# Tag Info

Accepted

### Why zero-pad at the end of a signal?

What differences does it make? In one line - The phase information of the Fourier transform changes. Explanation: Adding zeros at the start of the signal translates to adding delay. Consider the ...
• 613

### Why zero-pad at the end of a signal?

The frequency resolution in the context of the DFT is indeed dependent on the length of the signal in the time domain, not merely the size of the DFT. Here’s a more detailed explanation: Frequency ...
• 459
Accepted

### Debugging a Haar wavelet transform in the Fourier domain

The results are different because they represent different things. The first formula is the continuous Fourier transform of the continuous Haar wavelet (apart from a scaling factor). The second result ...
• 90.5k
Accepted

### ECG analysis in MATLAB

A few points to discuss IIR filter are typically minimum phase and FIR are typically linear phase. That's not always the case, but good enough for the current discussion. Linear phase filters are good ...
• 45.6k
Accepted

• 25.9k
1 vote

### Linear convolution of a 100 sample time series and a 20 tap filter in the frequency domain

I have never heard of "20 tap filter". Is that just a FIR filter with 20 coefficients? yes. (some functions for filtering make it a bit confusing what is the number of coefficients and what ...
• 31.2k

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