+**F0** (pronounced "eff-zero"), or [fundamental frequency](/wiki/Fundamental_frequency), marks the lowest, strongest periodic vibration in a sound wave. It's the primary acoustic correlate of perceived [pitch](/wiki/Pitch), especially in human speech and music, defining how high or low a sound seems.
+## See also
+- [Harmonics](/wiki/Harmonics)
+- [Spectrum](/wiki/Spectrum)
+- [Sound](/wiki/Sound)
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