Patents
Sitemap › H04 - Electric communication technique › H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; Deaf-aid sets; Public address systems › H04R 7 - Diaphragms for electromechanical transducers; Cones
Patents for H04R 7 - Diaphragms for electromechanical transducers; Cones (6,555)
10/2003
10/30/2003WO2002093972A3 Acoustic member for a loudspeaker comprising a component having a selected frequency dependence and method of making same
10/30/2003WO2002039781A3 Loudspeaker driver
10/30/2003US20030202675 Speaker apparatus
10/30/2003US20030202674 Speaker
10/29/2003EP1356707A2 Electroacoustic conversion of audio signals, especially voice signals
10/29/2003CN1452434A Microacoustic device based on clamped diaphragm structure and mfg. method thereof
10/29/2003CN1126429C Electroacoustic transducer and diaphragm for electroacoustic transducer
10/23/2003WO2003088708A1 Number of individual resonances for acoustics
10/22/2003EP1354496A1 An electroacoustic transducer
10/22/2003EP1183904B1 Method for producing membranes for electroacoustic transducers and membranes obtained by this method
10/21/2003US6634456 Vibrating diaphragm of false speaker structure
10/16/2003WO2003032679A3 Loudspeaker
10/16/2003WO2003019976A3 Acoustic device
10/16/2003WO2002082855A3 Loudspeaker
10/16/2003WO2002023946A3 Flat loudspeaker
10/16/2003US20030194104 Ultra low frequency transducer and loud speaker comprising same
10/15/2003CN1449223A Edge body for loudspeaker and method for forming same
10/14/2003US6633649 Quick release spider clamp for loudspeakers
10/09/2003WO2003083427A2 Corrugated diaphragm
10/09/2003US20030190051 Full range loudspeaker
10/09/2003US20030188919 Surround for speaker system and manufacturing method thereof
10/08/2003EP1351547A2 Surround for speaker system and manufacturing method thereof
10/08/2003EP1351546A2 Speaker capable to playback in wide frequency range
10/08/2003EP1351545A2 Entertainment sound panels
10/08/2003EP1351542A2 Ceiling speaker system of aircraft
10/08/2003EP1084592B1 Resonant panel-form loudspeaker
10/08/2003EP0974243B1 An electroacoustic transducer and a diaphragm for an electroacoustic transducer
10/02/2003US20030185416 Speaker capable to playback in wide frequency range
10/02/2003US20030185415 Speaker
10/02/2003US20030183888 Corrugated diaphragm
10/02/2003US20030183443 Entertainment sound panels
10/02/2003CA2421730A1 Entertainment sound radiators
10/01/2003EP1250827B1 Transducer
10/01/2003EP1070309B1 Method and apparatus for conveying audiovisual information
09/2003
09/30/2003US6627805 Audio device and method including a membrane having at least two tongues with different resonant frequencies
09/30/2003US6627140 Method for manufacturing diaphragm for loudspeaker
09/25/2003WO2003015462A3 Loudspeaker with a three-dimensional diaphragm
09/25/2003WO2002065813A3 Method for manufacturing an electroacoustical transducer comprising a membrane configuration
09/24/2003EP1346600A2 Loudspeaker systems
09/24/2003EP1108345B1 Loudspeakers comprising a resonant panel-form member
09/24/2003CN1122436C Loudspeaker vibrating diaphragm and methods for its production
09/23/2003US6622817 Sound reproduction device working according to the bending wave principle
09/18/2003WO2003057534A3 Vehicle trim panel/radiator element system
09/18/2003WO2002054822A3 Device for sound transmission and irradiation
09/17/2003EP1345391A1 Communication terminal including a flat loudspeaker operated over a turn arrengement
09/17/2003EP1222838B1 Keyboard comprising a loudspeaker
09/17/2003EP1172019B1 Piezoelecric vibration exciter
09/17/2003CN1443022A 扬声器装置 Speaker system
09/16/2003US6621912 Speaker
09/16/2003US6621911 Multifunction acoustic device
09/16/2003US6621908 Speaker apparatus and electronic apparatus having speaker apparatus enclosed therein
09/16/2003CA2273936C Panel-form loudspeaker
09/12/2003WO2002063604A3 Loudspeaker
09/10/2003EP1343354A1 Method for manufacturing speaker
09/10/2003EP1343349A1 Speaker, speaker module, and electronic equipment using the speaker module
09/10/2003EP0920785B1 Loudspeaker drive units
09/09/2003US6618487 Electro-dynamic exciter
09/04/2003WO2003073787A1 Planar speaker
09/04/2003US20030164262 Speaker apparatus
09/03/2003EP1340407A2 Loudspeakers
08/2003
08/28/2003WO2003071832A1 Thin speaker and method of manufacturing the speaker
08/28/2003WO2002082856A3 Loudspeaker and method of making same
08/28/2003US20030161494 Acoustic transducer for broad-band loudspeakers or headphones
08/27/2003EP1174001B1 Bending- wave panel loudspeakers
08/27/2003CN1438820A Loud-speaker and manufacturing method
08/27/2003CN1119917C Cantilever-type vibration membrane structure for miniature microphone and loudspeaker and its making method
08/26/2003US6611604 Ultra low frequency transducer and loud speaker comprising same
08/26/2003US6610237 Method of making a loudspeaker drive unit having a resiliently suspended panel-form member
08/21/2003WO2003069950A1 Card sound device and electronic apparatus having same
08/21/2003WO2003043747A3 Manufacture having double sided features in a metal-containing web formed by etching
08/21/2003US20030156732 Speaker and method of manufacturing the same
08/21/2003US20030156731 Speaker having spacer ring inside frame
08/20/2003EP1336323A2 Wave field synthesys sound reproduction system using a distributed mode panel
08/20/2003EP1336322A2 Electromagnetic driver for a planar diaphragm loudspeaker
08/20/2003EP1336321A2 Electrodynamic bending moment driver
08/20/2003EP1197120B1 Bending wave panel speaker and method of driving such a speaker
08/20/2003CN1118505C Moulding foamed products, its forming method and loudspeaker diaphragm constituted therewith
08/14/2003WO2002089522A3 Loudspeaker
08/14/2003WO2002043437A8 Wave field synthesys sound reproduction system using a distributed mode panel
08/14/2003US20030150572 Loudspeaker and method for the preparation thereof
08/12/2003US6606390 Loudspeakers
08/07/2003WO2003065765A1 Device and method for manufacturing speaker diaphragm, the diaphragm, and speaker
08/07/2003WO2003065762A1 Speaker for super-high frequency range reproduction
08/07/2003WO2003065760A2 Low profile audio speaker
08/07/2003US20030147541 Flat-panel loudspeaker
08/06/2003EP1333699A1 Speaker edge, method of foam-molding the same, apparatus for foam-molding the same, speaker edge foam-molding system, and speaker employing the speaker edge
07/2003
07/31/2003WO2003063545A1 Flexible diaphragm with integrated coil
07/31/2003WO2003063544A1 Diaphragm for speaker and polyamide-imide resin and polyimide resin for the same
07/31/2003WO2002062096A3 Electroacoustic conversion of audio signals, especially voice signals
07/31/2003US20030141414 Ceiling speaker system of aircraft
07/31/2003DE20307321U1 Room acoustics surface with one side for sound absorption and one side for sound production
07/30/2003EP1153526B1 Bending wave panel-form loudspeaker
07/30/2003EP1078553B1 Sound reproduction device working according to the bending wave principle
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
07/23/2003EP1186203B1 Bending wave acoustic device
07/17/2003WO2003059008A2 Diaphragm suspension assembly for loudspeaker transducers
07/17/2003WO2003057534A2 Vehicle trim panel/radiator element system
07/16/2003EP1166598B1 Electroacoustic transducer with a diaphragm, and method for fixing a diaphragm in such transducer
07/15/2003US6594372 Electroacoustic transducer
07/15/2003US6593847 Planar acoustic converting apparatus
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