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)
06/1999
06/16/1999CN2324735Y Adjustable angle sounder resonator
06/16/1999CN2324721Y Three-dimensional space sound field television
06/15/1999US5913178 Microphone in a speech communicator
06/15/1999US5912978 Loudspeaker
06/15/1999US5911314 Headset ear seal
06/15/1999CA2157652C Method of operating an ultrasonic piezoelectric transducer and circuit arrangement for performing the method
06/10/1999DE19752836A1 Composite material with a relief surface, use of material and manufacturing process
06/09/1999EP0921706A2 Horn loudspeakers and loudspeaker systems
06/09/1999EP0920746A2 Time-multiplexed short-range magnetic communications
06/09/1999CN2323540Y Stone box body for loudspeaker box
06/09/1999CN2323539Y Microphone joint structure
06/09/1999CN2323538Y Synergism type loudspeaker box foot stool
06/09/1999CN2323537Y Loudspeaker box capable of perfuming
06/09/1999CN2323536Y Loudspeaker diffuser ejection moulding mould
06/09/1999CN1219316A Ear Microphone with enhanced sensitivity
06/09/1999CN1219092A Universal loadspeaker system
06/08/1999US5910997 Digitally programmable hearing aid communicable with external apparatus through acoustic signal
06/03/1999WO1999014980A3 A loudspeaker with lead wires extending through the magnetic assembly and integrated with an amplifier
06/02/1999EP0919109A1 Recording and play-back two-channel system for providing a holophonic reproduction of sounds
06/02/1999EP0919108A1 Piezoelectric film transducer for use in an implantable hearing system
06/02/1999EP0919107A1 High back emf, high pressure subwoofer
06/02/1999EP0919106A1 Microphone holder
06/02/1999DE3441271C1 Detecting pressure as electrical signal from material, pref. polyvinylidene fluoride
06/02/1999CN2322342Y Small ball-shape ceramic loudspeaker casing
06/02/1999CN2322341Y Loudspeaker casing shell
06/02/1999CN2322340Y Sanitary microphone cover
06/02/1999CN2322339Y Loudspeaker casing
06/02/1999CN2322338Y Small ball-shape loudspeaker casing
06/02/1999CN1218603A Process and device for transmitting sound
06/01/1999US5909498 Transducer device for use with communication apparatus
06/01/1999US5909496 Speaker apparatus
05/1999
05/27/1999WO1999026450A1 Speaker system
05/26/1999CN2321187Y Microphone sound head
05/26/1999CN1217865A Photoelectric transducer including enclosuring element for enclosuring rear volume of transducer
05/26/1999CN1217863A Photoelectric transducer including elastic contact formed with at least one bended part
05/26/1999CN1217846A Microphone in speech communicator
05/25/1999US5907133 Device for electroacoostic diffusion, with diaphragms, spiders and horns of balsa wood or mixtures thereof
05/20/1999WO1999025152A2 Interactive devices and methods
05/20/1999DE19849401A1 Circularly radiating horn for loudspeaker system
05/19/1999EP0917396A2 Method and arrangement for attenuating mechanical resonance in a loudspeaker
05/19/1999EP0917395A2 Audio system
05/19/1999CN2319985Y Shock-proof seat of acoustics
05/19/1999CN2319984Y Granite loudspeaker box
05/19/1999CN2319983Y 360 degree omnidirectional unit independent reflective loudspeaker box
05/19/1999CN1216889A Speaker system
05/18/1999US5905804 Pad structure for a speaker cabinet
05/18/1999US5905803 Flush-porting method and device for reduction of wind-induced noise in a microphone
05/18/1999US5905693 Isolation mount for an acoustic device
05/14/1999WO1999023855A1 Large scale sound reproduction system having cross-cabinet horizontal array of horn elements
05/14/1999WO1999023804A1 Method for transmitting acoustic signals from a memory or chip card, and card for implementing said method
05/14/1999WO1999022833A1 Denta-mandibular sound-transmitting system
05/14/1999CA2308038A1 Method for transmitting acoustic signals from a memory or chip card, and card for implementing said method
05/12/1999EP0915636A2 Radially expanding multiple flat surfaced waveguide device
05/12/1999CN2318781Y Stone loudspeaker box
05/12/1999CN2318780Y Inverted type loudspeaker box with combined acoustic pipe
05/12/1999CN2318779Y Loudspeaker box
05/11/1999US5903656 Monitor has tubular loudspeaker reducing CRT's mask vibrations
05/11/1999US5903644 Monaural communication device
05/11/1999US5903076 Vibration actuator for pager
05/11/1999US5903068 Electroacoustic transducer
05/11/1999US5902167 Sound-transmitting amusement device and method
05/11/1999US5902023 Speaker cabinet and monitor housing mounting arrangement
05/10/1999CA2253088A1 Radially expanding multiple flat surfaced waveguide device
05/06/1999DE19843714A1 Loudspeaker
05/05/1999CN2317591Y Extended device with rotating horn loudspeaker box for notebook computer
05/05/1999CN1215970A Earphone system with operability improved and terminal equipment system with earphone system
05/04/1999US5901232 Sound system that determines the position of an external sound source and points a directional microphone/speaker towards it
05/04/1999US5900593 Loudspeaker system
05/04/1999US5899847 Implantable middle-ear hearing assist system using piezoelectric transducer film
05/04/1999US5898945 Ear muff
04/1999
04/29/1999WO1999021397A1 Resonant mode panel-loudspeakers
04/29/1999CA2303789A1 Resonant mode panel-loudspeakers
04/28/1999EP0911004A1 Enhanced band earplug
04/28/1999EP0847674B1 Musical instruments incorporating loudspeakers
04/28/1999EP0847664B1 Loudspeakers comprising panel-form acoustic radiating elements
04/28/1999CN2316787Y Sounder rack
04/28/1999CN2316786Y Microphone receiver with improved structure
04/28/1999CN2316785Y Combined structure net head for microphone
04/28/1999CN2316774Y Demagnetizing sticking article for portable telephone
04/28/1999CN1215316A Ear tips having a plurality of ear contacting surfaces
04/27/1999US5898788 Loudspeaker system
04/27/1999US5898138 Loudspeaker having horn loaded driver and vent
04/27/1999US5898137 Speaker system for television set
04/22/1999WO1999001234A3 Ultrasonic transducer
04/22/1999DE19836790C1 Loudspeaker housing
04/21/1999EP0910226A2 Television set comprising loudspeakers and a decoder for surround-sound audio signals
04/21/1999EP0910225A2 Microphone arrangement for helmet,and helmet with such an arrangement
04/21/1999EP0847678B1 Panel-form microphones
04/21/1999EP0847665B1 Panel-form loudspeakers
04/21/1999CN2315746Y New speaker box with console phase inverting box structure
04/21/1999CN2315745Y Earphone of household cinema
04/21/1999CN2315744Y Base of microphone net
04/21/1999CN1214605A Speaker
04/20/1999US5896460 Speaker
04/20/1999US5895896 Fluid coupled subwoofer acoustic enclosure system with port chamber
04/20/1999US5894810 Personal watercraft having a hood assembly with a base piece for mounting a stereo system
04/15/1999WO1999018755A1 An improved low frequency transducer enclosure
04/15/1999DE19745338A1 Installation frame with spring suspension
04/14/1999EP0909111A2 Omni-directional speaker system
04/14/1999EP0909110A2 Method and arrangement for improving leak tolerance of an earpiece
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