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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 vlnew[/i] [br]OriginPro 2017 SR2 b9.4.2.380 Operating System: Win7 Hello! I am analysing a periodic signal, which contains a periodic component, a trend component and noise component. I am only interested in the periodic component, and in particular, I am only interested in determining the period (1/frequency) of this signal. I tried FFT and autocorrelation, but did not succeed. What is the best way to solve this problem? Thanks! [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.