how do i convert time domain signal to frequency domain signal?

2015 12 7
1 个回答
回答已采纳
更新时间：2015 12 8
6 次查看（30 天）

0 个投票

I have a sensor data signal of lenth 4000*1.
It is time domain.
How can i convert it into frquency domain.
Any commands in MAtlab doing this conversion.
Please Help.

请先登录，再回答此问题。

 采纳的回答

Mohammad Abouali
Mohammad Abouali 2015-12-7

0 个投票

fft() is one

4 个评论
显示 2更早的评论 隐藏 2更早的评论

Heartrin
Heartrin 2015-12-7
Hi,
Thanks for your comment.
So you say,
fft(myvalues) will give me the signal in frequency domain right?
Guillaume
Guillaume 2015-12-7
If you don't even know what a Fast Fourier Transform is, why do you even want your signal in the frequency domain?
Heartrin
Heartrin 2015-12-7
编辑：Heartrin 2015-12-7
I knew what FFT is.
i was using transfer functions matrix methods to convert it.
just for clarification i want to make sure that this works correct.
Mohammad Abouali
Mohammad Abouali 2015-12-8
Yes, FFT or Fast Fourier Transform converts the signal from the (usually) time domain to the frequency domain.
ifft() performs the inverse, i.e. moving from freq. domain to time domain (usually).

请先登录，再进行评论。

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Fourier Analysis and Filtering 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by