Method and system for automatic brokered transactions
The present invention provides a method and system for brokering a transaction between a plurality of users of wireless communication devices. The method and system include enabling a plurality of wir... Read More
Inventors: Cato, Robert Thomas; Do, Phuc Ky; Maximilien, Eugene Michael;, Assignee: International Business Machines Corporation (Armonk, NY) |
Method for assigning encryption keys
The invention includes a computer system for undertaking the inventive logic set forth herein. The invention can also be embodied in a computer program product that stores the present logic and that c... Read More
Inventors: Fagin, Ronald; Lotspiech, Jeffrey Bruce; Megiddo, Nimrod; Naor, Dalit; Naor, Simeon;, Assignee: International Business Machines Corporation (Armonk, NY) |
Optically coupled headset and microphone
An electrical coupling such as conductive wires, however, may introduce interference that degrades the audio signals. External radio-frequency ("RF") sources may induce interference into an electrical... Read More
Inventors: DeNap, Frank A.; Roscoe, Timothy; Evans, Arvid;, Assignee: Sprint Spectrum L.P. (Overland Park, KS) |
Method of synthesizing a three dimensional sound-field
What is claimed is: 1. A method of synthesizing a three dimensional sound-field using a system including a pair of front loudspeakers arranged in front of a preferred position for a listener and a pai... Read More
Inventors: Clemow, Richard David;, Assignee: Central Research Laboratories Limited (Hayes, GB) |
Sound reproduction equipment and method for reducing the level of acoustical reflections in a room
It is an object of the present invention to provide an entirely novel method that in a simple manner is capable of reducing the disturbing low-frequency acoustic reflections otherwise occurring in a l... Read More
Inventors: Makivirta, Aki; Varla, Ari;, Assignee: Genelec Oy (Iisalmi, FI) |
Loudspeaker array for enlarged sweet spot
OF PREFERRED EMBODIMENT FIG. 2 is a generalized block diagram of a specific embodiment of an audio reproduction system 10 according to an illustrated embodiment of the invention. The audio system 10 ... Read More
Inventors: Bauck, Jerald L.;, Assignee: |
Audio signal processing
1. A method for processing a single channel audio signal to provide a plurality of audio-channel signals, comprising: separating said single channel audio signal into a first separated signal characte... Read More
Inventors: Aylward, J. Richard;, Assignee: Bose Corporation (Framingham, MA) |
Systems and methods for interference-suppression with directional sensing patterns
One form of the present invention includes a unique signal processing technique using two or more detectors. Other forms include unique devices and methods for processing signals. A further embodiment... Read More
Inventors: Feng, Albert S.; Lockwood, Michael E.; Jones, Douglas L.; Bilger, legal representative, Carolyn J.; Lansing, Charissa R.; O'Brien, William D.; Wheeler, Bruce C.; Bilger, deceased, Robert C.;, Assignee: Board of Trustees for the University of Illinois (Urbana, IL) |
Method for producing customized cosmetic and pharmaceutical formulations on demand
A method and system for selecting and producing a customized cosmetic or pharmaceutical formulation is disclosed below. The system can be implemented in an Internet based system or a stand-alone versi... Read More
Inventors: Wilmott, James M.; Aust, Duncan T.; Crawford, Timothy K.;, Assignee: Lab21, Inc. (New York, NY) |
Method for inharmonic tone generation using a coupled mode digital filter
A block diagram of a preferred embodiment of the invention is shown in FIG. 5. It includes a collection of m first order allpass (FOAP) filters 28(1), 28(2), . . . , 28(m) and a collection of m corre... Read More
Inventors: Van Duyne, Scott A.;, Assignee: Stanford University (Stanford, CA) |
Method and apparatus for decorrelating audio signals
A dynamic decorrelator for surround sound signals is disclosed. In one embodiment, a mono detection circuit is used to detect the extent to which a left rear surround input signal and a right rear sur... Read More
Inventors: Davis, Stephen A.; Walsh, Martin; Berners, David;, Assignee: |
Sound capturing method and device
What is claimed is: 1. A sound capturing device, comprising: a body portion geometrically configured to simulate the acoustic properties of a human head and torso; a first microphone coupled to the bo... Read More
Inventors: Magyari, Douglas Peter; Magyari, David Keith;, Assignee: |
Prepolymerization of monomer compositions containing diethylene glycol bis(allyl carbonate)
We claim: 1. A process for the production of ophthalmic lenses, which comprises: prepolymerizing a composition containing diethylene glycol bis(allyl carbonate) and up to 40% by weight of a vinyl este... Read More
Inventors: Ezrielev, Robert I.; Kamen, Melvin E.; Petcen, Donald H.;, Assignee: Coburn Optical Industries, Inc. (Tulsa, OK) |
Process and apparatus for eliminating loudspeaker interference from microphone signals
It is the object underlying the present invention to effectively and efficiently eliminate loudspeaker interference from the microphone signal used for voice input. This object is attained by the meas... Read More
Inventors: Ruwisch, Dietmar;, Assignee: |
Method of reproducing sound
In view of these circumstances, an object of the present invention is to provide a sound reproducing method and an audio signal processing apparatus which make it possible to solve the problem of the ... Read More
Inventors: Nakano, Kenji; Kanai, Takashi; Fujishita, Kaneaki;, Assignee: Sony Corporation (Tokyo, JP) |
Vehicle audio system
OF THE DRAWINGS The vehicle audio system shown schematically in FIG. 1 contains an audio data bus 11 in a ring structure (e.g., in the form of a MOST ring bus), which is used to connect an audio cent... Read More
Inventors: Albus, Rainer; Bauer, Adel; Niemczyk, Norbert;, Assignee: DaimlerChrysler AG (Stuttgart, DE) |
Electro-acoustic transducer and electronic device
An object of the present invention is to realize an electro-acoustic transducer that a driving force generating in a drive coil is increased and is made symmetric relative to the direction of vibratio... Read More
Inventors: Usuki, Sawako; Saiki, Shuji;, Assignee: Matsushita Electric Industrial Co., Ltd. (Kadoma, JP) |
Remote automatic volume control apparatus
The present invention consists of an automatic remote control device and method which compensates for ambient, environmental noise changes and sudden changes in program material volume. The microphone... Read More
Inventors: Konstantinou, Kyriaki; Rajkumar, Ajay; Triolo, Anthony A.;, Assignee: Lucent Technologies Inc. (Murray Hill, NJ) |
Method and apparatus for effecting secure document format conversion
The invention provides a method and apparatus for effecting secure document delivery in any of various document formats. The invention encrypts the document with the public key of a server associated ... Read More
Inventors: Smith, Jeffrey C.;, Assignee: Tumbleweed Communications Corp. (Redwood City, CA) |
Telephone instrument and method for altering audible characteristics
It is an object of the present invention to provide a telephone instrument and method for altering a voice signal received from a telephone line to simulate a characteristic of spatial presence. Accor... Read More
Inventors: Knappe, Michael E.; Shelton, Brian R.;, Assignee: Northern Telecom Limited (Montreal, CA) |
Method and device for cancelling stereophonic echo with frequency domain filtering
Accordingly, the invention proposes a method as outlined above, further comprising computing a spectral energy P.sub.11 (f) of the first input signal, a spectral energy P.sub.22 (f) of the second inpu... Read More
Inventors: Berthault, Frederic; Capman, Fran.cedilla.ois;, Assignee: Matra Nortel Communications (Quimper, FR) |
Filterbank structure and method for filtering and separating an information signal into different bands, particularly for audio signal in hearing aids
We claim: 1. An oversampled filterbank for filtering an information signal, the filterbank having a filterbank structure comprising a filter means defining a filter bandwidth, said filter means filter... Read More
Inventors: Brennan, Robert; Schneider, Anthony Todd;, Assignee: dspfactory Ltd. (Waterloo, CA) |
Method and apparatus for clock synchronization using quantum mechanical non-locality effects
Based on the above and foregoing, it can be appreciated that there presently exists a need in the art for a clock synchronization method and corresponding apparatus therefor which overcomes the above-... Read More
Inventors: Parks, Allen D.; Balchin, Gregory A.; Spence, Scott E.;, Assignee: The United States of America as represented by the Secretary of the Navy (Washington, DC) |
Method and apparatus for the modeling and synthesis of harmonic distortion
Accordingly, several objects and advantages of my invention are to provide a distortion modeling and synthesis method whereby analog audio distortion devices are accurately emulated using digital tech... Read More
Inventors: Jackson, Douglas L.;, Assignee: |
Frequency dependent excursion limiter
OF THE ILLUSTRATED EMBODIMENT Referring now to the drawings, FIGS. 1 and 2 illustrate a technique for measuring the maximum safe peak voltage of a loudspeaker transducer within its enclosure in order... Read More
Inventors: Kohut, Paul;, Assignee: Meyer Sound Laboratories, Incorporated (Berkeley, CA) |
Chopper-stabilized operational transconductance amplifier
The FIG. 1 chopper-stabilized operational transconductance amplifier is constructed in COMOS technology on p-type silicon substrate electrically connected to a supply rail 11 shown as being at ground... Read More
Inventors: Milkovic, Miran; Regenold, David R.;, Assignee: General Electric Company (Schenectady, NY) |
Scrambling type method and apparatus for video transmission/receipt
It is therefore an object of the present invention to provide a scrambling type video transmitting/receiving method feasible for digital TV broadcasting and urging unauthorized persons to enjoy comple... Read More
Inventors: Itoi, Satoshi;, Assignee: NEC Corporation (Tokyo, JP) |
Control circuit for a matrixed four channel audio reproducing system
The present invention pertains to a control circuit for use in an audio reproducing system having a plurality of speakers driven by signals from four channels, which signals are derived from a two cha... Read More
Inventors: Gay, Michael J.;, Assignee: Motorola, Inc. (Chicago, IL) |
Apparatus and method for equalizing a soundfield
A preferred embodiment of the present invention in its first aspect comprises apparatus for equalizing a soundfield. The apparatus comprises an amplifier and a gain control circuit for selectively adj... Read More
Inventors: Rimkeit, Eugene; Schomburg, Richard;, Assignee: |
Fully differential voltage controlled operational transconductance amplifier
The invention is directed to a simple, reliable, inexpensive, operational transconductance amplifier having both a differential input and a differential output, that substantially reduces control feed... Read More
Inventors: Bowers, Derek F.; Waller, Jr., James K.;, Assignee: |
Audio Signal Processing 
