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FT of abs(f)

Started by Arnaldo Batista March 16, 2002
Helo there,

Is there a mathematical relationship between the Fourier Transform of a
function and the Fourier Transform of the absolute value of the same
function. I tried to use the fact that abs(f)=sqrt(f^2), but could not reach
a lean mathematical relation...note that f is a function with positive and
negative values.

AB




yaar, there is no mathematical relationship b/w the fourier of a funtion and
fourier of absolute of the function

See the fact that square root and absolute both are not realizable.[ see graph
of sqrt(x(t)) and abs(x(t)) against t ]... or u can say that absolute of x(t) is
irreversible.

We loose information that we cannot get again, so the abs(x(t)) becomes entirly
new function that has no relationship with the prev function

----- Original Message -----
From: Arnaldo Batista
To:
Sent: Sunday, March 17, 2002 12:08 AM
Subject: [matlab] FT of abs(f) Helo there,

Is there a mathematical relationship between the Fourier Transform of a
function and the Fourier Transform of the absolute value of the same
function. I tried to use the fact that abs(f)=sqrt(f^2), but could not reach
a lean mathematical relation...note that f is a function with positive and
negative values.

AB
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