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)
11/1982
11/16/1982US4359133 Resilient support for electronic component
11/11/1982WO1982003961A1 Port devices for bass-reflex speaker enclosures
11/09/1982US4358835 Method and device for matching the reflector of an acoustic echo ranging system
11/09/1982US4358642 Electro-magnetic type electric acoustic transducer
11/02/1982US4357490 High fidelity loudspeaker system for aurally simulating wide frequency range point source of sound
11/02/1982US4356882 Device for enlarging the effective volume of a loudspeaker enclosure
11/02/1982US4356881 Floor speaker
10/1982
10/20/1982EP0062755A1 Electroacoustic transducer provided with signal and/or control means
10/19/1982US4355213 Microphone assembly
10/13/1982EP0062600A1 Electrodynamic loudspeaker for low and medium sound frequencies
10/13/1982EP0062401A1 A loudspeaker cabinet
10/13/1982EP0062164A1 Electroacoustic transducer with a tube-like casing
10/13/1982EP0062163A1 Microtelephone set to be carried by a safety helmet
10/12/1982US4354132 Ultrasonic transducer with a plastic piezoelectric receiving layer and a non plastic transmitting layer
10/12/1982US4354067 Audio-band electromechanical vibration converter
10/12/1982US4354059 Variable-directivity microphone device
10/12/1982CA1133286A1 Steel having excellent vibration attenuation performance and method of manufacturing the same
10/06/1982EP0061812A1 Disposition of acoustic transducers and use of this disposition in a hands-free telephone apparatus
09/1982
09/28/1982US4352176 Electromagnetic pickup cartridge
09/21/1982US4350847 Subwoofer system using a passive radiator
09/21/1982US4350724 Employing a passive gas-liquid interactive volume
09/14/1982US4349084 Controlled ambience speaker system
09/14/1982US4349082 Acoustical damping element and method of forming same
09/14/1982US4349081 Method for retaining a hearing aid in place and hearing aid harness
09/14/1982US4348904 Acoustic impedance matching device
09/07/1982US4348750 Energy control device
09/07/1982US4348552 Direct/reflecting speaker system and triangular shaped enclosure
09/07/1982US4348549 Loudspeaker system
09/07/1982US4347911 Acoustic headset
09/07/1982CA1131132A2 Diaphragm for a loudspeaker
09/01/1982EP0059155A1 Loudspeaker, in particular dome loudspeaker
08/1982
08/31/1982CA1130911A1 Loudspeaker
08/19/1982WO1982002812A1 A bass-reflex loudspeaker system
08/17/1982US4345322 Pickup cartridge for reproducing signals recorded on a 45-45 stereophonic record disk
08/17/1982US4345299 Capacitive pressure transducer assembly with improved output lead design
08/17/1982US4345118 Quartz tuning fork electro-acoustic transducer
08/17/1982US4344504 Directional loudspeaker
08/11/1982EP0057193A1 Apparatus and method for enhancing the frequency response of a loudspeaker
08/10/1982US4344167 Pickup device
08/10/1982CA1129269A1 Structural material for acoustic machines and instruments
08/03/1982CA1129069A1 Electroacoustic transducer filter assembly
07/1982
07/28/1982EP0056479A1 Artificial head
07/27/1982US4342107 Pick-up needle
07/27/1982US4341930 Electrodynamic loudspeaker
07/27/1982CA1128644A1 Capacitor microphone
07/27/1982CA1128423A1 Boron cantilever and method of making the same
07/20/1982US4340944 Ultrasonic echographic probe having an acoustic lens and an echograph incorporating said probe
07/20/1982US4340787 Electroacoustic transducer
07/20/1982US4340778 Speaker distortion compensator
07/06/1982US4338489 Headphone construction
07/06/1982US4337778 Blood pressure measuring apparatus
06/1982
06/30/1982EP0054945A1 Speaker for automotive vehicle audio system
06/29/1982US4337383 Earphone jack for tape recorders
06/29/1982US4337380 Structure for mounting speaker
06/29/1982US4336861 Speaker system
06/29/1982CA1126662A1 Low frequency folded exponential horn loudspeaker apparatus with bifurcated sound path
06/22/1982CA1126388A1 Directional microphone
06/22/1982CA1126167A1 Fluidic analog to digital converter
06/16/1982EP0053947A1 Ultrasonic transducer
06/15/1982US4335281 Post-auricle contoured headset for two-way voice communication
06/15/1982US4334593 Sound reproduction system
06/08/1982US4334315 Wireless transmitting and receiving systems including ear microphones
06/08/1982US4334211 Speaker grille for streamlined light bar mounted on vehicle roof
06/01/1982US4332986 Speaker system employing passive radiator
05/1982
05/25/1982US4331841 Grille covered speaker mounting assembly for automobile decks and the like
05/25/1982US4331840 Electret transducer with tapered acoustic chamber
05/18/1982US4330878 Sound producing device for watches
05/18/1982US4330691 Integral ceiling tile-loudspeaker system
05/18/1982US4329876 Method and apparatus for acoustic scanning using bulk wave scattering of bulk waves by an acoustic grating
05/13/1982WO1982001636A1 Electroacoustic converter
05/11/1982US4329547 Dual section electret microphone
05/05/1982EP0050649A1 Speaker with low mass driver
05/04/1982US4328400 Coaxial multi-way planar diaphragm type loudspeaker system
05/04/1982CA1123089A1 Method for mounting acoustic waveguide rod
04/1982
04/28/1982EP0050314A2 Vibratable member, in particular a resonant body for sound-producing devices
04/27/1982US4326599 Speaker bezel/retainer
04/27/1982US4326418 Acoustic impedance matching device
04/21/1982EP0050067A1 Audio system
04/20/1982US4326285 Stereo phonograph cartridge
04/20/1982US4326275 Directional transducer
04/20/1982US4326274 Transmission system of aerial ultrasonic pulse and ultrasonic transmitter and receiver used in the system
04/20/1982US4326099 Low frequency cabinet, in particular for a triphonic audio network
04/20/1982US4325456 Acoustical transformer for compression-type loudspeaker with an annular diaphragm
04/20/1982US4325455 Loudspeaker grille
04/20/1982US4325454 Speaker system which inverts and redirects the speaker backwave
04/20/1982US4325258 Conical transducer ultrasonic scanning
04/13/1982US4325143 Microphone holder attachment and switch control therefor
04/13/1982US4324313 Exponential horn for use in horn-type loudspeakers
04/13/1982US4324312 Diaphragm suspension construction
04/13/1982US4324142 Circuit for processing the signals received by a mosaic of ultrasonic transducers in B-mode echography
04/07/1982EP0048900A1 Process for the production of focussing piezoelectric resonators
04/06/1982US4323999 Automatic transmission or recording or transmission and reception control system
04/06/1982US4323138 Automotive loud speaker enclosure
04/06/1982CA1121276A1 Loudspeaker cabinets
03/1982
03/31/1982EP0048434A1 Electro acoustic planar transducer
03/30/1982US4322585 Personal electronic listening system with an air and bone transducer mounted on the clothing collar
03/30/1982US4322578 Method and devices for the omnidirectional radiation of sound waves
03/30/1982CA1121042A1 Directional transducers for sonic logging
03/23/1982US4321432 Electrostatic microphone
03/23/1982CA1120577A1 Seismic transducer construction
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