Determine fundamental period from zero crossing signal

1. How do you find the fundamental time period of a signal?
2. How do you calculate zero crossing rate?
3. How do you find the fundamental frequency of a digital signal?
4. What is zero crossing in signal processing?

How do you find the fundamental time period of a signal?

Periodic Functions

x(t) = x(t + nT). The minimum value of T that satisfies x(t) = x(t + T) is called the fundamental period of the signal and we denote it as T₀. Examples of periodic signals are infinite sine and cosine waves. Examples: Given x₁(t) = cos(3t), and x₂(t) = sin(5t).

How do you calculate zero crossing rate?

The function subtracts the Level value from the signal and then finds the zero crossings. If you do not specify Level , the function uses the default value of 0 and returns the zero-crossing rate. Example: zerocrossrate(x,Level=1) returns the rate at which the input signal x crosses 1 .

How do you find the fundamental frequency of a digital signal?

The fundamental frequency is f0=1/T, where T is the signal's fundamental period. In this case this can't be 800Hz because the signal is not periodic with period 1/800.

What is zero crossing in signal processing?

The Zero-Crossing Rate (ZCR) of an audio frame is the rate of sign-changes of the signal during the frame. In other words, it is the number of times the signal changes value, from positive to negative and vice versa, divided by the length of the frame.