# What is y axis in frequency domain?

## What is y axis in frequency domain?

The Y axis (amplitude) Frequency-domain measurements are sometimes viewed with a linear Y axis and a linear X axis, but usually must be viewed with a logarithmic Y axis, because this is the only way to view very small signals and much larger signals simultaneously.

What does a frequency domain representation show?

Put simply, a time-domain graph shows how a signal changes over time, whereas a frequency-domain graph shows how much of the signal lies within each given frequency band over a range of frequencies. The “spectrum” of frequency components is the frequency-domain representation of the signal.

### How do you read a frequency domain graph?

Frequency domains graphs usually look like a series of mountain peaks. The location of the each peak along the horizontal axis indicates the frequency of the peak. Low frequency sounds appear at the left end of the FFT; higher frequency sounds are at the right.

What is the horizontal axis represent in frequency domain plot?

In the frequency domain, amplitude is on the vertical axis, and frequency is on the horizontal axis. In the frequency domain, a Fourier spectrum plot also shows the amplitude of sinusoidal waveforms versus frequency.

#### What is amplitude vs frequency?

Amplitude is important when balancing and controlling the loudness of sounds, such as with the volume control on your CD player. It is also the origin of the word amplifier, a device which increases the amplitude of a waveform. Frequency is the speed of the vibration, and this determines the pitch of the sound.

Why is the frequency domain useful?

The frequency domain representation of a signal allows you to observe several characteristics of the signal that are either not easy to see, or not visible at all when you look at the signal in the time domain. For instance, frequency-domain analysis becomes useful when you are looking for cyclic behavior of a signal.

## What is measured on vertical axis on time domain graph?

(If the vibration is complex, the frequency you calculate from the fundamental period is called the fundamental frequency). On a time domain graph, amplitude is the vertical “distance” from the equilibrium to one extreme. In the graph above, the y-axis is in Volts, so the amplitude is in Volts.

Which is an example of a frequency domain graph?

I found general explanations on the Internet, for example: frequency-domain graph shows how much of the signal lies within each given frequency band over a range of frequencies

### Which is function lays atop the frequency domain?

The Fletcher-Munson curve is a widely used function that lays atop the frequency domain that audio engineers often reference when mixing various frequencies. The function’s curve selectively boosts and reduces frequencies to allow the audio engineer to raise the gain of the signal while mitigating the unpleasant sounds.

How to transform a signal to a frequency domain?

Fourier series transform a signal from time domain to frequency domain. But I could not find an example which shows how I can obtain the frequency domain graph using the formula of a signal.

#### How does the Fourier transform relate to the frequency domain?

frequency-domain graph shows how much of the signal lies within each given frequency band over a range of frequencies Fourier transform refers to both the frequency domain representation and the mathematical operation that associates the frequency domain representation to a function of time. 29/06/2019