| Patents for H04R 1 - Details of transducers (42,173) |
|---|
| 08/31/1994 | EP0613320A2 Wireless headphones |
| 08/31/1994 | EP0613318A1 Microphone apparatus |
| 08/31/1994 | EP0613317A1 Speaker system |
| 08/31/1994 | CN2175995Y Improved microphone mouthpiece |
| 08/30/1994 | US5343535 Loudspeaker device |
| 08/30/1994 | US5343523 Telephone headset structure for reducing ambient noise |
| 08/30/1994 | US5341762 Ultrasonic pest control device and method for constructing the same |
| 08/25/1994 | DE4305565A1 Mechanical holding device in the microphone stand |
| 08/24/1994 | EP0612194A1 Speaker system |
| 08/24/1994 | EP0498793B1 Process for manufacturing an acoustic sensor with an essentially non-detachable protective layer, and acoustic sensor so obtained |
| 08/24/1994 | CN2175505Y Support for loud speaker |
| 08/23/1994 | US5341420 Noise-cancelling handset |
| 08/23/1994 | US5340316 Synthesis-based speech training system |
| 08/23/1994 | US5340066 Stand for article |
| 08/18/1994 | WO1994018814A1 Loudspeaker system |
| 08/18/1994 | WO1994018532A1 Ultrasonic pest control device and method for constructing the same |
| 08/18/1994 | WO1994017764A1 Cover for a sealing ring of an earmuff |
| 08/18/1994 | WO1994005231A3 Ear based hearing protector/communication system |
| 08/18/1994 | DE4403723A1 Microphone for a video camera |
| 08/18/1994 | DE4304628A1 Lining for a housing |
| 08/18/1994 | CA2155101A1 Ultrasonic pest control device and method for constructing the same |
| 08/17/1994 | EP0611111A1 Headphone |
| 08/17/1994 | EP0610769A2 Loudspeaker |
| 08/17/1994 | EP0610669A2 Apparatus for treating parts of the body by vibration |
| 08/17/1994 | CN1090958A Method for generating rock roll music |
| 08/16/1994 | US5339287 Airborne sensor for listening to acoustic signals |
| 08/16/1994 | US5339286 Composite electroacoustic transducer |
| 08/16/1994 | US5337461 Loading of flextensional transducer shells |
| 08/16/1994 | CA2027138C Loudspeaking telephone station including directional microphone |
| 08/10/1994 | EP0609555A2 Frequency selective component and method |
| 08/10/1994 | EP0609553A2 Pick-up |
| 08/10/1994 | EP0574578A4 Speaker cover assembly |
| 08/10/1994 | CN2174020Y Double mouthpiece microphone |
| 08/04/1994 | WO1994017513A1 Earpiece for active noise cancelling headset |
| 08/03/1994 | CN2173484Y Loudspeaker box for building decoration |
| 08/02/1994 | US5335285 Earphone-type speaker assembly |
| 08/02/1994 | US5335283 Loudspeaker apparatus for electronic keyboard musical instrument |
| 08/02/1994 | US5335282 Signal summing non-microphonic differential microphone |
| 08/02/1994 | US5335209 Acoustic sensor and projector module having an active baffle structure |
| 08/02/1994 | US5335011 Sound localization system for teleconferencing using self-steering microphone arrays |
| 07/28/1994 | DE4301550A1 Horn loudspeaker having internal tractrix shaped wedge |
| 07/26/1994 | US5333206 Dual element headphone |
| 07/26/1994 | US5333204 Speaker system |
| 07/26/1994 | US5332871 Sliding valve ear plug |
| 07/26/1994 | CA2009293C Handset transmitter for communication equipment |
| 07/21/1994 | WO1994016535A1 Loudspeaker radiator designed to improve sound quality |
| 07/21/1994 | WO1994016517A1 Sound localization system for teleconferencing using self-steering microphone arrays |
| 07/20/1994 | EP0606764A2 Reflection-type speaker apparatus |
| 07/20/1994 | EP0606387A1 Process and system for sound pick-up, apparatus for sound pick-up and reproduction. |
| 07/19/1994 | US5331605 Reinforced foam core acoustic baffle |
| 07/19/1994 | US5331119 Speaker support frame |
| 07/19/1994 | US5330144 Frame structure and assembly for wall mounting a speaker or camera |
| 07/14/1994 | DE4345080A1 Radiation arrangement for improvement of tone of loudspeakers |
| 07/14/1994 | DE4300379A1 HF condenser microphone circuit |
| 07/13/1994 | CN2171965Y Sound coupler |
| 07/13/1994 | CN2171964Y Sterilized cover for microphone |
| 07/13/1994 | CN2171963Y Microphone casing |
| 07/13/1994 | CA2113123A1 Stand for articles |
| 07/12/1994 | US5329593 Noise cancelling microphone |
| 07/12/1994 | US5329592 Headband for removably securing stereo earphones |
| 07/12/1994 | US5329499 Acoustic transmitter |
| 07/12/1994 | US5327985 Acoustical transducer enclosure |
| 07/09/1994 | CA2113055A1 Frame structure and assembly for wall mounting a speaker or camera |
| 07/06/1994 | EP0605400A1 Dynamic loudspeaker |
| 07/06/1994 | EP0605281A1 Method of vectorial noise reduction in speech and device for performing said method |
| 07/06/1994 | EP0605224A1 Television set speaker system |
| 07/06/1994 | EP0604766A2 Moving coil-bonding for loudspeakers |
| 07/06/1994 | EP0604450A1 Loudspeaker with an enclosure having a hexagonal prism shape |
| 07/06/1994 | EP0578752A4 Inconspicuous communication method utilizing remote electromagnetic drive |
| 07/06/1994 | CN2171186Y 无线话筒装置 Wireless microphone system |
| 07/06/1994 | CN2171178Y 电话机受话器 Telephone receiver |
| 07/05/1994 | US5327507 Headphone apparatus |
| 07/05/1994 | US5327506 Voice transmission system and method for high ambient noise conditions |
| 07/05/1994 | US5327504 Device to improve the bass reproduction in loudspeaker systems using closed housings |
| 07/05/1994 | US5327178 Stereo speakers mounted on head |
| 06/28/1994 | US5325439 Loudspeaker apparatus |
| 06/28/1994 | US5324896 Audio loudspeaker system |
| 06/23/1994 | WO1994014305A1 Reflex folded horn speaker enclosure |
| 06/23/1994 | WO1994014292A1 An electro-acoustic transducer |
| 06/23/1994 | WO1994014152A1 A head mounted display system |
| 06/23/1994 | CA2150934A1 A head mounted display system |
| 06/23/1994 | CA2128010A1 An electro-acoustic transducer |
| 06/22/1994 | CN2169964Y Omnibearing radiant disc shape combined loud speaker |
| 06/22/1994 | CN2169963Y Non-holding earphone fixer for radio communication in car |
| 06/21/1994 | US5323466 Tandem transducer magnet structure |
| 06/21/1994 | US5323257 Microphone and microphone system |
| 06/21/1994 | US5322979 Speaker cover assembly |
| 06/21/1994 | US5322255 Mounting bracket |
| 06/18/1994 | CA2085638A1 Solar powered amp |
| 06/15/1994 | EP0580579A4 Improvements in and relating to transmission line loudspeakers |
| 06/14/1994 | US5321763 Body sense speaker |
| 06/14/1994 | US5321760 Retractable speaker assembly |
| 06/09/1994 | DE4331959A1 Loudspeaker box with opposing loudspeakers - has common sound reflector between latter provided by durable cone with concave conical surfaces |
| 06/09/1994 | DE4241212A1 Drive system for moving coil loudspeakers - has moving coil supplied by central contact discs with coil springs loading carrier coupled to coil |
| 06/08/1994 | EP0600758A1 Seal for electro-acoustic motors |
| 06/08/1994 | CN1087769A Multiple driver electroacoustical transducing |
| 06/07/1994 | US5319717 Hearing aid microphone with modified high-frequency response |
| 06/07/1994 | US5319165 Dual bandpass secondary source |
| 06/07/1994 | US5319164 Speaker holder |
| 05/31/1994 | US5317643 Audio helmet apparatus |