Howtosignalprocessing
- How do you find the phase difference between two waves?
- How to calculate phase difference between two waves in Python?
How do you find the phase difference between two waves?
The phase difference between two sound waves of the same frequency moving past a fixed location is given by the time difference between the same positions within the wave cycles of the two sounds (the peaks or positive-going zero crossings, for example), expressed as a fraction of one wave cycle.
How to calculate phase difference between two waves in Python?
The simplest technique in your case is to simply calculate the correlation r of de-meaned signals, then get the phase difference as ϕ=arccos(r/π) if the signals are harmonic, i.e. single frequency sine waves. Another way of doing this is with cross-correlation function.
