| Patents for H04R 3 - Circuits for transducers (18,190) |
|---|
| 10/30/1996 | CN2239115Y Integral karaoke acoustics |
| 10/23/1996 | EP0739123A2 Communication unit with residual acoustic echo suppression and method for suppressing residual echoes |
| 10/23/1996 | EP0739044A2 Noise reducing element and electrical circuit having the same |
| 10/22/1996 | US5568560 Audio crossover circuit |
| 10/22/1996 | US5568559 Sound processing apparatus |
| 10/22/1996 | US5568558 Adaptive noise cancellation device |
| 10/22/1996 | US5568516 For transmitting audio signals between first and second location |
| 10/22/1996 | US5567863 For testing microphones |
| 10/17/1996 | WO1996032776A2 Signal amplification system with automatic equalizer |
| 10/15/1996 | US5566241 Method and apparatus for presentation of on-line directional sound |
| 10/09/1996 | EP0737022A2 Device for noise reduction |
| 10/08/1996 | US5563954 Microphone apparatus |
| 10/08/1996 | US5563913 For processing an input digital signal |
| 10/03/1996 | WO1996031086A1 Improvements in or relating to loudspeakers |
| 10/03/1996 | WO1996031085A1 Method and device for processing signals |
| 10/03/1996 | WO1996031082A2 Audio bass speaker driver circuit |
| 10/03/1996 | WO1996031000A1 Sound system gain and equalization circuit |
| 10/03/1996 | CA2216385A1 Audio bass speaker driver circuit |
| 10/02/1996 | EP0734621A1 A wireless digital communication system, a radio apparatus, a digital speaker, and a digital speaker controlling apparatus |
| 10/01/1996 | US5561737 Voice actuated switching system |
| 09/26/1996 | WO1996029780A1 Dual action automatic sound level control |
| 09/24/1996 | US5559893 Method and device for active noise reduction in a local area |
| 09/18/1996 | EP0732034A1 Improvement to a power amplifier/loudspeaker interface |
| 09/12/1996 | WO1996028000A1 Portable speakers with enhanced low frequency response |
| 09/11/1996 | EP0731593A2 Echo removing apparatus |
| 09/11/1996 | EP0606387B1 System for sound pick-up, apparatus for sound pick-up and reproduction |
| 09/06/1996 | WO1996027240A1 Dual audio program system |
| 09/04/1996 | EP0730262A2 Noise cancelling device capable of achieving a reduced convergence time and a reduced residual error after convergence |
| 09/03/1996 | US5553150 Reverberation - imparting device capable of modulating an input signal by random numbers |
| 08/29/1996 | WO1996026624A1 Apparatus and method for adaptively precompensating for loudspeaker distortions |
| 08/29/1996 | CA2211954A1 Apparatus and method for adaptively precompensating for loudspeaker distortions |
| 08/28/1996 | EP0729288A2 Noise canceler |
| 08/28/1996 | EP0729287A2 Low frequency audio conversion circuit |
| 08/28/1996 | CN2234165Y Reversed-phase voise-frequency filter circuit for audio-system |
| 08/27/1996 | US5550925 Sound processing device |
| 08/27/1996 | US5550923 Directional ear device with adaptive bandwidth and gain control |
| 08/27/1996 | US5550508 Phase inverter selection apparatus for tone alteration in a tube-type audio amplifier |
| 08/22/1996 | WO1996025733A1 Voice activity detection |
| 08/22/1996 | WO1996025649A1 Process and device for determining the tonality of an audio signal |
| 08/22/1996 | DE19505031A1 Loudspeaker box for converting audio signals into diffuse acoustic field |
| 08/20/1996 | US5548654 Infrared audio transmitter system |
| 08/20/1996 | US5548650 Speaker excursion control system |
| 08/20/1996 | US5548335 Dual directional microphone video camera having operator voice cancellation and control |
| 08/13/1996 | US5546458 Handsfree communication apparatus |
| 08/06/1996 | US5544250 Noise suppression system and method therefor |
| 08/06/1996 | US5544249 Method of simulating a room and/or sound impression |
| 08/06/1996 | US5543760 Protection circuit for a power amplifier |
| 07/31/1996 | EP0724353A2 Echo cancellation |
| 07/31/1996 | EP0723733A1 Microphone system for teleconferencing system |
| 07/30/1996 | US5542001 Smart amplifier for loudspeaker motional feedback derived from linearization of a nonlinear motion responsive signal |
| 07/25/1996 | DE19600689A1 Capacitive component reduction circuit e.g. in electrostatic converter |
| 07/24/1996 | CN1127442A Isolated multi-output power amplifier |
| 07/23/1996 | US5539859 Method of using a dominant angle of incidence to reduce acoustic noise in a speech signal |
| 07/23/1996 | US5539832 Multi-channel signal separation using cross-polyspectra |
| 07/16/1996 | US5537668 Audio signal reproducing device |
| 07/16/1996 | US5537479 Dual-driver bass speaker with acoustic reduction of out-of-phase and electronic reduction of in-phase distortion harmonics |
| 07/11/1996 | DE19500072A1 Amplifying and separating mixture of frequencies into several frequency ranges esp. for multipath loud speaker combinations |
| 07/03/1996 | EP0719493A1 Apparatus and method for reducing acoustic feedback |
| 07/02/1996 | US5533135 Crossover system |
| 07/02/1996 | US5533134 Motional feedback loudspeaker apparatus having a coupling member for connecting a voice coil bobbin with a detecting coil bobbin |
| 06/27/1996 | DE4445893A1 Electronic audio appts. with mute control |
| 06/27/1996 | DE19533946A1 Loudspeaker crossover method for dividing signal into frequency bands |
| 06/26/1996 | EP0719071A1 Hearing aid with reference microphone |
| 06/26/1996 | EP0719070A1 Sound pick-up device, comprising a video system for the adjustment of parameters and process for adjusting |
| 06/26/1996 | EP0698333A4 Voice coil excursion and amplitude gain control device |
| 06/25/1996 | US5530770 Multiple output transformers network for sound reproducing system |
| 06/25/1996 | CA2049173C Speech recognition apparatus |
| 06/22/1996 | CA2165716A1 Hearing aid |
| 06/20/1996 | WO1996012355A3 A wireless digital communication system, a radio apparatus, a digital speaker, and a digital speaker controlling apparatus |
| 06/18/1996 | US5528695 Predictive protection arrangement for electroacoustic transducer |
| 06/18/1996 | US5528694 Audio signal processing arrangement for deriving a centre channel signal and also an audio visual reproduction system comprising such a processing arrangement |
| 06/11/1996 | US5526433 Signal processing system |
| 06/11/1996 | US5526421 Voice transmission systems with voice cancellation |
| 06/04/1996 | US5524059 Sound acquisition method and system, and sound acquisition and reproduction apparatus |
| 06/04/1996 | US5524056 Hearing aid having plural microphones and a microphone switching system |
| 05/29/1996 | CN1031905C Karaoke system and method of controlling the same |
| 05/28/1996 | US5521886 Diaphragm for use with an electro-acoustic transducer and method of producing the same |
| 05/28/1996 | US5521635 Voice filter system for a video camera |
| 05/23/1996 | WO1996015646A1 Noise cancellation headset for use with stand or worn on ear |
| 05/23/1996 | WO1996015541A1 Noise cancellation apparatus |
| 05/23/1996 | CA2204115A1 Noise cancellation headset for use with stand or worn on ear |
| 05/21/1996 | US5519781 Self damping speaker matching device and method |
| 05/19/1996 | CA2136163A1 Technology incorporated into a pad containing the audible 'back-up' to any instructions, statements, warnings, legends, expressions, advertisements presently provided in the printed form |
| 05/17/1996 | WO1996014723A1 Loudspeaker system with controlled directional sensitivity |
| 05/14/1996 | US5517570 Sound reproducing array processor system |
| 05/09/1996 | DE4439468A1 Acoustic signal transmitter for urban tramways |
| 05/09/1996 | DE19520779C1 Automatic volume correction e.g. for audio or stereo signals replay on TV and films |
| 05/09/1996 | CA2203159A1 Apparatus and method of enhancing audio signals |
| 05/07/1996 | US5515445 Long-time balancing of omni microphones |
| 05/07/1996 | US5515432 Method and apparatus for volume and intelligibility control for a loudspeaker |
| 05/05/1996 | CA2135155A1 Prompting device and amplifier system employing same |
| 04/25/1996 | WO1996012355A2 A wireless digital communication system, a radio apparatus, a digital speaker, and a digital speaker controlling apparatus |
| 04/24/1996 | CN1121301A Long-time balancing of omni microphones |
| 04/23/1996 | US5511129 Method of conditioning programmable filter apparatus |
| 04/18/1996 | DE4436272A1 Influencing the directional characteristics of acousto-electrical receiver device with at least two microphones with different individual directional characteristics |
| 04/17/1996 | EP0706835A1 Method of operating an ultrasonic piezoelectric transducer and circuit arrangement for performing the method |
| 04/17/1996 | EP0706732A1 Short range inductively coupled communication system employing time variant modulation |
| 04/11/1996 | WO1996010878A1 Very low power cordless headset system |
| 04/10/1996 | CN1120298A A directional microphone system |
| 04/10/1996 | CN1120297A Direction finder |