产生alpha稳定噪声,STBLRND alpha-stable random number generator.% R = STBLRND(ALPHA,BETA,GAMMA,DELTA) draws a sample from the Levy % alpha-stable distribution with characteristic exponent ALPHA, % skewness BETA, scale parameter GAMMA and location parameter DELTA.% ALPHA,BETA,GAMMA and DELTA must be scalars which fall in the following
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