# Tag Info

### How to calculate the total time delay of a first order linear filter on a signal?

The filter will introduce phase shift to the signal that will appear as a total time delay. Not really. For an IIR filter the phase shift will be a function of frequency and it will (in general) not ...
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Accepted

### Invertible low-pass (Butterworth) filter in python (scipy)?

Is there an invertible low-pass filter No is there something particularly difficult about inverting a low-pass filter? Yes. Digital low pass filters (in the most common sense) have a zero at ...
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Accepted

• 79.2k
1 vote

### Cut-off frequency for Low-pass filters in Arctangent Demodulation

The primary purpose of those filters is to pass the desired signal bandwith and reject the carrier feed-through at $\omega_h$ and the double frequency component at $2\omega$. Given that, I would ...
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