Basic FAQ for FFT Analyzer

The value before taking the square root in the equation described in the effective value section (1) or (2) is called the signal's mean square value. That is, if x (t) is a periodic signal;

（1）

Also, if x (t) is a non-periodic signal;

（2）

This can be expressed as the mean square of the signal. x (t)of Power It is called a signal. Also, the quantity obtained by omitting the averaging operation in equations (1) and (2) is the signal. x (t)of Energy It is called a signal. x (t The power of a signal x (t It can also be said that it is the time-averaged value of the energy of ).

If the physical unit of the signal x (t) is EU, then the units of power and energy are EU ² and EU ² s, respectively.
Here, the power and energy of the signal x (t) are terms used in the field of signal processing and do not necessarily correspond to actual physical quantities.