
09/29/1999CN2341333Y Microphone
09/29/1999CN2341332Y Speaker box with pillar declined opening
09/29/1999CN2341331Y Small size speaker box matched with small size bass box
09/29/1999CN1230331A Recording and play-back two-channel system for providing holophonic reproduction of sounds
09/28/1999US5960095 Loudspeaker assembly with adjustable directivity
09/28/1999US5960094 Communications headset
09/28/1999US5959364 Distance transmitting device mountable in an instrument panel air-outlet slit in a vehicle
09/28/1999US5959217 Fluid flow measuring device as a microphone and system comprising such a microphone
09/28/1999US5957553 Audiovisual equipment and casing thereof and method of producing the same
09/28/1999CA2185593C Portable loudspeaker/directional microphone peripheral
09/28/1999CA2173010C Noise canceling gradient microphone
09/28/1999CA2149563C Transmitter-receiver having ear-piece type acoustic transducing part
09/23/1999WO1999048326A1 Telephone with means for enhancing the low-frequency response
09/23/1999WO1999048325A1 Cushioned earphones
09/23/1999WO1999048324A1 Headset for aircraft
09/23/1999WO1999048083A1 Inertial/audio unit and construction
09/23/1999WO1999047208A1 Apparatus and method for mounting an ultrasound transducer
09/23/1999WO1999032017A9 A system and method for optimizing environments to facilitate agent processes
09/23/1999DE19911107A1 Method and device for fitting loudspeakers to a computer monitor
09/22/1999EP0944291A1 Antimicrobial shield
09/22/1999EP0944035A2 Method and apparatus for the focalisation of acoustic waves
09/22/1999EP0943224A1 Electroacoustic transducer comprising spring contacts formed with at least one bend
09/22/1999EP0886990B1 Process and device for transmitting sound
09/22/1999CN2340142Y Apparatus of changing wire microphone into wireless microphone
09/22/1999CN1229203A Method and device for hanging loudspeaker on outside of computer display
09/21/1999US5956622 Device for generating calling vibrations or calling sounds in cellular or pager phones
09/21/1999US5956412 Loudspeaker case structure for video display appliances
09/21/1999US5956293 Flexural plate sound transducer having low resonant frequency
09/21/1999US5955824 Reduced size electro-acoustic transducer with improved terminal
09/21/1999US5955823 High power ultrasonic transducer
09/21/1999CA2198116C Bandpass woofer and method
09/21/1999CA2007096C Shock-resistant flextensional transducer
09/16/1999WO1999046957A1 Microphone and receiver for automatic accompaniment
09/16/1999WO1999046956A1 Radial pickup microphone enclosure
09/16/1999WO1999046927A2 Method and apparatus for conveying audiovisual information
09/16/1999WO1999046759A2 Real-time ambient sound transformation for architectural barriers
09/16/1999WO1999030531A3 Buffering cover for preventing pains in using earphones
09/15/1999CN2338931Y Putting on head and automatically regulated type headphone
09/14/1999US5953436 Apparatus for generating an audible tone
09/14/1999US5953435 Intra-concha stabilizer with length adjustable conchal wall hook
09/14/1999US5953432 Line source speaker system
09/14/1999US5953414 Piezo-electric speaker capsule for telephone handset
09/14/1999US5952620 Omni-directional sub-bass loudspeaker
09/10/1999WO1999045686A1 Optical switch for headset
09/09/1999DE19813297C1 Underwater sensor device for ship echo sounder or speed measuring device
09/08/1999EP0941012A2 Attachment device for the attachment of a microphone at a musical instrument
09/08/1999EP0741899B1 Polyhedral directional transducer array
09/07/1999US5949896 Earphone
09/07/1999US5949893 Loudspeaker box
09/07/1999US5949033 Constrained layer damped loudspeaker enclosure
09/01/1999EP0939577A2 Loudspeaker pressure plate
09/01/1999EP0938281A1 Improved hearing protection device
09/01/1999CN2336533Y Speaker system with bass filter plate
09/01/1999CN1227513A Vibration generator for reporting and portable communication equipment using the same
08/1999
08/31/1999US5946403 Directional microphone for computer visual display monitor and method for construction
08/31/1999US5946401 Linear speaker array
08/31/1999CA2002848C Wholly microfabricated biosensors and process for the manufacture and use thereof
08/26/1999WO1999043135A1 Portable telephone with movable microphone unit
08/25/1999EP0938247A1 Holder equipped with an anisotropically conductive rubber connector and method for manufacturing the same
08/25/1999EP0937356A1 Radiotelephone having a non-resonant wave guide acoustically coupled to a microphone
08/25/1999EP0875125A4 Flexible interlink for hydrophone array
08/25/1999CN2335330Y Ear hanging type earphone microphone
08/25/1999CN1226797A Earpiece without impulse noise and loss by acoustic wave movement
08/24/1999US5943649 Configuring an audio interface for different microphone types
08/24/1999US5943431 Loudspeaker with tapered slot coupler and sound reproduction system
08/24/1999US5943430 Television stereophonic audio system
08/24/1999US5942735 Shock absorbing foot means adapted for supporting an audio equipment on a flat surface
08/24/1999US5942734 Noise-attenuating shielding unit and method for loudspeakers
08/19/1999WO1999041946A1 Earphone without impulse noise for protection against conductive hearing loss
08/19/1999WO1999041943A1 Loudspeaker with movable virtual point source
08/19/1999WO1999041942A1 Acoustic membrane oscillator
08/19/1999WO1999041939A1 Acoustic device comprising a panel member relying on bending wave action
08/19/1999CA2317550A1 Acoustic device comprising a panel member relying on bending wave action
08/18/1999EP0936841A1 Auricular device for patients with hypoacusis
08/18/1999EP0936838A2 Device for reproducing information
08/18/1999EP0936837A2 Electroacoustic transducer of digital type
08/18/1999CN2334127Y Forming structure of once-used sanitary cover for microphone
08/18/1999CN2334126Y Once-used sanitary cover for microphone
08/18/1999CN2334125Y Winding-free microphone joint
08/17/1999US5940347 Directed stick radiator
08/17/1999US5940118 System and method for steering directional microphones
08/17/1999US5939682 Composite vehicle trim panel
08/11/1999EP0934679A1 Enclosure for a microphone
08/11/1999EP0934475A1 Device for the damping of vibrations between objects
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