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)
08/2003
08/14/2003US20030151678 Camcorder combinable with a plurality of sound acquiring units
08/14/2003US20030150668 Spiral acoustic waveguide electroacoustical transducing system
08/14/2003US20030150572 Loudspeaker and method for the preparation thereof
08/14/2003DE20305907U1 Adaptor for coupling loudspeaker driver to its horn, especially for tweeter, comprises large outward bulge on opposite walls of envelope
08/14/2003DE20305469U1 Helmet holder for speech set/lamp for firefighter helmet, has 4 bores in 3 different sizes for multi-functional use of holder, and attachment of different manufacturers' speech sets or lamp holders
08/13/2003EP1335629A2 Spiral acoustic waveguide electroacoustical transducing system
08/13/2003EP1335628A2 Camcorder
08/13/2003EP1334603A1 Headset
08/13/2003EP0669781B1 Speaker system
08/13/2003CN2566564Y Hands-free receiver
08/13/2003CN1436436A Method and apparatus for voice signal extraction
08/12/2003US6606392 Speaker device
08/12/2003US6606390 Loudspeakers
08/12/2003US6606278 Method for multiple suppression based on phase arrays
08/12/2003US6604602 Separable speaker cover box containing speaker system
08/12/2003US6604363 Matching an acoustic driver to an acoustic load in an acoustic resonant system
08/12/2003US6604271 Process for processing a conductive damper for use in speaker
08/12/2003CA2348250C Acoustically active hot tub
08/07/2003WO2003065761A1 Modular loudspeaker
08/07/2003WO2003065760A2 Low profile audio speaker
08/07/2003WO2003065387A1 Inductive device
08/07/2003WO2003065347A1 Method and apparatus for focussing ultrasonic energy
08/07/2003WO2003013183A8 Improvements in acoustic enclosures
08/07/2003WO2002080615A3 Ear microphone apparatus and method
08/07/2003US20030147545 Receiver
08/07/2003US20030147542 Outer mirror and interphone for a vehicle
08/07/2003US20030147539 Audio system based on at least second-order eigenbeams
08/07/2003US20030147528 Protective phone cover and method of using same
08/07/2003CA2474261A1 Inductive device
08/06/2003EP1333698A2 Directional loudspeaker unit
08/06/2003EP1332922A2 Microphone assembly for a vehicular hands-free device and vehicular hands-free device
08/06/2003EP1332643A1 An electret condenser microphone
08/06/2003CN1435073A Multi-channel headphones
08/06/2003CN1435072A Speaker installation structure
08/05/2003US6603863 Headphone apparatus for providing dynamic sound with vibrations and method therefor
08/05/2003US6603862 Spherical loudspeaker system
08/05/2003US6603859 Speaker with drive mechanism
08/05/2003CA2205488C A flexible microphone boom
07/2003
07/31/2003WO2003063367A2 Adjustable support apparatus
07/31/2003WO2002062096A3 Electroacoustic conversion of audio signals, especially voice signals
07/31/2003WO2001080353A9 Vehicle rearview mirror assembly incorporating a communication system
07/31/2003US20030142844 Dual-tweeter loudspeaker
07/31/2003US20030142836 Microphone array having a second order directional pattern
07/31/2003US20030142835 Sound output apparatus for an automotive vehicle
07/31/2003US20030141954 Inductive device
07/31/2003US20030141414 Ceiling speaker system of aircraft
07/31/2003US20030141142 Garden speaker
07/31/2003US20030141141 Speaker enclosure and mounting method for isolating and insulating faceplate and heavy speakers from surrounding mounting surface
07/30/2003EP1331490A1 Sound source probing system
07/30/2003EP1330940A1 Directional microphone assembly
07/30/2003EP1330936A1 Direct coupling of waveguide to compression driver having matching slot shaped throats
07/30/2003EP1330935A1 Multi-channel headphone system
07/30/2003EP1177704B1 Sounders for fire alarm systems
07/30/2003EP1153526B1 Bending wave panel-form loudspeaker
07/30/2003EP1078553B1 Sound reproduction device working according to the bending wave principle
07/30/2003CN2563875Y Outdoor light acoustic box
07/30/2003CN2563874Y 无线麦克风 Wireless Microphone
07/30/2003CN1116123C Portable communication equipment
07/29/2003US6600826 Modularly expandible, multi-user audio headphone
07/29/2003US6600824 Microphone array system
07/29/2003US6600399 Transducer motor/generator assembly
07/29/2003US6598711 Indicating device
07/29/2003US6598700 Compression molded cellulose (CMC) loudspeaker cabinets and method for making same
07/25/2003CA2417036A1 Garden speaker
07/24/2003WO2003061342A1 Constant coverage waveguide
07/24/2003WO2003061336A1 Audio system based on at least second-order eigenbeams
07/24/2003WO2002074011A3 Method for establishing a binaural communication link and binaural hearing devices
07/24/2003US20030138124 Floral or gift display with remote voice or sound recording and playback capability
07/24/2003US20030138123 Electronic device comprising a loudspeaker unit
07/24/2003US20030138121 Ultrasonic converter unit having electrodes made of electrically-conductive plastic
07/24/2003US20030138120 Stepped sound producing module
07/24/2003US20030138111 Noise-suppressing receiver
07/24/2003US20030137406 Electromagnetic induction type actuator and portable communications device
07/24/2003US20030136885 Adjustable support apparatus
07/24/2003US20030136605 Structure for mounting speaker
07/24/2003DE10207561C1 Loudspeaker for HF audio range has elastic centring device coupled to membrane or oscillating coil system at one side and to magnetic system at other side
07/23/2003EP1329875A2 Ultrasound transducer with electrically conducting plastic electrodes
07/23/2003EP1329133A1 Near-field speaker/microphone acoustic/seismic dampening communication device
07/23/2003EP1329132A1 Power efficient electrical stimulation
07/23/2003EP1329084A2 User interface for a portable communication device
07/23/2003EP1328753A2 Holder for electronic device, such as a microphone
07/23/2003EP1186203B1 Bending wave acoustic device
07/23/2003EP1142446B1 Speaker system
07/23/2003EP0963681A4 Directed acoustic stick radiator
07/23/2003CN2562537Y Winding casing of earphone with charging function
07/23/2003CN1432133A Method and appts. for discriminating ultrasonic echoes using wavelet function processing
07/23/2003CN1431848A Sound box with bipyramid acoustic horn built in
07/23/2003CN1115847C Radio telephone with acoustic horn
07/22/2003US6597798 Loudspeaker
07/22/2003US6597797 Spherical loudspeaker system with enhanced performance
07/22/2003US6597796 Microphone with a variable resistance switch
07/22/2003US6597795 Device to improve loudspeaker enclosure duct
07/22/2003US6597792 Headset noise reducing
07/17/2003WO2003059009A1 Detection of sound waves produced by a musical instrument
07/17/2003WO2003059007A2 Microphone support system
07/17/2003WO2003059006A2 Method of compensating the effects of undesired vibrations impinging an audio component and system therefor
07/17/2003WO2003059005A2 Digital loudspeaker system
07/17/2003WO2003057534A2 Vehicle trim panel/radiator element system
07/17/2003WO2002034006A3 Thin speaker assembly and personal electronic devices
07/17/2003WO2002011494A3 System for integrating mid-range and high frequency acoustic sources in multi-way loudspeakers
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