open_dbm/docs/website/versioned_docs/version-2.1/fundamental-frequency.md

id, title

id	title
fundamental-frequency	Fundamental Frequency

The fundamental frequency (f₀) is the lowest frequency of a periodic waveform, measured in Hertz (Hz). It is the greatest common divisor of all the frequency components contained in a signal.¹

Raw Variables

Variable	Description
aco_ff	Fundamental frequency. Frame-wise fundamental frequency values in Hz.

Derived Variables

Variable	Description
aco_ff_mean	Fundamental frequency mean. Mean of aco_ff across the audio file.
aco_ff_std	Fundamental frequency standard deviation. Standard deviation of aco_ff across the audio file.

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1. https://en.wikipedia.org/wiki/Fundamental_frequency ↩︎