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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Anti-Spam Code: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by Vesnog[/i] [br]OriginPro8 SR0: Operating System: Win7-64bit Greetings, I am a new user of OriginPro 8 and I want to perform analysis using FFT. I have time domain data and using FFT I transform it into frequency domain data; however when I perform IFFT to the transformed data I do not get the original waveform back. How can I do so? This is very crucial for my analysis, thanks in advance. P.S: I am unfamiliar with the options inside the FFT transform. [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.