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)
07/1998
07/15/1998EP0755617B1 A modular tweeter
07/15/1998EP0703741B1 Vibration isolation platform
07/15/1998CN2286362Y 麦克风受话器 Microphone Receiver
07/14/1998US5781645 Loudspeaker system
07/14/1998US5781644 Pick-up device for a microphone
07/14/1998US5781643 To generate electrical audio signal corresponding to speech of users
07/14/1998US5781642 Speaker system
07/14/1998US5781638 Electro-acoustic transducer
07/09/1998WO1998030065A1 Directional microphone assembly
07/08/1998EP0852105A1 Earphones with eyeglass attachments
07/08/1998EP0852104A1 Acoustically transparent earphones
07/08/1998EP0792568A4 Noise cancellation apparatus
07/08/1998EP0792567A4 Noise cancellation headset for use with stand or worn on ear
07/08/1998CN2285945Y On-desk microphone rest
07/08/1998CN1187087A Loudspeaker housing for video display appliance
07/07/1998US5778085 Audio conference device having echo canceller
07/07/1998US5778084 Loudspeaker with phase correction
07/07/1998US5778083 Multi-channel sound reproduction system
07/07/1998US5778082 Method and apparatus for localization of an acoustic source
07/02/1998WO1998028942A1 Electroacoustic transducers comprising vibrating panels
07/02/1998WO1998010252A3 Wafer fabricated electroacoustic transducer
07/02/1998CA2273025A1 Electroacoustic transducers comprising vibrating panels
07/01/1998EP0756464B1 Umbrella
07/01/1998CN1186405A Two way speaker having dual magnetic circuit
06/1998
06/25/1998WO1998027710A1 Dual use speaker for both voice communication and signalling
06/25/1998DE19706074C1 Directional microphone with symmetrical directional effect
06/25/1998DE19647601A1 Pulse regulated bass reflex tube for ventilated loudspeaker housing
06/24/1998EP0848893A1 Headset with ear cushion and means for limiting the compression of the cushion
06/24/1998EP0580579B1 Noise control apparatus
06/24/1998CN2285039Y Device for winding circuit lead of earphone and microphone
06/24/1998CN1038892C Disinfective hyginic towl for telephone set and its producing method thereof
06/23/1998US5771304 Apparatus including a loudspeaker unit, loudspeaker unit, and housing for a loudspeaker unit
06/23/1998US5771302 Subwoofer--loudspeaker box
06/23/1998US5771154 Heatsink assembly for a high-power device
06/23/1998US5771091 Sensor and a method for measuring distances to, and/or physical properties of, a medium
06/18/1998WO1998026630A1 Panel-form loudspeaker
06/18/1998WO1998026405A2 Directed acoustic stick radiator
06/17/1998EP0847678A1 Panel-form microphones
06/17/1998EP0847677A1 Inertial vibration transducers
06/17/1998EP0847676A1 Inertial vibration transducers
06/17/1998EP0847674A2 Musical instruments incorporating loudspeakers
06/17/1998EP0847673A2 Display screens incorporating loudspeakers
06/17/1998EP0847672A2 Packaging
06/17/1998EP0847671A2 Personal computers
06/17/1998EP0847670A1 Display screens incorporating loudspeakers
06/17/1998EP0847669A2 Visual display means incorporating loudspeakers
06/17/1998EP0847668A1 Loudspeakers with panel-form acoustic radiating elements
06/17/1998EP0847667A1 Noticeboards incorporating loudspeakers
06/17/1998EP0847666A1 Panel-form loudspeakers
06/17/1998EP0847665A1 Panel-form loudspeakers
06/17/1998EP0847664A2 Loudspeakers comprising panel-form acoustic radiating elements
06/17/1998EP0847663A1 Passenger vehicles incorporating loudspeakers comprising panel-form acoustic radiating elements
06/17/1998EP0847662A1 Loudspeakers comprising panel-form acoustic radiating elements
06/17/1998EP0847661A2 Acoustic device
06/17/1998EP0847660A2 Greetings or the like card
06/17/1998EP0847659A1 Loudspeakers comprising panel-form acoustic radiating elements
06/17/1998EP0847567A1 A vending machine
06/17/1998CN2284477Y Stone material loudspeaker
06/16/1998US5768398 Signal amplification system with automatic equalizer
06/16/1998US5768216 Flexitensional transducer having a strain compensator
06/11/1998WO1998025438A1 Acoustic isolation of vibration transducer
06/11/1998WO1998025038A2 Tilt adjustment device for a boom stand
06/10/1998EP0847225A2 Electroacoustical transducing
06/10/1998EP0847224A1 Device for detecting sound sources and method for operating the same
06/10/1998EP0847223A1 Conical attachment for a loudspeaker and a loudspeaker arrangment comprising such an attachment
06/10/1998EP0847222A2 Retaining grid
06/10/1998EP0845955A1 Acoustical earmuff with incorporated snap-in foam cushion
06/10/1998CN2283954Y Louderspeaker box mounting
06/09/1998US5764783 Variable beamwidth transducer
06/09/1998US5764782 Acoustic reflector
06/09/1998US5764778 Hearing aid headset having an array of microphones
06/09/1998US5764777 Four dimensional acoustical audio system
06/09/1998US5764776 System for imparting sensory effects across a mother's abdomen to a fetus
06/09/1998US5762583 Vibrator for an implantable hearing system
06/09/1998CA2045102C Loudspeaker arrangement in television receiver cabinet
06/04/1998WO1998024268A1 Speaker system
06/04/1998WO1998024214A1 Telephone handset, cordless telephone or mobile telephone
06/04/1998DE19649595A1 Microphone transmission factor measurement method
06/03/1998EP0845494A1 Material for casing for acoustic equipment and casing for acoustic equipment fabricated therefrom
06/03/1998EP0844838A1 A mounting foot device for hi-fi equipment
06/03/1998CN1183882A Compact full-range loudspeaker system
06/03/1998CN1038635C Double-brake water-wave type resonant plate
06/02/1998US5761323 Device for and method of attaching a speaker
06/02/1998US5761322 Portable computer speaker enclosure
06/02/1998US5761298 Communications headset with universally adaptable receiver and voice transmitter
06/02/1998US5761156 Piezoelectric ultrasonic transducer
06/02/1998US5760825 Sound pickup system comprising a video system for the setting of parameters and setting method
06/02/1998US5758852 Modular loudspeaker enclosure suspension rigging system
05/1998
05/27/1998EP0843950A1 Passive radiator and system comprising the passive radiator
05/27/1998EP0843949A1 Electrodynamic loudspeaker and system comprising the loudspeaker
05/27/1998EP0787415A4 Multiple pulse stimulation
05/27/1998CN2282756Y Branched tube open-type loadspeaker box
05/27/1998CN1183018A Transmitter capable of reducing background noise
05/26/1998US5757946 Magnetic fluid loudspeaker assembly with ported enclosure
05/26/1998US5757944 Headset with adjustable earhook
05/26/1998US5757943 Movable boom mounting device
05/26/1998US5757934 Transmitting/receiving apparatus and communication system using the same
05/26/1998US5757929 Audio interface garment and communication system for use therewith
05/26/1998US5757104 Method of operating an ultransonic piezoelectric transducer and circuit arrangement for performing the method
05/25/1998CA2191147A1 Speaker system
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