Fundamental content
The fundamental oscillation content is the proportion of the fundamental oscillation in a signal that is not purely sinusoidal (for example: rectangle, triangle or other). Such signals can be broken down into purely sinusoidal components using Fourier analysis . This frequency spectrum can be obtained, for example, via the Fourier transformation .
The fundamental frequency of a signal is defined as:
With
- the rms value of the fundamental component of the signal
- the rms value of all harmonics
- the current strength (instead, the electrical voltage can also be used for calculation).
Connection with the distortion factor k :
literature
- Thomas Görne: Sound engineering. 1st edition, Carl Hanser Verlag, Leipzig, 2006, ISBN 3-446-40198-9
- Horst Stöcker: Pocket book of physics. 4th edition, Verlag Harry Deutsch, Frankfurt am Main, 2000, ISBN 3-8171-1628-4