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why does invert fft not work?
From: |
macy |
Subject: |
why does invert fft not work? |
Date: |
Wed, 24 Nov 2010 18:26:39 -0800 |
User-agent: |
SquirrelMail/1.4.21 |
why doesn't the invert fft work?
for example:
s=sqrt(2)*cos(2*pi()*[1:1000]/1000);
sn=s+.001*sqrt(1000/2)*randn(1,1000);
b=sqrt(2)*fft(sn)/1000;
invoking
snew=ifft(b);
does NOT reproduce sn or s in any way shape or form!
What is going on?
- why does invert fft not work?,
macy <=