Has anybody (successfully) tried to deconvolve a seismic signal (time
series in general) using R and package signal? I have the Matlab routines:

[bb,aa] = zp2tf(zero,pole',gain);
[bb,aa] = bilinear(bb,aa,df);
transfer = freqz(bb,aa,f,df);

But the (apparent) equivalents of R produce quite different results:

ZPG <- Zpg(zero = zero, pole = pole, gain = gain)
B <- bilinear(ZPG, T = 1/df)
transfer <- freqz(h = B, Fs = 1/df, n = f)

In Matlab, one complex vector (transfer) is returned, in R a different
complex vector and a numeric vector are returned. Are the problems in the
specification of zeros and poles (Hz vs. rad/s) or in parameter setting of
freqz()?

Or does anyone know someone who uses R for signal processing?

Best and Thanks,

Micha

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