Patents
Sitemap › G10 - Musical instruments; Acoustics › G10K - Sound-producing devices; methods or devices for protecting against, or for damping, noise or other acoustic waves in general; Acoustics not otherwise provided for › G10K 15 - Acoustics not otherwise provided for
Patents for G10K 15 - Acoustics not otherwise provided for (7,779)
03/1984
03/20/1984US4438525 Reverberation apparatus
03/07/1984EP0101895A2 Reverberation generation method and device for analoqous tone signals
03/06/1984CA1163202A1 Loudspeaker or microphone arrangement having a direction - and frequency-independent behavior
02/1984
02/21/1984US4432299 Impulse noise generator
01/1984
01/31/1984CA1161537A1 Apparatus for producing artificial reverberations
01/18/1984EP0098594A2 A method and apparatus for controlling the sound field in a vehicle cabin or the like
11/1983
11/30/1983EP0095227A1 A method for evaluating the quality of the bond between two members utilizing thermoacoustic microscopy
10/1983
10/05/1983EP0090138A2 Apparatus for the disintegration of concretions in living bodies
09/1983
09/20/1983US4405832 Circuit for distorting an audio signal
09/06/1983US4403202 Surface acoustic wave device and method for producing the same
09/06/1983US4402221 Acoustic suspension system
08/1983
08/23/1983US4399799 Engine control suitable for exhaust gas recirculation control
08/16/1983US4399328 Direction and frequency independent column of electro-acoustic transducers
08/09/1983CA1151559A1 Method and apparatus for sonic separation and analysis of components of a fluid mixture
08/03/1983EP0084737A2 Engine control system suitable for exhaust gas recirculation control
08/02/1983US4396909 Frequency generating circuit
07/1983
07/19/1983US4393708 Acoustic system for material transport
06/1983
06/29/1983EP0082508A1 A calculus disintegrating apparatus
06/08/1983EP0080812A2 Programmable sound circuit for electronic games
04/1983
04/19/1983CA1144866A1 Device for artificial reverberation
04/12/1983US4379409 Apparatus for producing ultrasonic waves in a workpiece
04/06/1983EP0075615A1 Sound field simulation system and method for calibrating same
03/1983
03/01/1983US4375623 Arrangement for the transmission of audio signals
02/1983
02/01/1983US4371748 Device for artificial reverberation
12/1982
12/28/1982US4366346 Artificial reverberation apparatus
11/1982
11/30/1982US4361727 Sound reproducing arrangement for artificial reverberation
11/23/1982CA1136258A1 Device for implosion injection of sound waves in a liquid medium
11/17/1982EP0064593A1 Sheet levitational support
11/16/1982CA1135631A1 Sound reproducing arrangement for artificial reverberation
11/02/1982US4356753 Musical electro magnetic analog synthesizer controlled rocket engine
10/1982
10/26/1982CA1134434A1 Electrical energy conversion system with bilateral switch
10/19/1982CA1133832A1 Artificial reverberation apparatus
10/05/1982US4352954 Artificial reverberation apparatus for audio frequency signals
09/1982
09/21/1982US4350072 Reentrant reverberation generator for an electronic musical instrument
09/14/1982US4349898 Sonic weapon system
09/14/1982US4348903 Electromagnetic ultrasonic apparatus
09/14/1982CA1131564A1 Digital signal mixing apparatus
09/07/1982CA1131315A1 Infrared radiation communication system
08/1982
08/11/1982EP0057506A1 Ultrasonic transducers
08/10/1982US4343221 Acoustic sound generating device
06/1982
06/30/1982EP0055125A1 Apparatus for generating acoustic waves
06/08/1982US4334321 Opto-acoustic transducer and telephone receiver
05/1982
05/26/1982EP0052236A1 Tone generator
05/04/1982CA1123024A1 Riding toy with sound effects
05/04/1982CA1122825A1 Multiplex chime generator
04/1982
04/13/1982CA1121619A1 Circuit means for providing multiple audible signals from an audible tone generator means
03/1982
03/02/1982CA1119024A1 Chime tone audio system utilizing a piezoelectric transducer
02/1982
02/02/1982US4314236 Apparatus for producing a plurality of audio sound effects
01/1982
01/19/1982US4311147 Apparatus for contact-free disintegration of kidney stones or other calculi
12/1981
12/10/1981WO1981003566A1 Artificial reverberation generator
12/01/1981US4303991 Time-modulated delay system
11/1981
11/03/1981US4297885 Adhering an emitter; construction materials
10/1981
10/29/1981WO1981003081A1 Impulse noise generator
10/15/1981WO1981002957A1 Audio echo circuits
10/13/1981US4294328 Device for emitting acoustic waves in a liquid medium by implosion
09/1981
09/15/1981US4290053 Sound effects producer
09/15/1981US4289307 Riding toy with sound effects
09/02/1981EP0034865A2 Arrangement for the transmission of audio signals
09/02/1981EP0034844A1 A direction- and frequency-independent loudspeaker- or microphone-column or a loudspeaker- or microphone-surface
09/01/1981US4287510 Electronic signal generator with periodically varying frequency
08/1981
08/18/1981US4284403 Acoustic levitation and methods for manipulating levitated objects
07/1981
07/28/1981US4280823 Method and apparatus for sonic separation and analysis of components of a fluid mixture
06/1981
06/23/1981US4275268 Mixing apparatus
06/10/1981EP0030219A1 A frequency-matched signal device for persons with impaired hearing
05/1981
05/26/1981US4269067 Method and apparatus for focusing elastic waves converted from thermal energy
05/19/1981US4268717 Time-modulated delay system and improved reverberation simulator using same
05/19/1981US4267732 Acoustic microscope and method
05/12/1981US4267553 Method and apparatus for securing attache cases
05/12/1981US4267551 Multi-mode doll
05/05/1981CA1100341A1 Driver circuit for tone generator
04/1981
04/28/1981US4264883 Reverberation annexation device
04/28/1981US4264882 Electric signal transmission device employing a ferromagnetic amorphous ribbon
04/28/1981CA1100223A1 Fluid operated seismic generator
03/1981
03/25/1981EP0025537A1 Warning signal generator for feeding a pressure chamber loudspeaker
03/17/1981CA1097791A1 Clamped acoustic elastic wave generator
03/11/1981EP0024707A2 Electromagnetic ultrasonic apparatus
03/10/1981US4255782 Electrical energy conversion systems
02/1981
02/24/1981US4252022 Detection, characterization and studying of flaws in work by acoustic imaging
02/10/1981CA1095431A1 Signal processor for controlling low-frequency sound during motion picture film presentations
02/03/1981US4248120 Stringed musical instrument with electrical feedback
01/1981
01/20/1981CA1094173A1 Digitally shaped noise generating system
01/13/1981US4244262 Echo-machine employing low pass filters with a variable cut-off frequency
01/06/1981CA1092819A1 Bicycle accessory
12/1980
12/09/1980CA1091163A1 Sound processing method and apparatus
12/02/1980US4237343 Digital delay/ambience processor
11/1980
11/26/1980EP0019082A1 Method and apparatus for focusing elastic waves
11/18/1980US4234944 Alarm electronic timepiece
10/1980
10/30/1980WO1980002340A1 Sound generating electronic arrangement
10/29/1980EP0018237A1 Sound generating electronic arrangement as well as a model cooker and a doll's house incorporating such an arrangement
10/28/1980CA1088672A1 Apparatus for producing a plurality of audio sound effects
10/21/1980US4228714 Multiplex chime generator
09/1980
09/30/1980US4225859 Method and apparatus for monitoring sound-conducting media
09/30/1980US4225856 Circuit means for providing multiple audible signals from an audible tone generator means
08/1980
08/26/1980US4218921 Method and apparatus for shaping and enhancing acoustical levitation forces
08/12/1980US4216647 Electronic timepiece
07/1980
07/29/1980US4215242 Reverberation system
07/15/1980US4213121 Chime tone audio system utilizing a piezoelectric transducer
06/1980
06/25/1980EP0012262A1 Apparatus and method for acoustically examining a microscopic portion of an object
06/11/1980EP0011713A1 Acoustic signal generator with periodically changing output signal frequency
06/03/1980US4205517 Alarm electronic timepiece
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