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)
10/2003
10/01/2003EP1348314A1 Directional microphone
10/01/2003EP1250827B1 Transducer
10/01/2003EP1070309B1 Method and apparatus for conveying audiovisual information
10/01/2003CN2577524Y Parabolic focusing acoustic wave signal pick-up
10/01/2003CN2577523Y Adjustment structure of earphone suitable for different ear shapes
10/01/2003CN1446022A Vertical type pop-up sound box
10/01/2003CN1446021A Loudspeaker system
10/01/2003CN1123276C Loudspeaker unit
10/01/2003CN1123219C Television set comprising loudspeaders and decoder with surround sound audio signals
10/01/2003CN1122960C Sound generator for portable device
09/2003
09/30/2003US6628799 Loudspeaker system
09/30/2003US6628797 Loudspeaker-and-pre-stressed cabinet
09/30/2003US6628796 Axially propagating mid and high frequency loudspeaker systems
09/30/2003US6628793 Speaker system
09/30/2003US6628792 Back to back mounted compound woofer with compression/bandpass loading
09/30/2003US6626833 Ultrasonic diagnosis system
09/30/2003US6626263 Passive speaker system
09/30/2003US6626262 Waterproof speaker
09/30/2003US6625819 Headphone type earpiece assembly and earpieces for the headphone type earpiece assembly
09/25/2003WO2003079725A2 Resonator device and associated circuits
09/25/2003WO2003079720A1 Speaker mounting system
09/25/2003WO2003079719A1 Bass reflex type speaker device, mounting structure and mounting method for speaker device
09/25/2003WO2003079718A1 Image display device
09/25/2003WO2003079654A2 Apparatus and system for providing wideband voice quality in a wireless telephone
09/25/2003WO2003079486A1 Beam forming array of transducers
09/25/2003WO2003079461A1 Electro-active device using radial electric field piezo-diaphragm for sonic applications
09/25/2003WO2003019982A3 Ear coupler
09/25/2003WO2003015462A3 Loudspeaker with a three-dimensional diaphragm
09/25/2003US20030182003 Playback apparatus, headphone, and playback method
09/25/2003US20030179899 Loudspeaker with shaped sound field
09/25/2003US20030179898 Microphone with a rotatable protective sleeve
09/25/2003DE10217822C1 Viewing direction identification method for vehicle driver using evaluation of speech signals for determining speaking direction
09/24/2003EP1346604A1 Condenser microphone assembly
09/24/2003EP1346601A2 Miniature silicon condenser microphone and method for producing same
09/24/2003EP1108345B1 Loudspeakers comprising a resonant panel-form member
09/24/2003EP1000525B1 Loudspeaker system having a bass-reflex port
09/24/2003EP0801785B1 Communications headset
09/24/2003CN2575926Y Radiating fin fixing structure
09/24/2003CN1444801A Radiation-free cellular telephone system
09/24/2003CN1444417A Microphone with display
09/23/2003US6625293 Microphone
09/23/2003US6625292 Ported loudspeaker enclosure
09/23/2003US6625291 Diffused resonance loudspeaker enclosure method
09/23/2003US6625289 Stereo loudspeaker system
09/23/2003US6622820 Pop shield for microphone
09/23/2003US6622817 Sound reproduction device working according to the bending wave principle
09/18/2003WO2003057534A3 Vehicle trim panel/radiator element system
09/18/2003US20030174855 Speaker mounting system
09/18/2003US20030174854 Personal audio-set with pivoting ear clip mount
09/18/2003US20030174853 Antihelix-conforming ear-mount for personal audio-set
09/18/2003US20030174852 Directional microphone arrangement and method for signal processing in a directional microphone arrangement
09/18/2003US20030174851 System and method to improve the low frequency performance of electro acoustic transducers
09/18/2003US20030174849 Loudspeaker system
09/18/2003US20030174848 Audio receiver system with movable headset plug
09/18/2003US20030173874 Electro-active device using radial electric field piezo-diaphragm for sonic applications
09/18/2003US20030173485 Suspending device
09/18/2003US20030173145 Acoustic transmission connection, headset with acoustic transmission connection, and uses of the acoustic transmission connection
09/18/2003DE20309771U1 Bass reflex tube for loudspeaker box, has circular, oval or polygonal cross-section and straight or trumpet-shaped ends
09/17/2003EP1345469A1 Loudspeaker system
09/17/2003EP1344426A2 Programmable headset, programming apparatus and method
09/17/2003EP1344198A1 Method and arrangement for processing noise signals from a noise source
09/17/2003CN2574324Y Swivel earphone
09/17/2003CN1443432A Directional microphone arrangement and method for signal processing in directional microphone arrangement
09/17/2003CN1443019A Box body of loudspeaker
09/17/2003CN1442990A Wearable elestron device
09/16/2003US6621911 Multifunction acoustic device
09/16/2003US6621910 Method and arrangement for improving leak tolerance of an earpiece in a radio device
09/16/2003US6621909 Horn loudspeaker and loudspeaker systems
09/16/2003US6621905 Earphone support
09/16/2003US6619595 Rear tray having speaker grill and method for installing speaker grill and rear tray to vehicle panel
09/16/2003US6619424 Speaker enclosure configured to minimize diffraction
09/16/2003CA2290437C Video-assisted apparatus for hearing impaired persons
09/16/2003CA2273936C Panel-form loudspeaker
09/12/2003WO2003075608A1 Antihelix-conforming ear-mount for personal audio-set
09/12/2003WO2003075607A1 Personal audio-set with pivoting ear clip mount
09/12/2003WO2003075606A1 Loudspeaker with shaped sound field
09/12/2003WO2003075605A1 Modular micriophone array for surround sound recording
09/12/2003WO2003075604A2 Headphone
09/12/2003WO2003075603A2 Digital microphone
09/12/2003WO2003022000A3 Interchangeable pivoting loudspeaker assembly with spring retained high frequency transducer
09/12/2003WO2003001841A3 Loudspeaker
09/12/2003WO2002063604A3 Loudspeaker
09/11/2003US20030169898 Headphone device
09/11/2003US20030169897 Head phone device
09/11/2003US20030169896 Ear clip speakers that interlock and enable cord spooling
09/11/2003US20030169891 Low-noise directional microphone system
09/11/2003US20030169889 Spa audio system
09/11/2003US20030168946 Radial power megasonic transducer
09/10/2003EP1343350A2 Housing for handsfree directional microphone
09/10/2003EP1343349A1 Speaker, speaker module, and electronic equipment using the speaker module
09/10/2003EP1343348A2 Fully collapsible headset
09/10/2003EP1183903B1 Loudspeaker assembly
09/10/2003EP1180319B1 Adjustable brace, e.g., ear-brace
09/10/2003CN2572699Y Car loudspeaker with inclined opening
09/10/2003CN2572698Y Car loudspeaker
09/10/2003CN2572677Y Earphone box
09/10/2003CN2571196Y Helmet with 3-D display and stereo headphone
09/10/2003CN1442028A 过滤器 Filter
09/10/2003CN1441625A Contact point connection of electrostatic microphone converter
09/10/2003CN1441621A Pressure gradient microphone carbon capsule
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