Patents for H04R 3 - Circuits for transducers (18,190) |
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06/03/1986 | US4593405 Loudspeaker system with combination crossover and equalizer |
05/28/1986 | EP0182764A2 Electromechanical film and procedure for manufacturing same |
05/27/1986 | US4592088 Speaker apparatus |
05/21/1986 | EP0181608A1 Reference load amplifier correction systemand method |
05/13/1986 | US4589137 Electronic noise-reducing system |
05/13/1986 | US4589136 Circuit for suppressing amplitude peaks caused by stop consonants in an electroacoustic transmission system |
05/13/1986 | US4589135 Zero phase shift filtering |
05/13/1986 | US4589133 Attenuation of sound waves |
05/06/1986 | CA1204062A1 Console priority control |
04/29/1986 | US4586195 Microphone range finder |
04/15/1986 | US4583245 Speaker system protection circuit |
04/08/1986 | US4581758 Acoustic direction identification system |
04/02/1986 | EP0176459A1 Ear phone, telephone handset and head phones for correcting individual hearing deficiencies |
03/25/1986 | CA1202363A1 Temperature compensated displacement generating device |
03/13/1986 | WO1986001669A1 Movable apparatus for sound wiring and/or visualization |
02/27/1986 | WO1986001362A1 Piezoelectric loudspeaker having a feedback transducer |
02/25/1986 | US4573189 Loudspeaker with high frequency motional feedback |
02/18/1986 | CA1200887A1 Differential stethoscope |
02/12/1986 | EP0171065A2 Arrangement for the acoustic feedback of loudspeakers |
02/04/1986 | US4569076 Motion picture theater loudspeaker system |
02/04/1986 | CA1200208A1 Directable microphone system |
01/29/1986 | EP0169605A2 Balance circuit arrangement for electrical reproduction devices, and balance control therefor |
01/29/1986 | EP0169215A1 Loudspeaker system with boundary layer control |
01/28/1986 | CA1200006A1 Oto-laryngeal communication system |
01/21/1986 | US4566120 Loudspeaker system and loudspeaker for use in a loud-speaker system for converting an n-bit digitized electric signal into an acoustic signal |
01/15/1986 | EP0168078A1 Arrangement for converting an electric signal into an acoustic signal or vice versa and a non-linear network for use in the arrangement |
01/03/1986 | WO1986000133A1 Adaptive speech detector system |
01/02/1986 | EP0166543A2 Mobile sound field correcting device |
12/31/1985 | CA1198684A1 Electronic control switch for a power boost amplifier |
12/24/1985 | US4560838 Apparatus for integrating a plurality of audio systems |
12/18/1985 | EP0164973A2 Mobile sound field correcting device |
12/18/1985 | EP0164343A1 Electroacoustic sound transmitter |
12/17/1985 | US4559642 Phased-array sound pickup apparatus |
12/17/1985 | CA1198060A1 Method and apparatus for operating a loudspeaker below resonant frequency |
12/04/1985 | EP0162858A1 Acoustic direction identification system. |
12/04/1985 | EP0162855A1 Effects box system and method |
12/03/1985 | CA1197470A1 Sound actuated microphone system |
11/26/1985 | US4555797 Hybrid loudspeaker system for converting digital signals to acoustic signals |
11/12/1985 | CA1196741A1 Carbon microphone linearization technique |
11/06/1985 | EP0160431A2 Sound field correction system |
10/30/1985 | EP0159546A1 Digital graphic equalizer |
10/29/1985 | US4550430 Sound reproducing system utilizing motional feedback and an improved integrated magnetic structure |
10/23/1985 | EP0158978A2 Mounting of transducers on a baffle, particularly for loudspeakers, preferentially for loudspeaker boxes |
10/15/1985 | US4547819 For use with a magnetic pickup |
10/09/1985 | EP0156826A1 Telephone transmission installation. |
10/08/1985 | CA1194975A1 Ultrasonic transmitter |
09/25/1985 | EP0155294A1 Method of and apparatus for realising spatial sound effects. |
09/24/1985 | CA1194207A1 Auditory subliminal message system and method |
09/10/1985 | US4541112 Electroacoustic transducer system |
09/10/1985 | CA1193356A1 Condenser microphone |
08/27/1985 | US4538296 Sound inhibitor for audio transducers |
08/20/1985 | US4536887 Microphone-array apparatus and method for extracting desired signal |
07/23/1985 | CA1190984A1 Arrangement for avoiding undsirable oscillations in a closed-loop system and loud-speaking telephone set employing this arrangement |
07/18/1985 | WO1985003186A1 Loudspeaker system with boundary layer control |
07/16/1985 | CA1190481A1 Electrostatic loudspeaker |
07/09/1985 | US4528691 Alternating variable delay control arrangement and method for push-pull audio transducers |
07/09/1985 | US4528689 Sound monitoring apparatus |
06/26/1985 | EP0145997A2 Reproduction errors compensation device for electroacoustic transducers |
06/20/1985 | WO1985002747A1 Electroacoustic sound transmitter |
06/04/1985 | US4521908 Phased-array sound pickup apparatus having no unwanted response pattern |
05/22/1985 | EP0141953A1 Method and apparatus for the transmission of acoustic information as tactile vibrations |
05/09/1985 | WO1985002022A1 Acoustic direction identification system |
05/08/1985 | EP0140333A2 Sound reproducing system |
05/08/1985 | EP0140078A1 Hearing aid having a housing to be worn behind the ear |
04/23/1985 | US4513284 Console priority control |
04/17/1985 | EP0137550A1 Loudspeaker system and loudspeaker for converting an n-bit digitized electric signal into an acoustic signal |
04/17/1985 | EP0137549A1 Hybrid loudspeaker system, at option with one or more correction circuits |
04/16/1985 | US4512008 Small signal amplifying circuit for a pickup cartridge |
04/16/1985 | CA1185666A1 Electroacoustic network |
04/11/1985 | WO1985001631A1 Effects box system and method |
04/11/1985 | EP0120901A4 Signal reproduction apparatus. |
04/02/1985 | US4509193 Miniature acoustical transducer with filter/regulator power supply circuit |
04/02/1985 | US4509190 Effects box system and method |
03/28/1985 | WO1985001411A1 Telephone transmission installation |
03/26/1985 | CA1184649A1 Method and device for transforming an audiofrequency periodic voltage into acoustic waves and vice-versa |
03/19/1985 | CA1184130A1 Apparatus for driving one or more transducer units |
03/14/1985 | WO1985001177A1 Method of and apparatus for realising spatial sound effects |
03/13/1985 | EP0134092A2 Loudspeaker with motional feedback |
03/13/1985 | EP0133948A1 Method and apparatus for negative feedback of movement induced voltage in a loudspeaker |
03/12/1985 | US4504704 Loudspeaker system |
03/05/1985 | US4503554 Stereophonic balance control system |
03/05/1985 | US4503553 Loudspeaker system |
02/19/1985 | US4501015 Apparatus for electroacoustic energy conversion |
01/29/1985 | US4496910 Pre-amplifier having improved sonic performance |
01/22/1985 | US4495638 Audio-band electro-mechanical vibration converter |
01/15/1985 | US4494074 Feedback control |
01/08/1985 | US4493101 Anti-howl back device |
01/01/1985 | US4491697 Condenser microphone |
12/25/1984 | US4490844 Low frequency transformer |
12/25/1984 | US4490842 Headrest speaker device |
12/25/1984 | US4490770 Overload protection of loudspeakers |
12/25/1984 | US4490683 Electronic control switch for a power boost amplifier |
12/18/1984 | US4489442 Sound actuated microphone system |
12/12/1984 | EP0127886A2 Loudspeaker system |
12/11/1984 | US4488012 MFB Loudspeaker |
12/11/1984 | EP0114828A4 Oto-laryngeal communication system. |
11/28/1984 | EP0126420A1 A speech recognition system |
11/27/1984 | US4485484 Signal processing arrangement for reducing audio interference |
11/27/1984 | US4485272 Acoustic feedback cancelling electro-acoustic transducer network |
11/14/1984 | EP0124798A1 Resonant peak control |