Linear phase response multi-way speaker system
What is claimed is: 1. A multi-way speaker system comprising a low pass filter, a high pass filter each having a predetermined slope in the stop band and a band pass filter having a single resonance c... Read More
Inventors: Ishii, Shinichiro; Kakao, Kanji; Ueno, Takafumi; Kimura, Jun;, Assignee: Matsushita Electric Industrial Co., Ltd. (Osaka, JA) |
Sound reproducing with remote amplifying transducer
OF PREFERRED EMBODIMENTS With reference now to the drawing and more particularly FIG. 1 thereof, there is shown a block-pictorial diagram of a system according to the invention. A sound signal from a... Read More
Inventors: Bose, Amar G.;, Assignee: Bose Corporation (Framingham, MA) |
Audio signal processing system
What is claimed is: 1. An audio signal processing system of the type for generating ambient effects, said system comprising: at least two channels for respectively transmitting an audio signal to at l... Read More
Inventors: Blackmer, David E.;, Assignee: Kintek, Inc. (Newton, MA) |
Method of improving the acoustics of a hall
I claim: 1. A method of improving the acoustics of a room having a performance area in which sound is generated from a sound source and an audience listening area which is spaced from the performance ... Read More
Inventors: Bolin, Gustav G. A.;, Assignee: |
Cabinet for loudspeaker
It is an object of the present invention to provide a cabinet for a loudspeaker, that does not cause sound including a distortion due to air passing through the duct. According to the present inventio... Read More
Inventors: Yamamoto, Shuji;, Assignee: Bose Corporation (Framingham, MA) |
Loudspeaker structure
I claim: 1. An electro acoustical transducer structure, comprising; (a) a base enclosure of approximately truncated pyramidal shape, having sides, a top and a bottom, (b) at least one woofer disposed ... Read More
Inventors: Wolcott, Henry O.;, Assignee: |
Stereo electroacoustical transducing
What is claimed is: 1. Stereo electroacoustical transducing apparatus comprising, dual-channel woofer means mounted on a baffle inside a dual-channel woofer enclosure divided into first and second sub... Read More
Inventors: Schreiber, William P.;, Assignee: Bose Corporation (Framingham, MA) |
Multiple chamber loudspeaker system
It is an important object of this invention to provide an improved dual-chamber ported loudspeaker system. According to the invention, there is enclosure means for supporting at least one loudspeaker ... Read More
Inventors: Froeschle, Thomas A.;, Assignee: Bose Corporation (Framingham, MA) |
Speaker system
An object of the present invention is to provide a speaker system which can be installed in a narrow space and is adapted to efficiently reproduce low sounds. Another object of the present invention i... Read More
Inventors: Yoshino, Akira;, Assignee: Sanyo Electric Co., Ltd. (Osaka, JP) |
Electric acoustic converter
It is the object of the present invention to provide an electric acoustic converter generative of tones very close in quality factor (Q) to those generated by natural musical instruments. In accordanc... Read More
Inventors: Takeuchi, Akihiko; Suzuki, Shigeo;, Assignee: Yamaha Corporation (JP) |
Mid-range loudspeaker assembly propagating forward and backward sound waves in phase
Accordingly, it is an object of the present invention to provide a loudspeaker which reduces intermodulation distortion. It is another object of the present invention to provide a loudspeaker in which... Read More
Inventors: Hill, Amel L.; Goad, John F.; Goldfarb, Barry;, Assignee: |
Highly directional sound projector and receiver apparatus
We claim: 1. An acoustic apparatus equally suitable for use in both a sound projector mode and a sound receiver mode; wherein the acoustic apparatus comprises an acoustic unit comprising an acoustic d... Read More
Inventors: Bedard, Jr., Alfred J.; Nishiyama, Randall T.;, Assignee: University of Colorado Foundation, Inc. (Boulder, CO); The United States of America as represented by the Secretary of Commerce (Washington, DC) |
Subwoofer speaker system
The present invention includes the recognition of various problems found in previous designs. Previous designs have not satisfactorily provided a small-volume woofer or subwoofer enclosure or a small-... Read More
Inventors: Cockrum, Lloyd W.; Kline, Christopher;, Assignee: Tandy Corporation (Ft. Worth, TX) |
Loudspeaker system and method for disbursing sounds waves
According to the apparatus and method of the present invention, a reflector screen is provided having a concave reflective surface. The reflective surface is generally symmetrical about a horizontal a... Read More
Inventors: Holdaway, Timothy A.;, Assignee: |
Acoustic apparatus
Accordingly, a primary object of the present invention is to provide an acoustic apparatus with a reflector which is capable of amplifying sounds and focusing them so as to be heard only within a spec... Read More
Inventors: Ono, Hiroshi;, Assignee: |
Apparatus and method for examining a body, particularly useful in tomography
An object of the present invention is to provide apparatus and method for examining a body having advantages in the above respects. Another object of the invention is to provide the above advantages i... Read More
Inventors: Blumenthal, Rafael;, Assignee: Elscint Incorporated (Boston, MA) |
Amplifier arrangement for use as a line driver
Referring now to the drawing, FIG. 1 shows an amplifier arrangement 100 having an input point 11 and an output point 12. An output end of a preamplifier 10 is connected to the input point 11. During ... Read More
Inventors: Khorramabadi, Haideh;, Assignee: AT&T Bell Laboratories (Murray Hill, NJ) |
Circuit arrangement for transmitting audio signals
It is an object of the invention to provide simple means enabling said arrangements to be combined and to be operated in combination with one another without any problems. According to the invention t... Read More
Inventors: Dunnebacke, Joachim; Schwantes-Roy, Dirk;, Assignee: U.S. Philips Corporation (New York, NY) |
Overdrive protection clamp scheme for feedback amplifiers
A low-noise, low-distortion clamping scheme is presented that solves the problems noted above. The invention comprises a bootstrapped voltage clamp which is applicable whenever a circuit node must be ... Read More
Inventors: Lam, Khanh; Linder, Lloyd F.; Lo, Carrie C.; Ng, Tim M.; Tran, Kelvin T.;, Assignee: Raytheon Company (El Segundo, CA) |
Method and apparatus for improving the security of an electronic codebook encryption scheme utilizing an offset in the pseudorandom sequence
In accordance with the present invention, an apparatus and method are described for improving the security of an electronic codebook encryption scheme. A transmitter unit is used for encoding or encry... Read More
Inventors: Normile, James O.; Chu, Ke-Chiang;, Assignee: Apple Computer, Inc. (Cupertino, CA) |
Method for shifting the frequency of signals
It is the object of the present invention to avoid such disadvantages and to propose a circuit and a method of the kind mentioned above which enables a frequency transposition in real time in a simple... Read More
Inventors: Ribic, Zlatan;, Assignee: |
Error-correction coding for multilevel transmission system
FIG. 1 shows in simplified block diagram form a transmitter for a multilevel radio transmission system including an aspect of the invention. Accordingly, information bits representative of a level to... Read More
Inventors: Martin, Gary D.;, Assignee: AT&T Bell Laboratories (Murray Hill, NJ) |
Control unit for controlling modem used in receiver
Accordingly, a general object of the present invention is to provide a novel and useful control unit for a modem in which the disadvantages of the aforementioned prior art are eliminated. A more speci... Read More
Inventors: Uchiyama, Hiroki;, Assignee: Ricoh Company, Ltd. (Tokyo, JP) |
Interface conversion modules based upon generalized templates for multiple platform computer systems
FIG. 1 provides a brief, general description of a suitable computing environment in which the invention may be implemented. Hardware and software environments will first be discussed, followed by a d... Read More
Inventors: Bond, Barry; Gershony, Ori; Hastings, David E.; Lew, Jonathan C.; Warwick, Alan M.;, Assignee: Microsoft Corporatrion (Redmond, WA) |
Method and system for logical event management
It is one object of the present invention to provide an improved data processing system. It is another object of the present invention to provide an improved method and system for managing events in a... Read More
Inventors: Chow, ChungHen; Coskun, Nurcan; Patel, Kalpesh Jashbhai; Tate, Bruce Allan;, Assignee: International Business Machines Corporation (Armonk, NY) |
Interface to a programmable logic controller
The present invention provides an interface for accessing, controlling and monitoring a programable logic controller with a network client having a conventional web browser. The present invention incl... Read More
Inventors: Klindt, Charles J.; Baker, Jr., Richard A.;, Assignee: Schneider Automation Inc. (North Andover, MA) |
Video recording apparatus having control means provided therein for independently controlling the writing head and the reading head
It is accordingly a primary object of the present invention to provide a video recording apparatus which does not require much time when repeatedly reproducing the desirable recorded part. In a first ... Read More
Inventors: Sata, Takeo; Iijima, Kenzaburo; Kondo, Katsufumi; Kato, Nobuji;, Assignee: Yamaha Corporation (Hamamatsu, JP) |
HDTV receiver
FIG. 1 presents a high definition television (HDTV) format disclosed in the aforementioned related applications [rel. app. 2] and [rel.app. 3]. In accordance with one aspect of the format there exist... Read More
Inventors: Knaur, Scott C.; Matthews, Kim N.; Netravali, Arun N.; Petajan, Eric D.; Safranek, Robert J.;, Assignee: AT&T Bell Laboratories (Murray Hill, NJ) |
Method of recording and reproducing a video signal with improved quality during variable speed operation
In order to overcome the above problems of the prior art, it is an object of the present invention to provide a method of recording video data capable of reproducing a picture at a variable speed havi... Read More
Inventors: Park, Ku M.;, Assignee: Samsung Electronics Co., Ltd. (JP) |
Optical fiber seal verifying system
OF THE INVENTION An embodiment of the present invention will be described below with reference to the accompanying drawing. An optical fiber seal is used in a form shown in FIG. 5A, and comprises an ... Read More
Inventors: Isogai, Takeshi; Wakahara, Michio; Yamamoto, Youichi;, Assignee: Mitsubishi Heavy Industries, Ltd. (Tokyo, JP) |
Audio Signal Processing 
