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## inverse fourier transform

**From**: |
Heber Farnsworth |

**Subject**: |
inverse fourier transform |

**Date**: |
Wed, 2 Apr 2003 00:45:48 -0600 |

`Some of you will laugh at me for this but I've never done an inverse
``fourier transform. I need to use a probability density function which
``I don't know in closed form but I do have a closed form for it's
``characteristic function (fourier transform). But when I try ifft I get
``something that is complex. I know that this thing is the fourier
``transform of a real density. How do I get a real (not complex) thing
``out of this? Here some things I'm not sure about which may be causing
``my confusion.
`

`1. I'm not sure what range of frequencies to use: [-pi,pi]? something
``else?
`
2. I may not be using fftshift correctly.

`Is there anyone out there that does this a lot that can give me some
``pointers?
`
Heber Farnsworth
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**inverse fourier transform**,
*Heber Farnsworth* **<=**