| Patents for H04R 1 - Details of transducers (42,173) |
|---|
| 02/25/1999 | CA2297774A1 Telephone with a receiver arousing bone-conduction and air-conduction hearing |
| 02/24/1999 | EP0898441A2 Method for inputting acoustic signals into an electric apparatus ans electric apparatus |
| 02/24/1999 | CN2309022Y Loudspeaker box eliminating resonance and standing wave |
| 02/24/1999 | CN2309021Y Earphone automatic retraction jack |
| 02/23/1999 | US5875255 High power electroacoustic speaker system having wide band frequency response |
| 02/23/1999 | US5875252 Loudspeaker for high frequencies |
| 02/23/1999 | US5875251 Mechanism of vibration type microphone |
| 02/23/1999 | US5874695 Speaker assembly |
| 02/18/1999 | WO1999008479A1 Sound radiating devices/systems |
| 02/18/1999 | WO1999008478A1 Device including a built-in electroacoustic transducer for optimum speech reproduction |
| 02/18/1999 | WO1999008477A1 Ear-mounted headset device |
| 02/18/1999 | WO1999007437A1 Piezoelectric film transducer |
| 02/18/1999 | WO1998052381A3 Panel-form loudspeakers |
| 02/18/1999 | WO1998026405A3 Directed acoustic stick radiator |
| 02/18/1999 | DE19735082A1 Low frequency loudspeaker for use under motor vehicle seat |
| 02/18/1999 | DE19734696A1 Hi-fi stand with vibration damping mountings |
| 02/18/1999 | CA2295724A1 Sound radiating devices/systems |
| 02/17/1999 | EP0896769A1 Acoustic horn for use in cellular flip phones |
| 02/17/1999 | EP0847567B1 A vending machine |
| 02/17/1999 | EP0791279B1 Loudspeaker system with controlled directional sensitivity |
| 02/17/1999 | CN1208316A Environment-protecting and power-saving sound box |
| 02/16/1999 | US5872340 Adjustable isolation mounting system for center channel loudspeakers |
| 02/16/1999 | US5872339 High performance loudspeaker system |
| 02/11/1999 | WO1999006990A2 Compact horn speaker |
| 02/10/1999 | EP0896497A2 Sound reproduction system |
| 02/10/1999 | EP0895702A1 Audio system that can be mounted on the body of a user |
| 02/10/1999 | EP0895642A1 Variable capacitor |
| 02/10/1999 | CN2307416Y Tiepin type miniature microphone |
| 02/10/1999 | CN2307415Y Microphone mounting |
| 02/10/1999 | CN1207643A Ear hung rest for earphone adapted to be supported entirely by ear |
| 02/10/1999 | CN1042087C Loudspeaker system |
| 02/09/1999 | US5870485 Computer visual display monitor with integral stereo speaker and directional microphone and method for construction |
| 02/09/1999 | US5868475 Audiovisual equipment and casing thereof and method of producing the same |
| 02/04/1999 | WO1999005887A1 Loudspeaker system having a bass-reflex port |
| 02/04/1999 | WO1999005886A1 Hybrid loudspeaker system |
| 02/04/1999 | WO1999005885A1 Loudspeaker system |
| 02/04/1999 | DE19733373A1 Earphone headset with decentralised transducer system |
| 02/04/1999 | DE19728329A1 Lautsprecheranordnung Speaker assembly |
| 02/03/1999 | EP0895439A2 Sound collector |
| 02/03/1999 | CN2306622Y 麦克风连接器 Microphone connector |
| 02/03/1999 | CN1207007A Magnetic sound absorbing loudspeaker housing with metal decorative net plastic front board |
| 02/02/1999 | US5867583 Twist-lock-mountable versatile loudspeaker mount |
| 02/02/1999 | US5867582 Headphone |
| 02/02/1999 | US5866858 Loudspeaker method and apparatus |
| 02/02/1999 | CA2139202C Noise removing apparatus using a microphone |
| 01/28/1999 | WO1999004599A1 Integrated tri-flare wave guide and trim ring |
| 01/28/1999 | WO1999004597A2 Pistonic motion, large excursion passive radiator |
| 01/28/1999 | WO1999003375A1 Passive radiator cooled electronics/heat sink housing for a powered speaker |
| 01/28/1999 | WO1998048526A3 Time-multiplexed short-range magnetic communications |
| 01/27/1999 | EP0893935A2 Housing for electroacoustic transducer |
| 01/27/1999 | CN2305822Y Super thin type sound wall |
| 01/27/1999 | CN1206322A Sound box with color pattern and the method of producing color pattern on sound box cloth |
| 01/27/1999 | CN1041886C Speaker component and speaker using the same |
| 01/26/1999 | US5864628 Acoustic attention system for use with a hearing aid |
| 01/26/1999 | US5864100 For use in a motor vehicle |
| 01/26/1999 | US5863015 Microphone stand elevating device |
| 01/26/1999 | CA2011619C Speaker cover grille installation |
| 01/21/1999 | WO1999003303A1 Method and apparatus for formatting the digital audio signal for use of the sound reproduction |
| 01/21/1999 | CA2295869A1 Method and apparatus for formatting the digital audio signal for use of the sound reproduction |
| 01/20/1999 | CN2305026Y Multifunctional audio and vedeo controlling box |
| 01/19/1999 | US5862240 Microphone device |
| 01/19/1999 | US5862237 Speaker apparatus |
| 01/14/1999 | WO1999002011A1 Loudspeaker arrangement |
| 01/14/1999 | WO1999002010A1 Enclosure for a microphone |
| 01/14/1999 | WO1999001849A1 Vibrational transducer |
| 01/14/1999 | WO1999001234A2 Ultrasonic transducer |
| 01/14/1999 | DE19750667A1 Loudspeaker and amplifier-box protective cover e.g. for use during transportation |
| 01/14/1999 | CA2294587A1 Vibrational transducer |
| 01/13/1999 | EP0891117A2 Loudspeaker and sound reproduction system employing such a loudspeaker |
| 01/13/1999 | EP0890293A1 Sampled chamber transducer with enhanced low frequency response |
| 01/13/1999 | EP0890291A1 Process and arrangement for converting an acoustic signal to an electrical signal |
| 01/13/1999 | CN2304216Y Microphone support |
| 01/13/1999 | CN1205160A Flexible interlink for hydrophone array |
| 01/12/1999 | CA2143227C Noise-canceling differential microphone assembly |
| 01/12/1999 | CA2143226C Single diaphragm second order differential microphone assembly |
| 01/07/1999 | WO1999001015A1 Speaker enclosure |
| 01/07/1999 | DE19732184C1 Loudspeaker box with protection against moisture |
| 01/07/1999 | DE19727877A1 Ultraschallwandler Ultrasonic transducer |
| 01/07/1999 | DE19727130A1 Horn loudspeaker holder |
| 01/06/1999 | CN2303419Y Sound persuasion pipe for high tone quality horn |
| 01/06/1999 | CN2303418Y Low distortion and low noise mouth-piece |
| 01/06/1999 | CN2303417Y Switching components for horn |
| 01/06/1999 | CN1204048A Unbalanced fiber optic michelson interferometer as optical pick-off |
| 01/06/1999 | CN1041587C Production of vibrating object used in electric acoustic exchanger |
| 01/05/1999 | US5857027 Loudspeaker |
| 12/30/1998 | WO1998059524A1 Audio system having ornamental light display |
| 12/30/1998 | EP0888031A1 Miniature microphone component |
| 12/30/1998 | EP0888030A2 Hook shaped locking means |
| 12/30/1998 | EP0886990A1 Process and device for transmitting sound |
| 12/30/1998 | EP0886948A1 Michrophone in a speech communicator |
| 12/30/1998 | EP0756740B1 Process and device for tracing an ultrasound field |
| 12/30/1998 | EP0698334B1 Stereophonic reproduction method and apparatus |
| 12/30/1998 | CN2302624Y Slabstone loudspeaker box |
| 12/30/1998 | CN2302623Y Baffle whole-absorption loudspeaker box |
| 12/30/1998 | CN2302622Y Loudspeaker box |
| 12/30/1998 | CN1203508A Loudspeaker box |
| 12/30/1998 | CN1041487C Loadspeaker structure |
| 12/29/1998 | US5854848 Noise control device |
| 12/29/1998 | US5854846 Wafer fabricated electroacoustic transducer |
| 12/29/1998 | US5854435 Natural resonant speaker |