fundamental frequency

- For a
__complex signal__, wave, or vibration which is periodic, the__sinusoidal__component having the lowest frequency. All integral multiples are called harmonics, the second harmonic being twice the fundamental frequency, the third harmonic being three times the fundamental frequency, and so on. Any even-numbered multiple of the fundamental frequency is called an even harmonic, while odd-numbered multiples are called odd harmonics. Also called fundamental, fundamental component, or first harmonic. - For an oscillating
__system__, the lowest__natural resonance__frequency. - synonym first harmonic
- synonym fundamental component

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