How to calculate a delay between two signals in frequency domain?

1. How do you find the delay between two signals?
2. What is frequency delay?
3. How do you calculate filter delay?

How do you find the delay between two signals?

d = finddelay( x , y ) returns an estimate of the delay d between input signals x and y . Delays in x and y can be introduced by prepending zeros. d = finddelay( x , y , maxlag ) uses maxlag to find the estimated delay(s) between x and y .

What is frequency delay?

Frequency Domain Representation of the Time Delay

This tells us that the magnitude of a time delay is just unity, and is independent of frequency. This makes sense - if you delay a signal, you are not changing the magnitude of the signal, you are only changing the timing of the signal.

How do you calculate filter delay?

The formula is simple: given a FIR filter which has N taps, the delay is: (N – 1) / (2 * Fs), where Fs is the sampling frequency. So, for example, a 21 tap linear-phase FIR filter operating at a 1 kHz rate has delay: (21 – 1) / (2 * 1 kHz)=10 milliseconds.