摘要:
A processor and method for extracting or estimating directions of arrival of signals from a received data vector x(t) which has been corrupted by interfering signals and noise is described. The processor extracts signals by forming the scalar product of x(t) and a weight vector which is chosen such that the spectral self-coherence or conjugate spectral self-coherence of the processor output is maximized. The processor estimates the directions of arrival of signals by spectral self-coherence-selective performance surfaces for maxima.
摘要:
A processor and method for extracting a signal s(t) from a signal input vector x(t) which has been corrupted by interfering signals and noise is described. The processor computes an output signal y(t) by forming the scalar product of x(t) and a vector w which is chosen such that the self-coherence or conjugate self-coherence of y(t) is maximized.
摘要:
A bottle closure and opener device for use on a wine bottle including a sleeve having a top side, a bottom side, an outer surface, and an inner surface, the top side having a first opening, the bottom side having a second opening, and the inner surface including inner threads, wherein the internal threads are configured to mate with external threads on a top portion of the wine bottle. A cork having an upper portion positioned within the first opening of the sleeve and extending above the bottle top and a lower portion of the cork positioned within the wine bottle's neck opening to seal a liquid within the wine bottle and to seal oxygen from entering the bottle. During operation, the cork and sleeve combination are configured to be removed from the wine bottle's opening via unscrewing the sleeve from the top portion of the wine bottle.
摘要:
A method and apparatus for active cancellation of vibrational noise produced by a medical instrument in the head of a patient. Vibrations from the instrument, as well as vibrations in the bone structure in the head of the patient, are sensed and processed to generate cancelling noise waves which are then fed into the inner ear through vibrators placed on the head of the patient. An equalizer shapes the magnitude and phase spectrum of the vibrational signal picked up from the drill and delivers the equalized vibrational signals to the patient. An automatic adaptive controller adjusts the equalizer using control signals consisting of vibrations from the bone structure and the drill.
摘要:
An apparatus for removing a cork from a bottle in which an anchor is embedded in the cork and a cork-pulling sleeve is provided for engaging the anchor for removal of the cork. The cork-pulling sleeve includes inner threads that mate with external threads on the neck of the bottle, and rotation of the cork-pulling sleeve in relation to the bottle extracts the cork.
摘要:
A sound environment control apparatus which allows a user, by operating a remote control unit, to selectively suppress any or all of multiple noises in his or her environment, or selectively listen to any of these while suppressing all other sound. One or more "primary" sound detectors are located in the user's sound domain to acquire all sounds that the user desires to hear as well as interfering sounds, and one or more "reference" sound detectors are placed at each interfering sound source that the user may wish to be able to control. Signals from the sound detectors are sent to a central processing unit/multiple sound controller where the interfering sounds are adaptively cancelled from the total audio provided by each primary sound detector or, when enhancement of a particular sound, rather than suppression, is desired, the audio from a reference sound detector is amplified and added to the total sound from the primary sound detector or used to replace the total sound from the primary sound detector. The resultant processed sound is then provided to the user.
摘要:
A method and apparatus for spatial multiplexing of spectrally overlapping communications signals which does not require use of a training signal, computationally intensive direction-finding methods, or antenna calibration is presented. An adaptive antenna array at a base station is used in conjunction with signal processing through self coherence restoral to separate the temporally and spectrally overlapping signals of users that arrive from different specific locations within the locale and to mitigate multipath fading and shadowing at the base station and, by reciprocity, to transmit directively to minimize interfering signals arriving at the mobile (or portable or stationary) units and to mitigate multipath fading and shadowing at the mobile units. The radiation pattern of transmitted signal is matched to the adapted reception pattern of the signal received at the base station.BACKGROUND OF THE INVENTIONThe Government has rights in this invention pursuant to Grant No. MIP-88-12902 awarded by the National Science Foundation.
摘要:
An apparatus for removing a cork from a bottle in which an anchor is embedded in the cork and a cork-pulling sleeve is provided for engaging the anchor for removal of the cork. The cork-pulling sleeve includes inner threads that mate with external threads on the neck of the bottle, and rotation of the cork-pulling sleeve in relation to the bottle extracts the cork.
摘要:
An apparatus for removing a cork from a bottle in which an anchor is embedded in the cork and a cork-pulling handle is provided for engaging the anchor for removal of the cork. The cork-pulling handle can be connected to the anchor by any of several means, and can be stored with the bottle as an integral part of the bottle/capsule/label package or provided separately.
摘要:
An apparatus for removing a cork from a bottle in which an anchor is embedded in the cork and a cork-pulling handle is provided for engaging the anchor for removal of the cork. The cork-pulling handle can be connected to the anchor by any of several means, and can be stored with the bottle as an integral part of the bottle/label package or provided separately.