fft of set of data points in csv file

1 次查看（过去 30 天）
Shyam
Shyam 2015-10-16
评论： Geoff Hayes 2015-10-17
I want to find the frequency components of a set of data points in a .csv file. There are 50k points sampled at 2e-5 interval.
I especially want to see subharmonic oscillations (fundamental is 50Hz)
Thanks in advance

请先登录，再回答此问题。

回答（1 个）

Geoff Hayes
Geoff Hayes 2015-10-16
Shyam - use cvsread to read this one second's worth of data from the file and to store it in an array. Then compute the FFT using fft on that data.
  2 个评论
Shyam
Shyam 2015-10-17
I did the same, but i am not able to see the frequency spectrum. Especially, i am interested in subharmonic components
Geoff Hayes
Geoff Hayes 2015-10-17
Please show us what code you have written to do this, and perhaps include the data so that we can try it out too.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Fourier Analysis and Filtering 的更多信息

标签

产品

Community Treasure Hunt

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

Start Hunting!

Translated by