How to get coordinates(x(time),y(frequency)) of spectral peaks from spectrogram?

1. How is frequency shown on a spectrogram?
2. How do you find the spectral peak?
3. What is FFT in spectrogram?
4. How do you find the frequency spectrum of a signal?

How is frequency shown on a spectrogram?

The vertical axis represents frequency, which can also be thought of as pitch or tone, with the lowest frequencies at the bottom and the highest frequencies at the top.

How do you find the spectral peak?

For a particular spectral peak, the dichroic ratio R is defined by the relationshipR = A⊥/A∥where A⊥ and A∥ are the absorption of the LB films when the light is polarized perpendicular or parallel to the dipping direction, respectively.

What is FFT in spectrogram?

Fast Fourier Transform (FFT)

Spectrogram.

How do you find the frequency spectrum of a signal?

Frequency spectrum of a signal is the range of frequencies contained by a signal. For example, a square wave is shown in Fig. 3.5A. It can be represented by a series of sine waves, S(t) = 4A/π sin(2πft) + 4A/3π sin(2π(3f)t) + 4A/5π sin(2π(5f)t + …)