How to reduce the no of iterations to save the compuating time?

Dear All, Hope you are fine and doing well in this pandemic. I am working on a FORTRAN program, where I need to sum the Gaussian functions over time. I have observed that my computing time is...

05 January 2021 3,059 3 View

Why there are multiple spikes around 50Hz (Power Interference) in frequency domain (fft)?

I am working on a project related to sEMG classification. In order to process the signal, I am trying to filter the signal, especially power interference. The signal is acquired from Delsys...

07 December 2020 9,745 10 View

No title

17 September 2020 4,693 4 View

Which type of resistor is used for high frequency applications?

This project is related to transient states. I want to study the behaviour of a circuit (like a current source) by suddenly increasing the resistance from one value (5 ohms) to another (10...

07 September 2020 6,665 28 View

Is it mathematically possible for a duplicated signal to result in energy in higher order FFT bins?

02 September 2020 6,311 2 View

Can someone please explain to me how to interprete negative power values coming from Fast Fourier Transformation?

We conducted a 32-channel EEG and used FFT to calculate each frequency's Power-Value. Some of them are negative and I don't know how to interprete those im comparison to positive Power-values.

31 July 2020 6,943 3 View

Have anyone ever worked with Time varying filter-empirical mode decomposition(tvf-emd) codes in Matlab?

I need to decompose a signal on Matlab but I ended up having IMFs that with FFT instead of having one peak it shows several. Does anyone know how to decompose a signal with this method? I'd be...

29 July 2020 4,973 1 View

What's wrong with my FFT Matlab Code?

I have prepared Matlab code (FFT and PSD) for frequency domain analysis of Quarter car passive suspension (Simulink Model Attached). The two Natural Frequencies of this 2DOF model are 3 Hz and 20...

29 February 2020 8,805 6 View

Are my Matlab Codes of FFT and PSD for Passive Suspension Simulink Model Response Right ?

I have prepared Matlab code (FFT and PSD) for frequency domain analysis of Quarter car passive suspension (Simulink Model Attached). The two Natural Frequencies of this 2DOF model are 3 Hz and 20...

27 February 2020 6,928 5 View

How to get Shooting and Bouncing Rays file to Frequency Components?

Hi, I am working with CST A-Solver. It provides xxx.bix file for all the excitation rays. Since the antenna source was used for a particular frequency, I want to get that frequency components from...

23 February 2020 1,462 1 View