Patents for H04R 1 - Details of transducers (42,173)
08/1988
08/02/1988US4760984 Quick disconnect assembly for microphone
08/02/1988CA1240032A1 Electret microphone
08/02/1988CA1240029A1 Hearing aids, signal supplying apparatus, systems for compensating hearing deficiencies, and methods
07/1988
07/26/1988US4760601 Single speaker, double tuned labyrinth type enclosure
07/25/1988EP0169854A4 Suspension for electro-acoustical transducers.
07/20/1988EP0275195A2 Acoustic assembly
07/12/1988US4757548 For transmitting sonic and physical vibrational impulses
07/12/1988US4757546 Narrow directional microphone
07/12/1988US4757544 Multi-directional speaker system
07/12/1988US4756454 Stereophonic audio equipment carrier
07/12/1988US4756382 Loudspeaker having enhanced response at bass frequencies
07/12/1988US4756308 Protective breathing mask having a speaking diaphragm for close communication and an electroacoustic transducer system for indirect speech transmission from inside the mask
07/07/1988DE3642055A1 Device for directly converting sound into digital information, digital microphone
07/06/1988EP0273096A2 Passive sound transmission system for the in-phase reproduction to the front of the sound pressure generated from the rear side of a loudspeaker's membrane
07/06/1988CN87107784A Electro-acoustic transducers
07/05/1988US4755708 Hydrophone
07/05/1988US4754901 Stereophonic audio equipment carrier
07/05/1988US4754852 Simulated rock speaker assembly
06/1988
06/30/1988WO1988004873A1 A pick-up with an exchangeable front part
06/28/1988US4753408 Adjustable attitude speaker stand
06/28/1988US4753317 Trapezoidal loudspeaker enclosure
06/21/1988US4752962 Loudspeaker unit with means for releasably fastening loudspeaker chassis is to its frame
06/16/1988WO1988004514A1 Loudspeaker installation
06/16/1988WO1988004513A1 Method for equalizing the amplitude/frequency response of an electro-acoustic transducer assembly, corresponding transducer assembly
06/15/1988EP0271407A1 Protecting device for an equipment element plunged into a surrounding medium and sensitive to electric, magnetic and/or electromagnetic influences within this medium
06/15/1988EP0270981A2 Loudspeaker
06/15/1988EP0270857A2 Sound-reproducing device applied to the head of a person
06/15/1988CN87203406U Ultraviolet sterilized device for telephone microphone
06/15/1988CN87107923A Transducer mount
06/14/1988US4751731 Telephone handset disinfecting and/or deodorizing device
06/14/1988US4751612 Construction for attaching a component to a substrate
06/14/1988US4751420 Ultrasonic test head
06/14/1988US4751419 Piezoelectric oscillation assembly including several individual piezoelectric oscillation devices having a common oscillation plate member
06/14/1988US4751014 Underwater transducers
06/14/1988US4750585 Loudspeaker enclosure for suppressing unwanted audio waves
06/09/1988DE3739369A1 Transducer mounting with a first part and a second part which are detachably connected to one another
06/08/1988EP0270394A1 Method of dividing the acoustical reproduction of modulated signals in transducers mounted in parallel, and set of transducers therefor
06/07/1988US4750208 Audio-band electromechanical vibration converter
06/02/1988WO1988004125A1 Unidirectional enhancer for microphones
06/01/1988EP0269549A2 Adjustable tension support band for headset
06/01/1988EP0269323A1 Sealed chambers
06/01/1988EP0268712A1 A stereo speaker system
05/1988
05/31/1988CA1237303A1 Ultrasonic horn with sidelobe suppressing centerpiece
05/26/1988DE3639499A1 Device for microphones for reducing the acoustic feedback and suppressing interfering environmental noises
05/25/1988CN87203244U Hygienic mouthpiece for telephone
05/24/1988US4747145 Earcup suspension for headphone
05/19/1988WO1988003744A1 Sound reinforcement enclosure employing cone loudspeaker with annular central loading member and coaxially mounted compression driver
05/19/1988WO1988003739A1 A composite sonar transducer for operation as a low frequency underwater acoustic source
05/18/1988EP0267650A2 Loudspeaker apparatus and method
05/18/1988CN85100713B Circular cone piezoelectric ear-phone
05/17/1988US4744398 Protective cover for receiver-speaker
05/10/1988US4743392 Lead-titanium-oxygen, underwater transducer
05/10/1988US4742887 Open-air type earphone
05/10/1988CA1236561A1 Headphone
05/04/1988EP0265679A2 Flexural disk transducer
05/03/1988US4742548 Unidirectional second order gradient microphone
04/1988
04/27/1988EP0264785A2 Audio communications module for an office chair
04/26/1988US4741040 Bass-reflex loudspeaker system
04/26/1988CA1235791A1 Suspension for electro-acoustical transducers
04/21/1988DE3634269A1 Loudspeaker unit
04/14/1988DE3634658A1 Arrangement for protection against voltage flash-over in telephony handsets
04/14/1988DE3634620A1 Arrangement for protecting against voltage flash-over in telephony handsets
04/14/1988DE3634619A1 Arrangement for protecting against voltage flash-over in telephony handsets
04/13/1988EP0263748A1 Electro-acoustic transducer
04/13/1988EP0263120A1 Flat housing for loudspeakers
04/06/1988EP0262921A2 A set of bactericidal shields for use on telephone handsets
04/06/1988EP0262729A1 Loudspeaker having a two-part diaphragm for use as a car loudspeaker
04/06/1988EP0262145A1 Piezoelectric polymeric film balloon speaker
04/05/1988US4736435 Ear piece transducer
03/1988
03/31/1988DE3723275A1 Ohrmikrofon Ear microphone
03/31/1988DE3632125A1 Device for arranging headphones
03/29/1988US4734611 Ultrasonic sensor
03/29/1988US4733749 High output loudspeaker for low frequency reproduction
03/29/1988US4733748 Loudspeaker mounting device for car radio
03/23/1988EP0260705A2 Speaker
03/23/1988EP0260313A1 Adaptor for coupling plural compression drivers to a common horn.
03/22/1988US4732040 Electrodynamically producing ultrasonic waves
03/16/1988EP0260173A1 Piezo-electric hydrophones with improved sensitivity
03/16/1988EP0259338A1 Sleep inducing device
03/15/1988US4730694 Electro-mechanical reproduction of sound
03/15/1988US4730693 Multichannel loudspeaker enclosure
03/09/1988EP0259199A1 Electrical connector for a loudspeakerdriver
03/09/1988EP0258912A1 Device for converting an electrical signal into an acoustic signal comprising an electrostatic transducer unit
03/01/1988US4728934 Tactile stimulation device for hearing-impaired individuals
03/01/1988US4728143 Door for vehicle which incorporates loudspeaker
02/1988
02/24/1988EP0256688A2 Omniphonic microphone and loudspeaker system
02/24/1988EP0256593A2 Loudspeaker system and loudspeaker for converting an n-bit digitalized electric signal into an acoustic signal
02/23/1988US4727599 Waterproof radio headband
02/23/1988US4727587 Acoustical transducer mounting arrangement
02/23/1988US4727586 High fidelity speaker system and assembly
02/23/1988US4727585 Adjustable tension support band for headset
02/23/1988US4727583 Telephone transducer with improved frequency response
02/23/1988US4726444 Rigid, porous lenses or prisms; ceramics and/or metals; foams, fibers or particles
02/16/1988US4726068 Boom mounted microphone and connector
02/16/1988US4725989 Method controlling the focusing of an ultrasonic field and apparatus for performing said method
02/16/1988CA1232842A1 Tweeter bidirectional radiating
02/09/1988US4723657 Microphone carrying case
02/09/1988CA1232672A1 Broadband radial vibrator transducer with multiple resonant frequencies
02/04/1988DE3625891A1 Audible sound transmission system
02/03/1988EP0255509A2 Loudspeaker front and method of producing the same