What is the meaning of imaginary values in the time domain?

Imaginary values in the time domain simply mean that you actually have two signals, the real-part and the imaginary part.

1. What does the imaginary part of FFT mean?
2. What is real and imaginary signal?
3. What is domain time domain?
4. How do you find the real and imaginary parts of a complex number?

What does the imaginary part of FFT mean?

The real portion of an FFT result is how much each frequency component resembles a cosine wave, the imaginary component, how much each component resembles a sine wave.

What is real and imaginary signal?

Real and Imaginary Signals

Example: If x(t)= 3 then x*(t)=3*=3 here x(t) is a real signal. If x(t)= 3j then x*(t)=3j* = -3j = -x(t) hence x(t) is a odd signal. Note: For a real signal, imaginary part should be zero. Similarly for an imaginary signal, real part should be zero.

What is domain time domain?

Time domain refers to the analysis of mathematical functions, physical signals or time series of economic or environmental data, with respect to time.

How do you find the real and imaginary parts of a complex number?

In a complex number z=a+bi , a is called the "real part" of z and b is called the "imaginary part." If b=0 , the complex number is a real number; if a=0 , then the complex number is "purely imaginary."