how to obtain the required point in the obtained fft signal and remove rest of the points in the signal

1 次查看（过去 30 天）

显示更早的评论

Spoorthy S Kumar 2018-2-23

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/384430-how-to-obtain-the-required-point-in-the-obtained-fft-signal-and-remove-rest-of-the-points-in-the-sig

回答： Bhuvnesh Singh 2018-2-26

i got the code till applying fft to the signal

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

回答（2 个）

Abhishek Ballaney 2018-2-26

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/384430-how-to-obtain-the-required-point-in-the-obtained-fft-signal-and-remove-rest-of-the-points-in-the-sig#answer_307134

https://in.mathworks.com/help/signal/ug/find-peaks-in-data.html

https://in.mathworks.com/help/signal/ref/findpeaks.html

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

Bhuvnesh Singh 2018-2-26

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/384430-how-to-obtain-the-required-point-in-the-obtained-fft-signal-and-remove-rest-of-the-points-in-the-sig#answer_307234

As suggested above you can use findpeaks function to find values and locations of local maxima in a set of data.

where function findpeaks(data) returns a vector with the local maxima (peaks) of the input signal vector, data. A local peak is a data sample that is either larger than its two neighboring samples or is equal to Inf. Non-Inf signal endpoints are excluded. If a peak is flat, the function returns only the point with the lowest index.

You can follow the link for more information: https://www.mathworks.com/help/signal/ug/find-peaks-in-data.html

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

类别

Signal Processing Signal Processing Toolbox Measurements and Feature Extraction Descriptive Statistics

在 Help Center 和 File Exchange 中查找有关 Descriptive Statistics 的更多信息

标签

Community Treasure Hunt

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

Translated by