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)
12/1998
12/24/1998DE19831221A1 Three-piece loudspeaker housing
12/24/1998DE19726595A1 Acoustic two-tone call signal radiation method for loud-speaker telephone
12/23/1998WO1998044760A3 Wired open ear canal earpiece
12/23/1998EP0886457A1 A ported speaker enclosure of a portable computer
12/23/1998EP0885547A1 Amplified bicycle sound system
12/23/1998EP0885546A1 Wearable audio system with enhanced performance
12/23/1998EP0885545A1 Sound reproducing array processor system
12/23/1998CN2301824Y Box body for loudspeaker box
12/23/1998CN2301823Y Microphone sterilizer
12/23/1998CN2301822Y Multifunctional sound change microphone
12/23/1998CN2301821Y Balanced phase reversal second loudspeaker box
12/23/1998CN2301820Y Earpiece and microphone cord taking-in device
12/22/1998US5852654 Coupling device for use with a computer system
12/22/1998US5852545 Detachable electrical and mechanical mounting mechanism for snap mounting computer speakers
12/22/1998US5851334 Method of producing casing for audiovisual equipment
12/17/1998WO1998057522A1 Electrolytic loudspeaker assembly
12/17/1998WO1998042160A3 Broadband loudspeaker
12/16/1998CN2301027Y Frequency respone improved ecentric hole type telephone microphone
12/16/1998CN2301026Y Ear hanging frame for earphone
12/16/1998CN1202090A Front-locking swivel ball loudspeaker mount
12/15/1998US5850462 Speaker component, speaker, and its manufacturing method
12/15/1998US5850460 Bass speaker
12/10/1998WO1998056209A2 Video-assisted apparatus for hearing impaired persons
12/10/1998WO1998055709A1 Acoustical room paneling and method of installation
12/10/1998WO1998035529A3 Elastomeric dielectric polymer film sonic actuator
12/10/1998DE19723644A1 Low emission headphones
12/09/1998CN1201574A Method and device to fasten a loudspeaker to circuit board
12/09/1998CN1201357A Application of high polymer composite material in high-fidelity voice box
12/09/1998CN1201181A Thin-film loudspeaker used in thin-film video-frequency monitor apparatus
12/08/1998US5848172 Directional microphone
12/08/1998US5848170 Acoustic antenna for computer workstation
12/08/1998US5847333 Electrodynamic loudspeaker and system comprising the loudspeaker
12/08/1998US5847331 Speaker propagating phase and time coherent sound waves
12/03/1998WO1998054925A1 An electrical contact free microphone attachment for a flip-type radio phone
12/03/1998WO1998053924A1 Flexural plate sound transducer having low resonant frequency
12/02/1998EP0881856A1 Acoustic piezoelectric vibrator and loudspeaker using the same
12/02/1998EP0881624A2 Ultrasonic sensor and its ultrasonic resonator
12/02/1998EP0880502A1 Aminoheterocyclic derivatives as antithrombotic or anticoagulant agents
12/02/1998CN1200644A New structure of Hi-Fi sound-box
12/02/1998CN1200614A Communication device, notably telephony device
12/02/1998CN1041046C Ear phone
12/02/1998CN1041042C Noise cancellation apparatus, and telephone set having same
12/01/1998US5845197 Portable electronic device with associated earphone
12/01/1998US5844999 Device for and method of attaching a speaker
12/01/1998US5844998 Headphone apparatus
12/01/1998US5844984 Two-way communications earset with filter
12/01/1998US5844176 Speaker enclosure having parallel porting channels for mid-range and bass speakers
11/1998
11/26/1998WO1998053640A1 Loudspeaker suspension device and fabricating method thereof
11/26/1998WO1998053638A2 Acoustic apparatus comprising an array of loudspeakers
11/26/1998WO1998052503A1 Ear phone assembly for use with a hearing screener
11/26/1998CA2290466A1 Acoustic apparatus comprising an array of loudspeakers
11/25/1998EP0880300A2 Acoustic horns for loudspeakers
11/25/1998EP0880299A1 Miniature microphone arrangement
11/25/1998CN2298628Y Microphone mouthpiece base
11/25/1998CN2298627Y Lead wire
11/24/1998US5841877 Vehicle armrest transducing
11/19/1998WO1998052383A1 Vibration transducers for resonant panel-form loudspeaker and loudspeaker with the same
11/19/1998WO1998052381A2 Panel-form loudspeakers
11/19/1998WO1998052289A1 Vehicular loudspeaker system
11/19/1998CA2290476A1 Panel-form loudspeakers
11/19/1998CA2290103A1 Vibration transducers for resonant panel-form loudspeaker and loudspeaker with the same
11/18/1998EP0877680A1 Speaker support bar and sound chamber above vehicle headliner
11/18/1998CN2297827Y Artificial stony integral voice box
11/18/1998CN2297826Y Combined voice box
11/18/1998CN1199317A Loudspeaker unit
11/18/1998CN1199316A Wet disinfecting towel specially for telephone set
11/17/1998US5838809 Speaker
11/17/1998US5838637 Hydrophone and process for manufacturing it
11/17/1998US5838284 Spiral-shaped array for broadband imaging
11/17/1998US5837454 Process for the manufacture of wholly microfabricated biosensors
11/17/1998US5837446 Process for the manufacture of wholly microfabricated biosensors
11/17/1998US5836790 Radio telephone connector
11/12/1998WO1998051122A1 Horn loaded microphone with helmholtz resonator attenuator
11/12/1998WO1998051121A1 Loudspeaker systems
11/12/1998DE19718993A1 Damping unit for vibration damping
11/12/1998DE19717278C1 Vorrichtung zur Klangerzeugung in einem Kraftfahrzeug Apparatus for producing sound in a motor vehicle
11/12/1998CA2288060A1 Loudspeaker systems
11/11/1998EP0876740A1 Loudspeaker device
11/11/1998EP0876739A1 Headset and method for a headset
11/11/1998CN2297028Y Vertical cylindrical whole diapason HF sound cylinder
11/11/1998CN1198649A Sound device for equipment
11/11/1998CN1198648A Multi-function earphone-telephone device
11/11/1998CN1198647A Loudspeaker installing structure
11/10/1998US5835612 Speaker apparatus
11/05/1998WO1998049867A1 Interchangeable earpiece for stereo listening
11/05/1998CA2204488A1 Protective cover for telephones
11/04/1998EP0876078A1 Loudspeaker grille detachably mounted on a loudspeaker enclosure
11/04/1998EP0875125A1 Flexible interlink for hydrophone array
11/04/1998EP0781446B1 Directional ear device with adaptive bandwidth and gain control
11/04/1998CN1198292A Electrodynamic loudspeaker and system comprising the loudspeaker
11/04/1998CN1040607C Sound generating device
11/04/1998CN1040606C Electracoustic transducer and method of fabricating the same
11/03/1998US5832099 Speaker system having an undulating rigid speaker enclosure
11/03/1998US5832098 Earphone/microphone assembly
11/03/1998US5832079 Acoustic horn for use in cellular flip phones
11/03/1998US5832077 Microphone/loudspeaker having a speakerphone mode and a microphone/loudspeaker mode
11/03/1998US5831938 Lead terminal connection structure of an electroacoustic transducer
11/03/1998US5830007 Electrical connector for a microphone
11/03/1998US5829062 Headband with dual material construction for supporting ear protectors
10/1998
10/29/1998WO1998048595A1 Electronic appliance comprising an electroacoustic transducer
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