Method of formation of channels for a sonar, in particular for a towed-array sonar
To reduce the number of signals thus transmitted from the vehicle to the towing ship, the present invention proposes a method according to claim 1.... Read More
Inventors: Gulli, Christian; Le Gall, Jean; Grall, Georges;, Assignee: Thomson-CSF (Puteaux, FR) |
FM stereo demodulating device
The present invention relates to an FM stereo demodulating circuit which employs a double balanced multiplier together with means for automatically switching the operational mode of the multiplier bet... Read More
Inventors: Numata, Tatsuo; Yokoyama, Susumu;, Assignee: Pioneer Electronic Corporation (Tokyo, JP) |
Compensation network for loudspeakers
What is claimed is: 1. A system for extending and smoothing base response of a loudspeaker which has an impedance characteristic in the low base frequency range exhibiting a first impedance peak at a ... Read More
Inventors: Strohbeen, John;, Assignee: |
Recording device and video device using the same
An object of the present invention is to realize a recording device which is designed to record sounds without caring wind pressures. Another object of the present invention is to realize a recording ... Read More
Inventors: Maeda, Hiroyuki;, Assignee: Rohm Co., Ltd. (Kyoto, JP) |
Frequency response control circuit apparatus
In FIG. 1, an input signal is applied on lead 10 to the base of a PNP transistor generally designated as 12 having its collector connected through a resistor 14 to a negative power source 16 and its ... Read More
Inventors: Cunningham, Vernon R.;, Assignee: Rockwell International Corporation (El Segundo, CA) |
Crossover network for a multi-element electrostatic loudspeaker system
The present invention relates to an electrostatic speaker system having a plurality of driver elements which are designed to operate over different audio frequency ranges, and more specifically, to an... Read More
Inventors: Elliott, Douglas M.; Wiggins, Alpha M.;, Assignee: Koss Corporation (Milwaukee, WI) |
Crossover network for optimizing efficiency and improving response of loudspeaker system
Having described my invention, I claim: 1. In a loudspeaker system having low, midrange, and high frequency loudspeakers and an LC crossover network, wherein at least one of said loudspeakers is less ... Read More
Inventors: Klipsch, Paul W.;, Assignee: Klipsch and Associates, Inc. (Hope, AR) |
Design of crossover network for high fidelity speaker system
What is claimed is: 1. A high fidelity speaker system in combination with a filter network for coupling an audio amplifier to said speaker system for generating high fidelity signals over a predetermi... Read More
Inventors: Liontonia, Harry D.;, Assignee: |
Speaker system
The present invention has been developed in order to remove the above mentioned drawbacks inherent to the conventional speaker system. It is, therefore, a primary object of the present invention to pr... Read More
Inventors: Tanaka, Mitsuaki; Suzuki, Hidetsugu;, Assignee: Victor Company of Japan, Limited (Yokohama, JP) |
Speaker distortion compensator
Methods and systems in accordance with the invention nullify or substantially eliminate the effects of spurious emanations from simple source transducers that are excited with complex waves. The spuri... Read More
Inventors: Cowans, Kenneth W.; Bennett, M. Owen;, Assignee: |
Resistively damped loudspeaker system
In accordance with the invention, provision is made for electrical damping of the coils, capacitors and loudspeaker drive units of loudspeaker systems and more particularly, for resistive damping of t... Read More
Inventors: Watkins, William H.;, Assignee: |
Audio system with amplifier and signal device
The present invention provides a sound system which is particularly adapted for use with such an unperforated movie screen. The system includes a bass speaker unit and a mid-to-high or upper frequency... Read More
Inventors: Jacobson, Larry L.; Patronis, Jr., Eugene T.;, Assignee: |
Correction circuit and method for improving the transient behavior of a two-way loudspeaker system
OF THE ILLUSTRATED EMBODIMENT Described herein are the transducers, correction circuits, a crossover circuit and cabinet geometry for a multi-way loudspeaker system; also described are methods for in... Read More
Inventors: Meyer, John D.; Kohut, Paul;, Assignee: Meyer Sound Laboratories Incorporated (Berkeley, CA) |
Loudspeaker system
These and additional objects are accomplished by improvements in a loudspeaker system employing transmission-line concepts. According to one aspect of the invention, the loudspeaker system comprises a... Read More
Inventors: Steuben, Richard;, Assignee: Steuben; Richard (Sacramento, CA) |
Correction circuit and method for improving the transient behavior of a two-way loudspeaker system
OF THE ILLUSTRATED EMBODIMENT Described herein are the transducers, correction circuits, a crossover circuit and cabinet geometry for a multi-way loudspeaker system; also described are methods for in... Read More
Inventors: Meyer, John D.; Kohut, Paul;, Assignee: Meyer Sound Laboratories Incorporated (Berkeley, CA) |
Hanging, positionable, speaker enclosure
OF THE INVENTION The above described drawing figure illustrates the invention, an enclosed audio device for cooperative mounting to a ceiling structure 10 in a downwardly extending orientation for pr... Read More
Inventors: Van Gieson, David Charles;, Assignee: |
Digital duplex transmission system
We claim: 1. A digital duplex transmission system comprising: two terminals interconnected by a 2-wire transmission line; first means disposed in one of said terminals coupled to said line for transmi... Read More
Inventors: Howells, George A.; Murray, James A.; Woodman, Douglas E.;, Assignee: International Standard Electric Corporation (New York, NY) |
Extended response dynamic noise reduction system
The block diagram of the preferred dynamic noise reduction system is illustrated in FIG. 1. The system includes an input buffer 10 through which the input signal E.sub.I is fed to a compressor 20. Th... Read More
Inventors: Waller, Jr., James;, Assignee: |
Distortion-cancellation circuit for audio peak limiting
I claim: 1. In an audio peak limiting apparatus, an improvement for reducing distortion comprising: a clipper coupled to receive an input audio signal; a differencing means coupled to receive said inp... Read More
Inventors: Orban, Robert A.;, Assignee: AKG Acoustics, Inc. (San Francisco, CA) |
Level control circuit for low and medium sound
It is an object of the present invention to provide a level control circuit for low and medium sound which detects a peak value of a low and medium sound signal and controls automatically an output ga... Read More
Inventors: Back, Dong-Cherl;, Assignee: SamSung Electronics Co., Ltd. (Suwon, KR) |
Multi-signal processor synchronized system
We claim: 1. A multiprocessor system comprising: a plurality of signal processors each adapted to perform at least part of a signal processing operation for one of a plurality of different signal sour... Read More
Inventors: Blanc, Alain; Jeanniot, Patrick; Spalmacin-Roma, Sylvie;, Assignee: International Business Machines Corp. (Armonk, NY) |
Electroacoustic piezoelectric transducers
We claim: 1. An electroacoustic piezoelectric transducer including a mechanically stretched vibrating membrane composed of a piezoelectric polymer sheet interposed between two metallic electrodes, one... Read More
Inventors: Lewiner, Jacques; Hennion, Claude;, Assignee: |
Stereoscopic video display system
Accordingly, it is a general object of this invention to provide an improved stereoscopic video display system. It is an object of this invention to provide a stereoscopic video display system in whic... Read More
Inventors: Nishikawa, Susumu;, Assignee: Sony Corporation (Tokyo, JP) |
Endoscope automatic light control apparatus and endoscope apparatus making use of the same
An object of the present invention is to provide an endoscope automatic light control apparatus with an automatic light control means and an automatic gain control means is able to select an appropria... Read More
Inventors: Sasagawa, Katsuyoshi; Uehara, Masao; Uchikubo, Akinobu; Saito, Katsuyuki; Kanno, Masahide; Sasaki, Masahiko; Nakagawa, Takehiro; Hasegawa, Jun; Yamashita, Shinji;, Assignee: Olympus Optical Co., Ltd. (Tokyo, JP) |
Lockable cover for push button telephones
What I claim as new and desire to secure by Letters Patent is: 1. A lockable cover device for push button telephones comprising a base member, means adapted to removably secure said base member to the... Read More
Inventors: Richter, Julian;, Assignee: |
Fragrance device
Accordingly, it is an object of this invention to provide an improved, battery operated fragrance device which is actuated upon the energization of an artificial light source and which is deactivated ... Read More
Inventors: Baker, Richard I.; Wegrzyn, Richard J.; Szymansky, Edward;, Assignee: Remington Products, Inc. (Bridgeport, CT) |
Earphone
The present invention provides an earphone including a speaker unit and a case in which the speaker unit is mounted. The earphone of the invention is attachable to a cavity of the conha defined betwee... Read More
Inventors: Yoshimi, Toshikazu;, Assignee: Pioneer Electronic Corporation (Tokyo, JP) |
Piezoelectric polymeric film balloon speaker
Underwater acoustic transducers employing polymeric piezoelectric film materials are known. In British patent No. 2,120,902, a shell of PVDF material is provided with the usual conductive coatings on ... Read More
Inventors: Radice, Peter F.;, Assignee: Pennwalt Corporation (Philadelphia, PA) |
Piezoelectric saddle for musical instruments and method of making same
It is therefore an object of the present invention to provide for a novel and improved electromechanical transducer which defines a unitary part of a saddle for stringed instruments. Another object of... Read More
Inventors: Baggs, Lloyd R.;, Assignee: |
Ultrasonic transmitting and receiving device
We claim: 1. An ultrasonic transmitting and receiving device comprising: a plurality of terminals for receiving and delivering electric signals; a bimorph vibrator including two piezoelectric elements... Read More
Inventors: Yasuda, Eturo; Akita, Shigeyuki; Kodera, Masao;, Assignee: Nippon Soken, Inc. (Nishio, JP) |
Audio Signal Processing 
