| Patents for H04R 5 - Stereophonic arrangements (11,598) |
|---|
| 10/02/1985 | EP0156333A2 Artificial head measuring system |
| 09/03/1985 | US4539700 Personal portable audio device |
| 08/20/1985 | US4536716 Stereo amplifier circuit for bichannel signals |
| 07/23/1985 | US4531229 Method and apparatus for improving binaural hearing |
| 06/04/1985 | US4521906 Speaker systems for producing balanced stereo images at multiple locations |
| 05/14/1985 | US4517418 Portable stereophone |
| 04/11/1985 | EP0120901A4 Signal reproduction apparatus. |
| 04/02/1985 | US4509184 Stereo sound system |
| 03/26/1985 | CA1184505A1 Dimensional sound producing apparatus and method |
| 03/19/1985 | CA1184259A1 Stereo/monaural selecting circuit |
| 03/12/1985 | US4503930 Loudspeaker system |
| 03/05/1985 | US4503554 Stereophonic balance control system |
| 03/05/1985 | US4503553 Loudspeaker system |
| 02/26/1985 | US4501934 Loudspeaker system |
| 02/12/1985 | US4499593 Modular stereo headphones |
| 01/22/1985 | US4495638 Audio-band electro-mechanical vibration converter |
| 01/15/1985 | US4494074 Feedback control |
| 12/27/1984 | CA1179949A Apparatus for matching the d.c. volume control characteristics of two audio channels |
| 12/27/1984 | CA1179948A Video disc player for monophonic, stereophonic and bilingual records |
| 12/25/1984 | US4490842 Headrest speaker device |
| 12/25/1984 | US4490683 Electronic control switch for a power boost amplifier |
| 12/12/1984 | EP0127886A2 Loudspeaker system |
| 12/05/1984 | EP0126783A1 Wide-band, noise-free, high-dynamic range dummy head with high fidelity reproduction of hearing stimuli |
| 11/21/1984 | EP0125250A1 Storage unit usable particularly to accomodate the various components of a high fidelity chain |
| 10/10/1984 | EP0120901A1 Signal reproduction apparatus |
| 10/09/1984 | US4475620 Loudspeaker with wall reflex absorber |
| 10/03/1984 | EP0120126A2 Systems of speaker arrangements |
| 10/02/1984 | US4475226 Stereo sound and light track system |
| 10/02/1984 | CA1175362A1 Acoustic image enhancing method and apparatus |
| 09/18/1984 | US4472834 Loudspeaker system |
| 09/05/1984 | EP0117487A1 Television apparatus with an internal bass speaker |
| 09/04/1984 | CA1173756A1 Headphone |
| 08/14/1984 | US4466117 Microphone for stereo reception |
| 08/14/1984 | US4465907 Headset receiver and sanitizing storage system therefor |
| 08/14/1984 | CA1172744A1 Speaker unit for headphones |
| 08/08/1984 | EP0114951A1 Stereophonic loudspeaker box |
| 07/25/1984 | EP0113780A1 Monaural to binaural audio processor |
| 07/25/1984 | EP0113761A1 Electronic outdoor warning siren |
| 06/19/1984 | US4455677 Multipurpose headphone assembly |
| 06/05/1984 | US4452333 Speaker system |
| 05/22/1984 | US4450495 Portable acoustic device |
| 05/10/1984 | WO1984001702A1 Storage unit usable particularly to accomodate the various components of a high fidelity chain |
| 04/24/1984 | US4445227 Loudspeaker having improved directional characteristics |
| 04/17/1984 | CA1165820A1 Radio receiving apparatus using headphone connector cable as an antenna |
| 04/12/1984 | WO1984001479A1 Signal reproduction apparatus |
| 04/10/1984 | US4441577 Direction-variable speaker system |
| 03/20/1984 | US4437541 Controlled dispersion speaker configuration |
| 03/06/1984 | CA1163202A1 Loudspeaker or microphone arrangement having a direction - and frequency-independent behavior |
| 02/21/1984 | US4433209 Stereo/monaural selecting circuit |
| 02/16/1984 | WO1984000661A1 Monaural to binaural audio processor |
| 02/02/1984 | WO1984000434A1 Electronic outdoor warning siren |
| 01/17/1984 | US4426553 Vehicle loudspeaker arrangement with magnetic-field-sensitive device |
| 01/03/1984 | US4424416 Acoustic reproducing apparatus |
| 12/06/1983 | CA1158173A1 Receiving system having pre-selected directional response |
| 11/29/1983 | US4418243 Acoustic projection stereophonic system |
| 11/29/1983 | CA1157781A2 Method and system of controlling sound and effects devices by a film strip |
| 11/15/1983 | US4415768 Tuning apparatus and method |
| 10/25/1983 | US4412106 High fidelity stereophonic reproduction system |
| 10/25/1983 | US4412105 Laser microphone |
| 10/18/1983 | US4410761 Stereo loudspeaker system for a picture reproducing screen |
| 10/11/1983 | US4409442 Headphone |
| 09/15/1983 | WO1983003181A1 Electroacoustic converter |
| 08/16/1983 | US4399334 Speaker unit for headphones |
| 08/16/1983 | US4399328 Direction and frequency independent column of electro-acoustic transducers |
| 07/12/1983 | US4393270 Controlling perceived sound source direction |
| 07/12/1983 | US4392548 Speaker enclosure and method of producing same |
| 06/14/1983 | US4388494 Process and apparatus for improved dummy head stereophonic reproduction |
| 06/14/1983 | US4388492 Miniature stereo device with extensible speakers |
| 06/08/1983 | EP0080991A2 Loudspeaker |
| 06/08/1983 | EP0080990A2 Loudspeaker with wall reflex absorber |
| 05/31/1983 | CA1147448A1 Audio-band electromechanical vibration converter |
| 05/03/1983 | USRE31228 Loudspeaker system |
| 01/18/1983 | US4369521 Radio receiving apparatus using headphone connector cable as an antenna |
| 12/28/1982 | US4365688 Speaker cabinet |
| 12/07/1982 | US4362907 Combination automobile sun visor and radio and speaker assembly |
| 11/09/1982 | CA1135196A1 Microphone system for producing signals for surround-sound transmission and reproduction |
| 10/12/1982 | US4354067 Audio-band electromechanical vibration converter |
| 09/28/1982 | CA1132460A1 Monitor ampliphones |
| 09/21/1982 | US4350847 Subwoofer system using a passive radiator |
| 09/07/1982 | US4348552 Direct/reflecting speaker system and triangular shaped enclosure |
| 08/11/1982 | EP0057287A1 Arrangement for recording and/or processing stereophonic signals |
| 07/28/1982 | EP0056479A1 Artificial head |
| 07/06/1982 | US4338489 Headphone construction |
| 06/15/1982 | US4334740 Receiving system having pre-selected directional response |
| 06/01/1982 | US4332979 Electronic environmental acoustic simulator |
| 04/21/1982 | EP0050100A2 Device for the spatial codification of sounds |
| 04/20/1982 | US4326100 Combination automobile sun visor and speaker assembly |
| 04/20/1982 | US4326099 Low frequency cabinet, in particular for a triphonic audio network |
| 03/30/1982 | US4322585 Personal electronic listening system with an air and bone transducer mounted on the clothing collar |
| 02/16/1982 | CA1118363A1 Varying loudspeaker spatial characteristics |
| 02/02/1982 | CA1117433A1 Control for audio receiver |
| 12/29/1981 | US4308426 Simulated ear for receiving a microphone |
| 10/27/1981 | US4297535 Stereo headset |
| 10/06/1981 | CA1110328A1 Optical communication transmission arrangements |
| 09/22/1981 | US4290332 Sound shielding and pick-up device |
| 09/02/1981 | EP0034844A1 A direction- and frequency-independent loudspeaker- or microphone-column or a loudspeaker- or microphone-surface |
| 07/07/1981 | US4277654 Stethoscopic headphone set |
| 07/07/1981 | CA1104504A1 Microphone assembly |
| 05/26/1981 | US4270023 Cylindrical speaker mechanism |
| 05/12/1981 | US4267405 Stereo speaker system for creating stereo images |