| Patents for H04R 1 - Details of transducers (42,173) |
|---|
| 03/02/1993 | US5191619 Bass enhancing device for a speaker system |
| 03/02/1993 | US5191618 Rotary low-frequency sound reproducing apparatus and method |
| 03/02/1993 | US5191177 Tube speaker |
| 03/02/1993 | US5191176 Audio loudspeaker enclosure |
| 03/02/1993 | US5190258 Articulated support assembly |
| 03/02/1993 | CA1314089C Pressure compensated communication system |
| 02/25/1993 | DE4227826A1 Digital acoustic signal processor esp. for hearing aid - provides choice of reprodn. of speech in real time or at speed adapted to hearing defect |
| 02/25/1993 | DE4127369A1 Moving coil loudspeaker housing producing improved sound through less vibration - mfd. from reduced number of components using recycled plastic contg. high proportion of polyethylene@ |
| 02/25/1993 | DE4126724A1 Miniature equipment clamp, e.g. for microphone in any location - comprises spring clamp with jaws pivoted about point of cable entry into centre of handling unit |
| 02/24/1993 | EP0528404A2 Audio signal reproducing device |
| 02/24/1993 | EP0527963A1 Loading of flextensional transducer shells. |
| 02/24/1993 | EP0490930A4 Electromagnetic resonant vibrator |
| 02/24/1993 | EP0260313B1 Adaptor for coupling plural compression drivers to a common horn |
| 02/24/1993 | CN1069382A Resonant enclosure and its production method |
| 02/23/1993 | US5189706 Acoustic apparatus |
| 02/23/1993 | US5189517 Remote unit for controlling the operation of a television receiver |
| 02/17/1993 | EP0527591A2 Infrared cordless microphone |
| 02/17/1993 | EP0527556A1 Adjustable filter for differential microphones |
| 02/16/1993 | US5187333 Coiled exponential bass/midrange/high frequency horn loudspeaker |
| 02/11/1993 | DE4226471A1 Tie or label clip=on microphone capsule holder - is gallows-shaped with collar part connected on one side to support part preventing transmission of extraneous noise |
| 02/11/1993 | DE4126121A1 Dynamic car loudspeaker with conical diaphragm - has permanent magnet of smaller dia. than that of oscillation coil into which it penetrates |
| 02/09/1993 | US5185807 Headset with multi-position stirrup assemblies |
| 02/07/1993 | WO1993002808A1 Probe for measuring acoustic fields of high intensity |
| 02/07/1993 | CA2093437A1 Probe for measuring acoustic fields of high intensity |
| 02/03/1993 | EP0525777A1 Speaker driving circuit |
| 02/03/1993 | EP0525648A2 Vibrator for producing a body-felt vibration |
| 02/02/1993 | US5184332 Multiport underwater sound transducer |
| 01/27/1993 | CN1068467A Personal earphone for language study |
| 01/27/1993 | CN1068456A Integrated diver face mask and ultrasound underwater voice communication apparatus |
| 01/26/1993 | US5182774 Noise cancellation headset |
| 01/26/1993 | CA1313254C Induction speaker without leads and voice coil |
| 01/26/1993 | CA1313253C Electro-acoustic transducer |
| 01/26/1993 | CA1313144C Earplug and surroundings |
| 01/21/1993 | WO1993001690A1 Microphone with concealed port |
| 01/21/1993 | WO1993001588A1 A motor-vehicle horn |
| 01/20/1993 | EP0523410A2 Arrangement for reproducing bass sound in vehicles |
| 01/19/1993 | US5181253 Loudspeaker assembly |
| 01/19/1993 | US5181252 High compliance headphone driving |
| 01/14/1993 | DE4134943C1 Spherical diaphragm for loudspeaker - is mounted for driving by central, hollow sphere of light but rigid material |
| 01/12/1993 | US5179595 Electrodynamic-fluidic transducer element for pneumatic loudspeaker |
| 01/07/1993 | EP0521655A1 A loudspeaker cluster |
| 01/07/1993 | EP0521597A2 Integrated diver face mask and ultrasound underwater voice communication apparatus |
| 01/07/1993 | EP0521491A2 Printer having circuit for providing improved printing quality |
| 01/06/1993 | CN1067587A Headpiece for electronic therapy |
| 01/06/1993 | CA2062670A1 Integrated diver face mask and ultrasound underwater voice communication apparatus |
| 01/05/1993 | US5177329 High efficiency low frequency speaker system |
| 12/30/1992 | EP0520385A2 Arrangement of loudspeakers |
| 12/30/1992 | EP0520017A1 Multipurpose headwear |
| 12/29/1992 | US5174645 Electric candle with sound producing means |
| 12/26/1992 | CA2072322A1 Loudspeaker cluster comprising a plurality of splay angle adjustable loudspeaker cabinets, a device for assembling, hanging or stacking the loudspeaker cabinets, and an apparatus for adjusting splay angle between the loudspeaker cabinets |
| 12/23/1992 | WO1992022990A1 Stereo loudspeaker unit with audio mirrors |
| 12/23/1992 | EP0519621A1 Speech transmitter |
| 12/23/1992 | EP0519509A2 Woofer module for use in a television set |
| 12/23/1992 | EP0518906A1 Earwax trap for use with hearing-aid apparatus, and hearing-aid apparatus with such a trap. |
| 12/22/1992 | US5173943 Compact subwoofer with exceptional low frequency response |
| 12/22/1992 | US5173942 Audio system operable in directional and non-directional modes |
| 12/22/1992 | US5173575 Acoustic apparatus |
| 12/16/1992 | EP0518668A2 Hemispherically wide-radiating-angle loudspeaker system |
| 12/16/1992 | EP0518041A1 Ventilated loudspeaker |
| 12/16/1992 | CN2125219U Full direction loudspeaker |
| 12/15/1992 | US5171930 Electroglottograph-driven controller for a MIDI-compatible electronic music synthesizer device |
| 12/15/1992 | US5170793 Catheter |
| 12/13/1992 | CA2070896A1 Hemispherically wide-radiating-angle loudspeaker system |
| 12/10/1992 | WO1992022177A1 Audio transducer improvements |
| 12/10/1992 | WO1992022176A1 Noise cancelling microphone and boot mounting arrangement |
| 12/10/1992 | WO1992022175A1 Magnetic drive system for loudspeaker |
| 12/10/1992 | WO1992022055A1 Accoustic logic circuits |
| 12/10/1992 | CA2109711A1 Loudspeaker |
| 12/09/1992 | EP0517540A2 Portable sound system |
| 12/09/1992 | EP0517497A2 Earphone |
| 12/09/1992 | CN1019444B Singnal sensor insensible to static pressure change |
| 12/08/1992 | US5170436 Acoustic speaker system |
| 12/08/1992 | US5170435 Waveguide electroacoustical transducing |
| 12/08/1992 | US5169104 Speaker stand |
| 12/08/1992 | CA2069576A1 Portable sound system |
| 12/08/1992 | CA1311294C High sensibility tubular piezoelectrical sensor |
| 12/03/1992 | DE4117694A1 Musical therapy device for disabled - uses sound box with loudspeaker in its top surface |
| 12/03/1992 | DE4117607A1 Loudspeaker unit with digitally controlled transfer function - has individual loudspeakers incorporated in walls of common driver chamber, radiating to common point, with sound emitted through aperture in chamber |
| 12/03/1992 | DE4117598A1 Telephone with slim casing and loudspeaker - has loudspeaker compartment forming two-cavity resonance system in telephone housing, with tuned frequency characteristics for ringing tone generation and hands-free operation |
| 12/02/1992 | EP0516471A1 Magnetic drive system for loudspeaker |
| 12/01/1992 | US5168527 Miniature speaker variable standoff mount |
| 12/01/1992 | US5168525 Boundary-layer microphone |
| 12/01/1992 | US5167234 Ultrasonic probe having rotary refracting member |
| 11/30/1992 | CA2066122A1 High efficiency low frequency speaker system |
| 11/30/1992 | CA2066121A1 High mass low resonance speaker system |
| 11/25/1992 | CN2123153U Ultrathin speaker |
| 11/24/1992 | US5166984 Loudspeaker |
| 11/24/1992 | US5166982 Horn speaker having a cooling device |
| 11/24/1992 | US5166802 Television receiver with loudspeaker enclosure |
| 11/24/1992 | CA1310739C Broadband omnidirectional electroacoustic transducer |
| 11/19/1992 | DE4116341A1 Loudspeaker system with sound funnel combination - has coaxial structure with diaphragm inserted in centring part for terminal connections |
| 11/19/1992 | DE4110508C1 Loudspeaker holder for appts. sound wall coping with small area - includes sprung element pivotably mounted on housing base achieving firm yet pliable coupling to shutter of upper part of housing |
| 11/18/1992 | CN2122456U Combined vibrating board loudspeaker having multiple exciting source |
| 11/17/1992 | US5164987 Personal stereo speaker assembly |
| 11/17/1992 | US5164984 Hands-free telephone assembly |
| 11/17/1992 | US5164549 Sonic wave generator |
| 11/17/1992 | US5163747 Desk lamp stereo output device incorporated thereto |
| 11/17/1992 | US5163447 Force-sensitive, sound-playing condom |
| 11/11/1992 | CN2121779U Loudspeaker |
| 11/11/1992 | CN2121778U Detachable dual telephone transmitter |