# Fitting Sinusoidal Signal with LsqFit

**URL:** https://discourse.julialang.org/t/fitting-sinusoidal-signal-with-lsqfit/84777
**Category:** General Usage
**Tags:** curve-fitting
**Created:** [July 25, 2022, 9:38pm UTC](https://discourse.julialang.org/t/fitting-sinusoidal-signal-with-lsqfit/84777 "2022-07-25T21:38:06Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![rafael.guerra](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/rafael.guerra/32/216610_2.png) [@rafael.guerra](https://discourse.julialang.org/u/rafael.guerra)
#### Post date: [July 25, 2022, 10:47pm UTC](https://discourse.julialang.org/t/fitting-sinusoidal-signal-with-lsqfit/84777/2 "2022-07-25T22:47:19Z")

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You could use the FFT to obtain a good initial guess of the sinusoidal frequency. See one such [LsqFit example here](https://discourse.julialang.org/t/failed-to-obtain-the-correct-phase/45350/4).

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