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docs/website/versioned_docs/version-2.1/jitter.md

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+---
+id: jitter
+title: Jitter
+---
+
+The jitter of an audio signal is the parameter of frequency variation from cycle to cycle[^1], and is affected mainly by the lack of control over vocal cord vibration.
+
+[^1]: https://en.wikipedia.org/wiki/Jitter
+
+## Raw Variables
+
+| Variable      | Description |
+| ----------- | ----------- |
+| `aco_jitter`      | **Jitter.** Frame-wise measurements of jitter.    |
+
+## Derived Variables
+
+| Variable      | Description |
+| ----------- | ----------- |
+| `aco_jitter_mean`      | **Jitter mean.** Mean of `aco_jitter` across the audio file.     |
+| `aco_jitter_std`      | **Jitter standard deviation.** Standard deviation of `aco_jitter` across the audio file.     |