FFT of sine function
5 ビュー (過去 30 日間)
古いコメントを表示
I am trying to plot power of sine function. When I do FFT of sine wave I got two peaks for a single sin function. I don't know understand it. Why do I get two frequency spikes from a simple sin function via FFT? How can I get only one peak for a single sin function?
0 件のコメント
回答 (1 件)
sloppydisk
2018 年 5 月 25 日
You'll get both positive and negative frequencies, see
doc fft
for an example of a single-sided spectrum, i.e. only positive frequencies.
0 件のコメント
参考
カテゴリ
Help Center および File Exchange で Fourier Analysis and Filtering についてさらに検索
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!