Spectrum Analyzer :
A device for analyzing a system of oscillations, esp. sound, into its separate
components (Harmonics).
A time domain signal of Guitar Note
It's Harmonics in Spectrum Analyzer as u can see it's composed of many frequencies
Lower Note
Higher Note, composed of many different frequencies
Newton's Prism and Fourier Transform :
As prism decomposed the light into several colors to see that light is composed
of different colors like red, green , blue etc
Same thing is done by Fourier Transform, that it tells that the current sound signal
is composed of these different frequencies. It's a mathematical Miracle.
Thanks to Joseph Fourier.
More Pictures :
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