FFT 관련하여 도와주세요.

[yeers]

FFT 구성중 문제점이 있어서 남깁니다.

 FFT 실행시 0 에 피크점이 찍혀 배열잘라내기로 인덱스 1을 잘라낸 상태입니다.

그런데 dt가 맞지않아서 실제 주파수랑 차이가 많이납니다.

이를 수식으로 어찌 맞췃는데, 정확하지않습니다.

dt 를 웨이브폼만들기로 만들어도 피크점찾아내기 에서는 적용이 안됩니다.

저의 목표는 실제 주파수와 피크점이 찾아낸 주파수를 맞추고 싶습니다.

[dsb@NI]

Google Translate:

I am leaving this because there is a problem while configuring FFT.

When executing FFT, the peak point is marked at 0, so I cut off index 1 by slicing the array.

However, dt is not correct, so there is a big difference from the actual frequency.

I matched this with a formula, but it is not accurate.

Even if dt is created by creating a waveform, it is not applied in finding peak points.

My goal is to match the actual frequency and the frequency found by the peak point.

[dsb@NI]

Rather than paste screenshots, paste code! When you attach a VI, include a VI snippet, reference an example, you give us the chance to run your code and offer directed suggestions. 

[dsb@NI · Accepted solution]

Try this code:

Note: Hanning is the default window for the FFT Spectrum (Mag and Phase) VI.