How to determine fundamental frequencies (beats/minute) of heartbeat? (matlab)

1. How do you find the fundamental frequency of a signal in Matlab?
2. How do you find the fundamental frequency of a signal?

How do you find the fundamental frequency of a signal in Matlab?

Use fft(). Then use the second return argument of max() to find the index of the highest signal. That's your fundamental frequency's index.

How do you find the fundamental frequency of a signal?

A signal with a period T repeats at a rate of f₀ = 1/T, which is referred to as the fundamental frequency of the signal.