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)
10/1985
10/23/1985EP0158978A2 Mounting of transducers on a baffle, particularly for loudspeakers, preferentially for loudspeaker boxes
10/22/1985US4549107 Ultrasonic beam focusing device with a concave surface
10/22/1985US4548082 Hearing aids, signal supplying apparatus, systems for compensating hearing deficiencies, and methods
10/16/1985EP0158230A1 Piezoelectric-acoustic transducer for electroacoustic units with constructional features for assembling
10/15/1985US4547870 Velocity hydrophone
10/15/1985US4546950 Shock absorbing support for microphones
10/15/1985US4546850 Speaker and grille installation clip mounting
10/15/1985CA1195420A1 Ultrasonic transducer for use in a vibratory environment
10/15/1985CA1195419A1 Transducer supporting and contacting means
10/15/1985CA1195396A1 Hydrophone cable comprising loosenable braided members
10/08/1985US4546459 Method and apparatus for a phased array transducer
10/08/1985US4546215 Detachable earmuffs for headsets
09/1985
09/25/1985EP0155266A1 Loudspeaker structure.
09/24/1985US4542803 Detachable inflight headset for civil aircraft
09/18/1985EP0154706A2 Piezoelectric air-ultrasound transducer with broadband characteristics
09/17/1985US4542494 Arrangement for fastening a phonograph stylus holder to the tone arm
09/17/1985US4542264 Lead-frame for an electric microphone
09/17/1985US4541188 Reflective audio assembly and picture
09/10/1985US4540113 Ultrasonic working apparatus
09/10/1985US4539983 Respirator speech transmitter
09/10/1985CA1193357A1 Loudspeaker having apertured acoustic impedance frontal loading element
09/04/1985EP0153515A1 Audio light chandelier
09/03/1985US4539700 Personal portable audio device
09/03/1985US4539441 Hearing-aid with integrated circuit electronics
09/03/1985CA1192844A1 Tunable stethoscope
08/1985
08/28/1985EP0152926A2 Electrodynamic loudspeaker with omni-directional sound radiations
08/27/1985US4538250 Construction and method for elongated towed underwater sonar
08/27/1985US4538034 Earphone assembly
08/27/1985US4537276 Mask/microphone system for voice actuated control
08/27/1985US4536995 Corner panel assembly
08/20/1985US4536861 Optical fibre hydrophone
08/13/1985US4534221 Ultrasonic diagnostic imaging systems for varying depths of field
08/07/1985EP0150744A2 Loudspeaker unit
08/06/1985US4534022 Phonograph pick-up with improved shield grounding
08/06/1985US4533795 Integrated electroacoustic transducer
07/1985
07/24/1985EP0148893A1 Integrated electroacoustic transducer.
07/23/1985US4531229 Method and apparatus for improving binaural hearing
07/23/1985US4531025 Loudspeaker with commutated coil drive
07/23/1985US4530603 Stabilized fiber optic sensor
07/23/1985US4530386 Cushion tire
07/18/1985WO1985003186A1 Loudspeaker system with boundary layer control
07/18/1985WO1985003185A1 Suspension for electro-acoustical transducers
07/16/1985US4530077 Efficient low cost transducer system
07/16/1985US4529059 Vibrating diaphragm type audible device with acoustically improved grille and method
07/16/1985US4529058 Earphones
07/16/1985US4528853 Ultrasonic sensor
07/10/1985EP0147992A2 Multi-driver loudspeaker
07/10/1985EP0147940A1 An ear acoustical hearing aid
07/09/1985US4528620 Audio light chandelier
07/09/1985US4528426 Directional microphone assembly
07/09/1985US4527657 Tapered tube impedance matching underwater voice communicator with bubble silencer
07/09/1985CA1190314A1 Loudspeaker having acoustic impedance frontal loading element
07/03/1985EP0147373A1 Method of producing electroacoustic converters, preferably microphones, and converters produced according to the method
07/02/1985US4527019 Microphone hanger
06/1985
06/26/1985EP0039740B1 Loud-speaker
06/25/1985US4525872 Amplifier
06/25/1985US4525817 Acoustic resistor in an electroacoustic transducer
06/25/1985US4525604 Horn loudspeaker with convex diaphragm
06/25/1985US4524846 Loudspeaker system
06/25/1985US4524845 Low frequency speaker enclosure
06/20/1985WO1985002747A1 Electroacoustic sound transmitter
06/19/1985EP0144395A1 Low cost ultrasonic transducer apparatus
06/11/1985US4522283 Noise measurement
06/06/1985WO1985002513A1 Sound reproduction system
06/05/1985EP0143383A2 Electro-acoustic transducers
06/04/1985US4521906 Speaker systems for producing balanced stereo images at multiple locations
05/1985
05/28/1985US4520238 Pickup device for picking up vibration transmitted through bones
05/28/1985US4520237 Electrodynamic speaker
05/22/1985EP0142318A2 Ultrasonic probe
05/22/1985EP0142178A1 Ultrasonic transducer
05/22/1985EP0141813A1 Loudspeaker
05/21/1985US4519063 Phono pickup cartridge
05/21/1985US4519062 Signal pickup device
05/21/1985US4518889 Piezoelectric apodized ultrasound transducers
05/21/1985US4518555 Manufacturing an active suspension electromechanical transducer
05/15/1985EP0141447A2 Loudspeaker system and loudspeaker for converting an n-bit digitized electric signal into an acoustic signal
05/14/1985US4517417 Communication system for a motor vehicle
05/14/1985US4516428 Acceleration vibration detector
05/08/1985EP0140465A2 Defined-coverage loudspeaker horn
05/07/1985US4515997 Direct digital loudspeaker
04/1985
04/30/1985US4514621 Firing range
04/30/1985US4514599 Speaker for automotive vehicle audio system having a vehicle panel serving as sound-amplifying medium
04/30/1985US4514598 Microphone shock-mounting apparatus
04/23/1985US4513197 Heated seal of resiliently compressible foam for matching the edge of a hollow portion of an article to an irregular surface
04/23/1985US4512434 Aerodynamic bass-reflex enclosure
04/17/1985EP0137550A1 Loudspeaker system and loudspeaker for converting an n-bit digitized electric signal into an acoustic signal
04/17/1985EP0137549A1 Hybrid loudspeaker system, at option with one or more correction circuits
04/16/1985US4511768 Mounting arrangement for altering a microphone's frequency response
04/10/1985EP0136318A1 Constant pressure device
04/09/1985US4509615 Multi-chamber enclosure for loudspeakers
04/03/1985EP0136270A1 Electret microphone
04/02/1985US4509193 Miniature acoustical transducer with filter/regulator power supply circuit
04/02/1985US4509192 Speaker enclosure
04/02/1985US4509159 Aluminum-aluminum oxide stylus arm
04/02/1985US4509153 Resolution transducers, systems and methods for the transmission and/or reception of waves propagated by vibration
03/1985
03/26/1985US4507800 Enclosed magnet loudspeaker
03/26/1985US4506759 Loudspeaker enclosure arrangement for voice communication terminals
03/20/1985EP0134751A1 Microphone with adjustable aperture
03/14/1985WO1985001176A1 Loudspeaker structure
03/12/1985US4504703 Electro-acoustic transducer
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