| Patents for H04R 7 - Diaphragms for electromechanical transducers; Cones (6,555) |
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| 07/15/2009 | CN101485211A Electrostatic speaker having ventilative diaphragm |
| 07/09/2009 | US20090175487 Diaphragm and Speaker Using Same |
| 07/09/2009 | DE102007062875A1 Flat surface loudspeaker, has bending resistant plate excited by flexural vibration for radiating sound via electromechanical transducers, and mechanical-electrical transducer for generating measuring signal corresponding to sound |
| 07/09/2009 | DE102007062874A1 Flat loudspeaker for use in field of acoustics, has plate, and voice coil that is mounted on plate for exciting plate to produce flexural vibrations, where plate has hole in inner side and hole is evacuated or filled with gas |
| 07/08/2009 | EP1733593B1 Transducer assembly and loudspeaker including rheological material |
| 07/08/2009 | CN101480067A 扬声器 Speaker |
| 07/08/2009 | CN101480066A 扬声器 Speaker |
| 07/08/2009 | CN101480065A 扬声器 Speaker |
| 07/07/2009 | US7558399 Vibrating plate of dynamic microphone and method of manufacturing the same |
| 07/02/2009 | WO2009082060A1 Diaphragm of the electronic sounder and the electronic sound which has the diaphragm |
| 07/02/2009 | WO2009080055A1 Asymmetric reinforcement of a membrane |
| 07/02/2009 | DE102007062424A1 Magnetic drive device for sound transducer i.e. air motion transformer, of loudspeaker arrangement, has pole plate structure with set of sound passage openings, and magnet elements arranged outside of plane defined by air gap |
| 06/24/2009 | CN101467468A Acoustic device and method of manufacturing same |
| 06/18/2009 | DE102007059724A1 Vorrichtung zur Wiedergabe von Schall bei hohen Temperaturen An apparatus for reproducing sound at high temperatures |
| 06/18/2009 | DE10153358B4 Elektroakustischer Wandler Electro-acoustic transducer |
| 06/17/2009 | EP2071869A1 Speaker apparatus providing with visual screen |
| 06/17/2009 | EP2071868A1 Vibrating system of panel form electrodynamic loudspeaker |
| 06/17/2009 | EP2070383A2 Point excitation placement in an audio transducer |
| 06/16/2009 | US7548766 Flat type speaker unit, and electronic appliance having this unit |
| 06/16/2009 | US7548632 Speaker, module using the same, electronic equipment and device, and speaker producing method |
| 06/16/2009 | US7548631 Speaker surround structure for maximizing cone diameter |
| 06/16/2009 | US7546897 Speaker diaphragm and method of manufacturing speaker diaphragm |
| 06/11/2009 | WO2009073578A2 Loudspeaker-transducer array |
| 06/10/2009 | EP2068586A2 Speaker apparatus and method for driving speaker |
| 06/10/2009 | CN101453680A Piston type plane loudspeaker |
| 06/10/2009 | CN100499876C Electroacoustic transducer comprising a membrane with an improved pleats area |
| 06/04/2009 | US20090139794 Diaphragm Surrounding |
| 06/03/2009 | CN201252638Y Flat-plate diaphragm |
| 06/03/2009 | CN100496057C Piezoelectric electroacoustic transducer |
| 06/02/2009 | US7542583 Loudspeaker |
| 05/28/2009 | WO2009066415A1 Speaker, video device, and mobile information processing device |
| 05/27/2009 | CN201248128Y Microtype phonating device |
| 05/26/2009 | US7539324 Loudspeaker diaphragm systems |
| 05/22/2009 | WO2009063568A1 Speaker device |
| 05/21/2009 | US20090129613 Acoustic device |
| 05/20/2009 | DE102007054528A1 Membrane is secured at a carrier by fasteners in a geometric layout which alters to keep the membrane taut on changes in heat and humidity |
| 05/20/2009 | CN101438601A Dome loudspeaker |
| 05/20/2009 | CN101437880A Biaxially oriented polyarylene sulfide film |
| 05/19/2009 | US7536211 Speaker system, mobile terminal device, and electronic device |
| 05/13/2009 | CN201238377Y Loudspeaker of flat plate loudspeaker box |
| 05/06/2009 | EP2056623A2 Speaker and method of manufacturing the same |
| 05/06/2009 | CN201234338Y Micro moving coil type electro-acoustic converter vibration system |
| 05/06/2009 | CN101427591A Condenser microphone |
| 05/06/2009 | CN100486361C Method for manufacturing an electroacoustical transducer comprising a membrane configuration |
| 05/05/2009 | US7529382 High fidelity loudspeaker |
| 05/05/2009 | US7529380 Multifunction-type vibration actuator and mobile terminal device |
| 05/05/2009 | US7529154 Hybrid thin film heterostructure modular vibration control apparatus and methods for fabrication thereof |
| 05/05/2009 | US7527124 Loudspeaker diaphragm |
| 04/30/2009 | WO2009054118A1 Electromagnetic converter |
| 04/29/2009 | CN201230369Y Composite diaphragm for micro loudspeaker |
| 04/29/2009 | CN101422049A Diaphragm unit and speaker using the same |
| 04/29/2009 | CN101420649A Horn vibrating reed |
| 04/29/2009 | CN100484260C Loudspeaker having acoustic panel and electrical driver |
| 04/29/2009 | CN100483190C Audio signal processing circuit and a display device incorporating the same |
| 04/29/2009 | CN100483187C Liquid crystal display device having sound output function and the like and electronic device using the same |
| 04/28/2009 | US7523537 Method of manufacturing a tuning fork with reduced quadrature errror and symmetrical mass balancing |
| 04/23/2009 | WO2009051347A1 Flat speaker |
| 04/22/2009 | EP1247424A4 Low cost broad range loudspeaker and system |
| 04/22/2009 | CN201226515Y Bluetooth music packsack |
| 04/16/2009 | WO2009048654A1 Integrated speaker and display |
| 04/16/2009 | US20090097693 Planar-magnetic speakers with secondary magnetic structure |
| 04/09/2009 | WO2009044506A1 Fine natural fiber and speaker diaphragm coated with fine natural fiber |
| 04/09/2009 | US20090090453 Speaker diaphragms, manufacturing methods of the same, and dynamic speakers |
| 04/09/2009 | DE10322692B4 Membran für elektroakustische Wandler, elektroakustischer Wandler und Lautsprecher Membrane for electroacoustic transducers, electro-acoustic transducer and speakers |
| 04/08/2009 | CN101406068A Bending wave acoustic device and method of making thereof |
| 04/08/2009 | CN100477814C Electromagnetic transducer and portable communication device |
| 04/07/2009 | US7515728 Speaker apparatus |
| 04/02/2009 | WO2009040898A1 Support member for speaker vibrator and speaker device |
| 04/02/2009 | WO2009012783A3 Cone tweeter membrane |
| 04/02/2009 | WO2009003658A3 Membrane having a multipart structure |
| 04/01/2009 | EP2041998A1 Speaker |
| 04/01/2009 | CN100474942C Transducer |
| 04/01/2009 | CN100474940C Electroacoustic transducer and manufacturing method thereof |
| 03/31/2009 | US7512035 Piezoelectric actuator, liquid transporting apparatus, and method of producing piezoelectric actuator |
| 03/31/2009 | US7510627 Acoustic paper diaphragm and acoustic transducer apparatus |
| 03/31/2009 | US7510048 Diaphragms for loudspeaker drive units |
| 03/31/2009 | US7510047 Speaker edge and resonator panel assembly |
| 03/26/2009 | WO2009038246A1 Ultra slim type acoustic transducer |
| 03/26/2009 | WO2009038084A1 Diaphragm and speaker including same |
| 03/25/2009 | EP2039214A2 Acoustic device and method of manufacturing same |
| 03/25/2009 | EP2039213A1 High frequency diaphragm and voice coil assembly |
| 03/25/2009 | EP1366636A4 Planar-magnetic speakers with secondary magnetic structure |
| 03/25/2009 | EP1269793A4 Single end planar magnetic speaker |
| 03/25/2009 | CN201213314Y Electric loudspeaker and diaphragm thereof |
| 03/25/2009 | CN101395961A Plant for production of paper-made part for speaker, paper-made part for speaker produced thereby, and speaker utilizing the same |
| 03/25/2009 | CN101395956A Sound sponge for loudspeakers |
| 03/25/2009 | CN101394684A Composite diaphragm and its making method |
| 03/25/2009 | CN101394683A Diaphragm for transducer |
| 03/25/2009 | CN101394682A Water-proof cone for loudspeaker and manufacturing method thereof |
| 03/18/2009 | EP2036394A1 Speaker |
| 03/18/2009 | CN201210732Y Waterproof loudspeaker and waterproof electronic product using the loudspeaker |
| 03/17/2009 | US7505603 Dynamic micro speaker with dual suspension |
| 03/17/2009 | CA2350900C Lay-in ceiling speaker |
| 03/12/2009 | US20090065291 Electropneumatic horn system |
| 03/12/2009 | DE112008000003T5 Lautsprecher Speaker |
| 03/11/2009 | EP2033482A1 Speaker |
| 03/10/2009 | US7502486 Plane speaker having coil plate guide device |
| 03/10/2009 | US7502485 Loudspeaker, loudspeaker module, and electronic equipment using the loudspeaker module |
| 03/05/2009 | WO2009028121A1 Vibration plate and speaker |
| 03/05/2009 | WO2009026994A1 Broadband exciter |