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A Pieracci - One of the best experts on this subject based on the ideXlab platform.
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some useful formulae for monte carlo simulations relating to the weibull and to the exponential probability distribution functions
Fatigue & Fracture of Engineering Materials & Structures, 1997Co-Authors: A PieracciAbstract:— This paper develops some useful formulae relating the estimated and the actual values of the parameters of the Weibull and of the Exponential Probability Distribution functions. These formulae simplify the calculations for Monte Carlo simulations executed for the estimation of some reference statistics, for instance, the reliability function. The reduction of the calculation is possible because of the reduction of the possible values that the parameters of the random numbers generating function should assume. In some cases of the reliability function, only one Monte Carlo simulation is necessary for a given data Sample Amplitude. An explanation is made of the use of these formulae when estimating the reliability function.
Byeonggwan Iem - One of the best experts on this subject based on the ideXlab platform.
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a nonuniform sampling technique based on inflection point detection and its application to speech coding
Journal of the Acoustical Society of America, 2014Co-Authors: Byeonggwan IemAbstract:In order to reduce the data amount, the nonuniform sampling (NUS) method detects Samples of a signal, such as local maxima and minima. To overcome the sparseness problem of the NUS method, an inflection point detection (IPD) method is proposed to Sample a signal nonuniformly. The IPD Samples a signal not only at the local maxima and minima, but also at the inflection points where the slope of the signal changes. To show its usefulness, the IPD is applied to speech coding. The encoder transmits the time instants and Sample Amplitude values of the inflection points. At the receiver, the decoder estimates the Sample Amplitude values at the noninflection points by interpolating the received information. Simulation results show that the IPD method produces 7% mean square error improvement over the NUS method. With a small threshold to detect inflection points, the proposed coding method shows 0.38−8.72 dB signal-to-noise ratio (SNR) and 0.5−1.3 mean opinion score improvement, compared to the continuously varia...
