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Using IDL to make a signal filter [message #61280]

Mon, 14 July 2008 04:08

ICBM0926
Messages: 6
Registered: July 2008

Junior Member

I have an 1D vector data in IDL from an analytical laser formula which
contains 2 laser frequencies. I wrote a program trying to filter my 1D
vector and get the waveform of one of the frequencies. I used 1D FFT
and a mask
function(step function). I applied the mask function to the frequency
domain data. I've covered both positive and negative frequencies. I
did inverse 1d FFT to retrieve the signal. I found that
the amplitude of the signal is only half as it should be. Could
anybody tell me what went wrong?

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[Message index]

		Using IDL to make a signal filter By: ICBM0926 on Mon, 14 July 2008 04:08
		Re: Using IDL to make a signal filter By: Wox on Tue, 15 July 2008 02:32
		Re: Using IDL to make a signal filter By: Wox on Mon, 14 July 2008 10:33
		Re: Using IDL to make a signal filter By: Kenneth P. Bowman on Mon, 14 July 2008 08:06

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