What does the amplitude in a frequency response of a signal signify?

1. What does the amplitude of a signal measure?
2. What is amplitude of response?
3. How does amplitude affect signal?
4. What does the amplitude of FFT mean?

What does the amplitude of a signal measure?

Signal strength or amplitude is measured by the distance of each curve from the zero axis (or red (black in print versions) line in the figure). The direct signal is very much stronger than those of the target area.

What is amplitude of response?

The amplitude response is the ratio of output amplitude to input, usually a function of the frequency. Similarly, phase response is the phase of the output with the input as reference. The input is defined as zero phase.

How does amplitude affect signal?

Amplitude is the height of the radio signal that it reaches while attenuating (bouncing up and down in its sine wave). Thus, amplitude is often referred to as the power of a radio signal, too. The more amplitude a radio signal starts with, the farther it can travel.

What does the amplitude of FFT mean?

The amplitude of the FFT is related to the number of points in the time-domain signal. Use the following equation to compute the amplitude and phase versus frequency from the FFT. where the arctangent function here returns values of phase between –π and +π, a full range of 2π radians.