Abstract: An auscultatory sound signal from at least one auscultatory sound-or-vibration sensor is filtered with a high-pass filter and then segmented into a plurality of associated heart cycle segments responsive to associated R-peak locations of an electrographic envelope signal representing an envelope response to an even power of an associated electrographic signal from an ECG sensor. A representation an envelope responsive to an even power of said auscultatory sound signal within said at least one heart cycle is locally modeled about at least a second peak to provide for locating the start of diastole of said at least one heart cycle.

Abstract: An auscultatory sound-or-vibration sensor electronic test signal applied to a sound generator generates an acoustic sound signal, responsive to which an auscultatory sound-or-vibration sensor in proximity to the sound generator generates a corresponding auscultatory sound signal. The auscultatory sound-or-vibration sensor electronic test signal incorporates a plurality of frequency components, each frequency component of which incorporates an integral number of wavelengths and is terminated following a duration of time corresponding to the integral number of wavelengths after that frequency component is applied to the corresponding sound generator. A determination of whether or not the auscultatory sound-or-vibration sensor is functioning properly is made responsive to an analysis of a Fourier Transform of the auscultatory sound signal.

Abstract: An auscultatory sound signal from at least one auscultatory sound-or-vibration sensor is filtered with a high-pass filter and then segmented into a plurality of associated heart cycle segments responsive to associated R-peak locations of an electrographic envelope signal representing an envelope response to an even power of an associated electrographic signal from an ECG sensor. A representation an envelope responsive to an even power of said auscultatory sound signal within said at least one heart cycle is locally modeled about at least a second peak to provide for locating the start of diastole of said at least one heart cycle.

Abstract: A method of insulating an electrical switch/outlet/fixture box installed in an exterior wall comprising a plurality of vertically extending studs, a first insulating material disposed between the plurality of vertically extending studs, a water vapor barrier extending over the first insulating material, furring extending horizontally over the first insulating material and a finishing panel attached to the furring, using an insulated box, the method comprising the steps of making an opening in the water vapor barrier adjacent to one of the plurality of vertically extending studs; introducing the insulated box into the vapor barrier opening; introducing the electrical switch/outlet/fixture box into the insulated box; and attaching the electrical switch/outlet/fixture box and the insulated box to the one of the plurality of vertically extending studs.

Abstract: An auscultatory sound signal from at least one auscultatory sound-or-vibration sensor is segmented into a plurality of associated heart cycle segments responsive to associated R-peak locations of an electrographic envelope signal representing an envelope response to an even power of an associated electrographic signal from an ECG sensor. A representation an envelope responsive to an even power of said auscultatory sound signal within said at least one heart cycle is locally modeled about at least a second peak to provide for locating the start of diastole of said at least one heart cycle.

Abstract: At least one of at least one data-dependent scale factor or at least one data-dependent detection threshold is determined responsive to at least one block of time-series data of an auscultatory-sound signal generated by an auscultatory-sound sensor operatively coupled to a portion of the skin of a test-subject, wherein the at least one data-dependent scale factor or at least one data-dependent detection threshold provides a measure of a range of values of the at least one block of time-series data in relation to a predetermined metric, and is used to determine whether or not the auscultatory-sound sensor is either debonded or detached from the skin of the test-subject.

Abstract: An auscultatory sound-or-vibration sensor electronic test signal applied to a sound generator generates an acoustic sound signal, responsive to which an auscultatory sound-or-vibration sensor in proximity to the sound generator generates a corresponding auscultatory sound signal. The auscultatory sound-or-vibration sensor electronic test signal incorporates a plurality of frequency components, each frequency component of which incorporates an integral number of wavelengths and is terminated following a duration of time corresponding to the integral number of wavelengths after that frequency component is applied to the corresponding sound generator. A determination of whether or not the auscultatory sound-or-vibration sensor is functioning properly is made responsive to an analysis of a Fourier Transform of the auscultatory sound signal.

Abstract: At least one sound generator operatively coupleable to a corresponding at least one auscultatory sound-or-vibration sensor provides for generating a corresponding at least one sound signal that is applied to the corresponding at least one auscultatory sound-or-vibration sensor.

Abstract: An auscultatory sound signal acquired by a recording module is coupled through a high-pass filter having a cut-off frequency in the range of 3 to 15 Hz and subsequently filtered with a low-pass filter, and optionally subject to variable-gain amplification under external control—via a USB or wireless interface—of an associated docking system, responsive to the resulting processed auscultatory sound signal.

Abstract: An auscultatory sound signal acquired by a recording module is coupled through a high-pass filter having a cut-off frequency in the range of 3 to 15 Hz and subsequently filtered with a low-pass filter. The high-pass filter incorporates a pair of high-pass filter input circuits having a corresponding pair input terminals across which the auscultatory sound signal is operatively coupled, wherein each high-pass filter input circuit is associated with a corresponding input of an electronic differential-input amplifier, for each high-pass filter input circuit, the corresponding input terminal is operatively coupled to a first terminal of a corresponding capacitor, the second terminal of the corresponding capacitor coupled to both the corresponding input of the electronic differential-input amplifier and to a first terminal of a corresponding resistor, and the second terminal of the corresponding resistor is operatively coupled to a circuit ground.

Abstract: An auscultatory sound signal acquired by a recording module is coupled through a high-pass filter having a cut-off frequency in the range of 3 to 15 Hz and subsequently filtered with a low-pass filter, and optionally subject to variable-gain amplification under external control—via a USB or wireless interface—of an associated docking system, responsive to the resulting processed auscultatory sound signal. A sound generator in the docking system generates an associated test signal having an integral number of wavelengths for each of a plurality of frequencies. The test signal is applied to a corresponding auscultatory sound-or-vibration sensor to test the integrity thereof. Resulting sound signals recorded by the recording module are analyzed using a Fourier Transform to determine sensor integrity.

Abstract: A time-series array of noise data is generated from an inverse frequency transform of the product of the frequency spectrum of an auscultatory sound signal with an associated noise filter generated responsive to a cross-correlation of frequency spectra of auscultatory sound signals from adjacent auscultatory sound-or-vibration sensors on the torso of a test subject. Noise power within at least one range of frequencies of average of frequency spectra from a plurality of windows of the time-series array of noise data is compared with a threshold to determine whether or not the associated auscultatory sound-or-vibration sensor is excessively noisy. In one embodiment, the noise filter is generated by subtracting from unity, a unity-normalized cross-correlation of frequency spectra of the auscultatory sound signals, wherein the resulting values are clipped so as to be no less than an associated noise floor.

Abstract: A method for automatically calibrating a system of projectors for displaying images, the method comprising the steps of selectively projecting pixels from a projector onto a projection surface, sensing the pixels as projected across the projection surface deriving a projector/screen mapping based on the selectively projected pixels and the sensed pixels, deriving a pixel correction function based on the projector/screen mapping, storing the pixel correction function by applying a texture map to a mapping mesh inside a graphical pipeline of a graphics processor unit (GPU), applying the pixel correction function to input image pixel data to produce corrected pixel data which corrects at least for misalignment, and driving the projector with the corrected pixel data.

Abstract: A method for automatically calibrating a system of projectors for displaying images, the method comprising the steps of selectively projecting pixels from a projector onto a projection surface, sensing the pixels as projected across the projection surface deriving a projector/screen mapping based on the selectively projected pixels and the sensed pixels, deriving a pixel correction function based on the projector/screen mapping, storing the pixel correction function by applying a texture map to a mapping mesh inside a graphical pipeline of a graphics processor unit (GPU), applying the pixel correction function to input image pixel data to produce corrected pixel data which corrects at least for misalignment, and driving the projector with the corrected pixel data.

Abstract: The present invention is directed to an insulating box for electrical outlets, switches and light fixtures (recessed or not) and a method of use thereof to inhibit air flow and heat loss through or around the electrical outlets, switches or light fixtures.

Abstract: An auscultatory sound signal acquired by a recording module is coupled through a high-pass filter having a cut-off frequency in the range of 3 to 15 Hz and subsequently filtered with a low-pass filter, and optionally subject to variable-gain amplification under external control—via a USB or wireless interface—of an associated docking system, responsive to the resulting processed auscultatory sound signal. A sound generator in the docking system generates an associated test signal having an integral number of wavelengths for each of a plurality of frequencies. The test signal is applied to a corresponding auscultatory sound-or-vibration sensor to test the integrity thereof. Resulting sound signals recorded by the recording module are analyzed using a Fourier Transform to determine sensor integrity.

Abstract: An auscultatory sound signal acquired by a recording module is coupled through a high-pass filter having a cut-off frequency in the range of 3 to 15 Hz and subsequently filtered with a low-pass filter, and optionally subject to variable-gain amplification under external control—via a USB or wireless interface—of an associated docking system, responsive to the resulting processed auscultatory sound signal. A sound generator in the docking system generates an associated test signal having an integral number of wavelengths for each of a plurality of frequencies. The test signal is applied to a corresponding auscultatory sound-or-vibration sensor to test the integrity thereof. Resulting sound signals recorded by the recording module are analyzed using a Fourier Transform to determine sensor integrity.

Abstract: A time-series array of noise data is generated from an inverse frequency transform of the product of the frequency spectrum of an auscultatory sound signal with an associated noise filter generated responsive to a cross-correlation of frequency spectra of auscultatory sound signals from adjacent auscultatory sound-or-vibration sensors on the torso of a test subject. Noise power within at least one range of frequencies of average of frequency spectra from a plurality of windows of the time-series array of noise data is compared with a threshold to determine whether or not the associated auscultatory sound-or-vibration sensor is excessively noisy. In one embodiment, the noise filter is generated by subtracting from unity, a unity-normalized cross-correlation of frequency spectra of the auscultatory sound signals, wherein the resulting values are clipped so as to be no less than an associated noise floor.

Abstract: At least one of at least one data-dependent scale factor or at least one data-dependent detection threshold is determined responsive to at least one block of time-series data of an auscultatory-sound signal generated by an auscultatory-sound sensor operatively coupled to a portion of the skin of a test-subject, wherein the at least one data-dependent scale factor or at least one data-dependent detection threshold provides a measure of a range of values of the at least one block of time-series data in relation to a predetermined metric, and is used to determine whether or not the auscultatory-sound sensor is either debonded or detached from the skin of the test-subject.

Abstract: A powered retractable motorcycle stand is disclosed having a stationary upper assembly mounted to a motorcycle and a moving lower assembly for ground contact. The stationary assembly includes a horizontal driven shaft coupled to an electric motor coupled. Gear reduction means transfers torque from the horizontal shaft to a vertical screw shaft that extends to a ground contact position and retracts into a protective housing. The vertical screw shaft is pinned so that it does not rotate and is restricted to linear movement. A safety device to prevent operation of the motorcycle while the stand is engaged is included. Motorcycle anti-theft means are also included.