Search Results - "Aase, Sven Ole"

A prefilter equalizer for pulse width modulation by Aase, Sven Ole

“…This article demonstrates the feasibility of pulse-width-modulation (PWM) of discrete time signals in a digital audio amplifier without inducing the nonlinear…”
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Predicting outcome of defibrillation by spectral characterization and nonparametric classification of ventricular fibrillation in patients with out-of-hospital cardiac arrest by EFTESTØL, Trygve, SUNDE, Kjetil, AASE, Sven Ole, HUSØY, John Hakon, STEEN, Petter Andreas

“…In 156 patients with out-of-hospital cardiac arrest of cardiac cause, we analyzed the ability of 4 spectral features of ventricular fibrillation before a total…”
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Volterra Models for Digital PWM and Their Inverses by Chierchie, Fernando, Aase, Sven Ole

“…In an all-digital class-D audio amplifier each signal sample is mapped into a pulse using digital pulse-width-modulation (PWM), and this intrinsically…”
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Semi-algebraic optimization of temperature compensation in a general switch-type negative feedback model of circadian clocks by Aase, Sven Ole, Ruoff, Peter

“…Temperature compensation is an essential property of circadian oscillators which enables them to act as physiological clocks. We have analyzed the temperature…”
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Automatic Identification of Return of Spontaneous Circulation During Cardiopulmonary Resuscitation by Risdal, Martin, Aase, Sven Ole, Kramer-Johansen, Jo, Eftestol, Trygve

“…The main problem during pulse check in out-of-hospital cardiac arrest is the discrimination between normal pulse-generating rhythm (PR) and pulseless…”
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Impedance-Based Ventilation Detection During Cardiopulmonary Resuscitation by Risdal, Martin, Aase, Sven Ole, Stavland, Mette, Eftestol, Trygve

“…It has been suggested to develop automated external defibrillators with the ability to monitor cardiopulmonary resuscitation (CPR) performance online and give…”
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Multi-frame compression: theory and design by Engan, Kjersti, Aase, Sven Ole, Husøy, John Håkon

“…This paper consist of two parts. The first part concerns approximation capabilities in using an overcomplete dictionary, a frame, for block coding. A frame…”
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Feasibility of shock advice analysis during CPR through removal of CPR artefacts from the human ECG by Eilevstjønn, Joar, Eftestøl, Trygve, Aase, Sven Ole, Myklebust, Helge, Husøy, John Håkon, Steen, Petter Andreas

“…Mechanical activity from chest compressions and ventilations during cardiopulmonary resuscitation (CPR) introduces artefact components into the…”
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Removal of cardiopulmonary resuscitation artifacts from human ECG using an efficient matching pursuit-like algorithm by Husoy, J.H., Eilevstjonn, J., Eftestol, T., Aase, S.O., Myklebust, H., Steen, P.A.

“…We present a computationally efficient and numerically robust solution to the problem of removing artifacts due to precordial compressions and ventilations…”
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General design algorithm for sparse frame expansions by Skretting, Karl, Husøy, John Håkon, Aase, Sven Ole

“…Signal expansions using frames may be considered as generalizations of signal representations based on transforms and filter banks. Frames, or dictionaries,…”
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CPR artifact removal from human ECG using optimal multichannel filtering by Aase, S.O., Eftestol, T., Husoy, J.H., Sunde, K., Steen, P.A.

“…The purpose of this study was to assess whether the artifacts presented by precordial compressions during cardiopulmonary resuscitation could be removed from…”
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‘Probability of successful defibrillation’ as a monitor during CPR in out-of-hospital cardiac arrested patients by Eftestøl, Trygve, Sunde, Kjetil, Aase, Sven Ole, Husøy, John Håkon, Steen, Petter Andreas

“…The frequency spectrum of the ECG in ventricular fibrillation (VF) correlates with myocardial perfusion and might predict defibrillation success defined as…”
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Optimized signal expansions for sparse representation by Aase, S.O., Husoy, J.H., Skretting, J.H.H.K., Engan, K.

“…Traditional signal decompositions such as transforms, filterbanks, and wavelets generate signal expansions using the analysis-synthesis setting: the expansion…”
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Multichannel adaptive filtering using an efficient matching pursuit-like algorithm for removal of CPR artifacts in ECG signals by Eilevstjonn, Joar, Husoy, John Hakon, Ejtestol, Trygve, Aase, Sven Ole, Steen, Petter Andreas

“…In this contribution we present a novel algorithm for multichannel adaptive filtering. The algorithm is based on selective update of filter coefficients using…”
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Designing frames for matching pursuit algorithms by Engan, K., Aase, S.O., Husoy, J.H.

“…A technique for designing frames to use with vector selection algorithms, for example matching pursuits (MP), is presented. The design algorithm is iterative…”
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Filter bank design for subband ECG compression by Sven Ole Aase

“…This article considers filter banks for subband coding of discrete time electrocardiogram (ECG) signals. A parallel FIR filter bank is optimized and compared…”
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Design of signal expansions for sparse representation by Aase, S.O., Skretting, K., Husoy, J.H., Engan, K.

“…Traditional signal decompositions generate signal expansions using the analysis-synthesis setting: the expansion coefficients are found by taking the inner…”
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Optimized frame design for a matching pursuit based compression scheme by Engan, Kjersti, Husoy, John Hakon, Aase, Sven Ole, Stavanger, Hogskolen i

“…A technique for designing frames to use with vector selection algorithms, for example Matching Pursuits (MP), is presented along with a novel compression…”
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A simple design of sparse signal representations using overlapping frames by Skretting, K., Husoy, J.H., Aase, S.O.

“…The use of frames and matching pursuits for signal representation are receiving increased attention due to their perceived potential in various signal…”
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Finding sparse representation of quantized frame coefficients using 0-1 integer programming by Ryen, T., Aase, S.O., Husoy, J.H.

“…The use of overcomplete dictionaries, or frames, has received increased attention in low-bit-rate compression. Several vector selection algorithms, such as…”
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