Patents for H04R 3 - Circuits for transducers (18,190)
06/1986
06/03/1986US4593405 Loudspeaker system with combination crossover and equalizer
05/1986
05/28/1986EP0182764A2 Electromechanical film and procedure for manufacturing same
05/27/1986US4592088 Speaker apparatus
05/21/1986EP0181608A1 Reference load amplifier correction systemand method
05/13/1986US4589137 Electronic noise-reducing system
05/13/1986US4589136 Circuit for suppressing amplitude peaks caused by stop consonants in an electroacoustic transmission system
05/13/1986US4589135 Zero phase shift filtering
05/13/1986US4589133 Attenuation of sound waves
05/06/1986CA1204062A1 Console priority control
04/1986
04/29/1986US4586195 Microphone range finder
04/15/1986US4583245 Speaker system protection circuit
04/08/1986US4581758 Acoustic direction identification system
04/02/1986EP0176459A1 Ear phone, telephone handset and head phones for correcting individual hearing deficiencies
03/1986
03/25/1986CA1202363A1 Temperature compensated displacement generating device
03/13/1986WO1986001669A1 Movable apparatus for sound wiring and/or visualization
02/1986
02/27/1986WO1986001362A1 Piezoelectric loudspeaker having a feedback transducer
02/25/1986US4573189 Loudspeaker with high frequency motional feedback
02/18/1986CA1200887A1 Differential stethoscope
02/12/1986EP0171065A2 Arrangement for the acoustic feedback of loudspeakers
02/04/1986US4569076 Motion picture theater loudspeaker system
02/04/1986CA1200208A1 Directable microphone system
01/1986
01/29/1986EP0169605A2 Balance circuit arrangement for electrical reproduction devices, and balance control therefor
01/29/1986EP0169215A1 Loudspeaker system with boundary layer control
01/28/1986CA1200006A1 Oto-laryngeal communication system
01/21/1986US4566120 Loudspeaker system and loudspeaker for use in a loud-speaker system for converting an n-bit digitized electric signal into an acoustic signal
01/15/1986EP0168078A1 Arrangement for converting an electric signal into an acoustic signal or vice versa and a non-linear network for use in the arrangement
01/03/1986WO1986000133A1 Adaptive speech detector system
01/02/1986EP0166543A2 Mobile sound field correcting device
12/1985
12/31/1985CA1198684A1 Electronic control switch for a power boost amplifier
12/24/1985US4560838 Apparatus for integrating a plurality of audio systems
12/18/1985EP0164973A2 Mobile sound field correcting device
12/18/1985EP0164343A1 Electroacoustic sound transmitter
12/17/1985US4559642 Phased-array sound pickup apparatus
12/17/1985CA1198060A1 Method and apparatus for operating a loudspeaker below resonant frequency
12/04/1985EP0162858A1 Acoustic direction identification system.
12/04/1985EP0162855A1 Effects box system and method
12/03/1985CA1197470A1 Sound actuated microphone system
11/1985
11/26/1985US4555797 Hybrid loudspeaker system for converting digital signals to acoustic signals
11/12/1985CA1196741A1 Carbon microphone linearization technique
11/06/1985EP0160431A2 Sound field correction system
10/1985
10/30/1985EP0159546A1 Digital graphic equalizer
10/29/1985US4550430 Sound reproducing system utilizing motional feedback and an improved integrated magnetic structure
10/23/1985EP0158978A2 Mounting of transducers on a baffle, particularly for loudspeakers, preferentially for loudspeaker boxes
10/15/1985US4547819 For use with a magnetic pickup
10/09/1985EP0156826A1 Telephone transmission installation.
10/08/1985CA1194975A1 Ultrasonic transmitter
09/1985
09/25/1985EP0155294A1 Method of and apparatus for realising spatial sound effects.
09/24/1985CA1194207A1 Auditory subliminal message system and method
09/10/1985US4541112 Electroacoustic transducer system
09/10/1985CA1193356A1 Condenser microphone
08/1985
08/27/1985US4538296 Sound inhibitor for audio transducers
08/20/1985US4536887 Microphone-array apparatus and method for extracting desired signal
07/1985
07/23/1985CA1190984A1 Arrangement for avoiding undsirable oscillations in a closed-loop system and loud-speaking telephone set employing this arrangement
07/18/1985WO1985003186A1 Loudspeaker system with boundary layer control
07/16/1985CA1190481A1 Electrostatic loudspeaker
07/09/1985US4528691 Alternating variable delay control arrangement and method for push-pull audio transducers
07/09/1985US4528689 Sound monitoring apparatus
06/1985
06/26/1985EP0145997A2 Reproduction errors compensation device for electroacoustic transducers
06/20/1985WO1985002747A1 Electroacoustic sound transmitter
06/04/1985US4521908 Phased-array sound pickup apparatus having no unwanted response pattern
05/1985
05/22/1985EP0141953A1 Method and apparatus for the transmission of acoustic information as tactile vibrations
05/09/1985WO1985002022A1 Acoustic direction identification system
05/08/1985EP0140333A2 Sound reproducing system
05/08/1985EP0140078A1 Hearing aid having a housing to be worn behind the ear
04/1985
04/23/1985US4513284 Console priority control
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
04/16/1985US4512008 Small signal amplifying circuit for a pickup cartridge
04/16/1985CA1185666A1 Electroacoustic network
04/11/1985WO1985001631A1 Effects box system and method
04/11/1985EP0120901A4 Signal reproduction apparatus.
04/02/1985US4509193 Miniature acoustical transducer with filter/regulator power supply circuit
04/02/1985US4509190 Effects box system and method
03/1985
03/28/1985WO1985001411A1 Telephone transmission installation
03/26/1985CA1184649A1 Method and device for transforming an audiofrequency periodic voltage into acoustic waves and vice-versa
03/19/1985CA1184130A1 Apparatus for driving one or more transducer units
03/14/1985WO1985001177A1 Method of and apparatus for realising spatial sound effects
03/13/1985EP0134092A2 Loudspeaker with motional feedback
03/13/1985EP0133948A1 Method and apparatus for negative feedback of movement induced voltage in a loudspeaker
03/12/1985US4504704 Loudspeaker system
03/05/1985US4503554 Stereophonic balance control system
03/05/1985US4503553 Loudspeaker system
02/1985
02/19/1985US4501015 Apparatus for electroacoustic energy conversion
01/1985
01/29/1985US4496910 Pre-amplifier having improved sonic performance
01/22/1985US4495638 Audio-band electro-mechanical vibration converter
01/15/1985US4494074 Feedback control
01/08/1985US4493101 Anti-howl back device
01/01/1985US4491697 Condenser microphone
12/1984
12/25/1984US4490844 Low frequency transformer
12/25/1984US4490842 Headrest speaker device
12/25/1984US4490770 Overload protection of loudspeakers
12/25/1984US4490683 Electronic control switch for a power boost amplifier
12/18/1984US4489442 Sound actuated microphone system
12/12/1984EP0127886A2 Loudspeaker system
12/11/1984US4488012 MFB Loudspeaker
12/11/1984EP0114828A4 Oto-laryngeal communication system.
11/1984
11/28/1984EP0126420A1 A speech recognition system
11/27/1984US4485484 Signal processing arrangement for reducing audio interference
11/27/1984US4485272 Acoustic feedback cancelling electro-acoustic transducer network
11/14/1984EP0124798A1 Resonant peak control