How to Compute FFT and Plot Frequency Spectrum in Python using Numpy and Matplotlib

In this video, I demonstrated how to compute Fast Fourier Transform (FFT) in Python using the Numpy fft function. Plotting the frequency spectrum using matplotlib is also shown. It would be great if you can give me some feedbacks. Thanks for watching!

[MrELMOSAFER]

Thank you. The explanation is good and some parts can be understood from it, but the variable names are very confusing and the code cannot be understood if you look at it without the explanation especially for beginners in this field of programing

[eefunhuang]

Thank you! The DC point I think it’s because it doesn’t have the negative or the complex conjugate component to add up the amplitude, so it doesn’t need to double

[arirajuh]

Thank you for the learning steps.

Goal
Construct
Perform or Compute
Plot : Show case of time domain signals

[WACkZerden]

thank You for showing how to perform FFT in Python. this is helping me understand it better

[cdevagiri]

Thank you so much. Very helpful. Now I understand why the magnitude doubles when converting from double-sided spectrum to single sided one

[JJGhostHunters]

Great content! I wish I could find an example of a real time signal with an unknown "frequency" instead of a contrived sine wave signal. With a contrived signal the time divisions are established automatically. Maybe I am missing something.

[whitehackeryoon]

You really help me to finish my thesis haha. Thanks man👨‍💻👨‍💻

[SLguitarGuy]

Very nice❤I hope U'll reach 1 million views for this

[raspicc]

Me sirvió bastante, muchísimas gracias saludos desde Perú.

[davidsalazar]

Thank you so much ! Easy to understand and aplicate !

[xcpptff]

Awesome teaching thank you, but I do not understand why you use (N-1)*tstep in time step instead of (N) * tstep?

[cerita-ceritanabi]

Hi, I want to analyze an SNR using a CSV file. I want no the signal from 0-200 Hz. In CSV file only has the data on G. What should I do for SNR analysis?

[rishisurya]

For which signal you have done this, how can i insert a audio signal to apply fft algorithm ?

[nuclierrobin]

Is fstep = f0 because fstep = fs/n and n= fs/f0 so that means fstep = fs/fs/f0

[bodireddigarimythilireddy]

Y we are having negative values in time domain signal ..in the final output picture

[nbrbk]

Why the number of samples N = Fs/F0? Is there a mathematical reason behind it or just because you need an upper bound for your intervals?

[Seff]

very usefull. What do you mean with DC component?

[rupeshkadam]

Very informative and great explanation. Can you make full tutorial on Numpy and Scipy?
Because this tutorial I got interest in this.
Thank you!

[kevinshao]

Thanks for the great video! One question at 7:21, what is it to divide by len(time series)? Thank you!

[mohanraj]

Thanks for ur video.Can u try the same without fft inbuilt function.