28 lines
2.4 KiB
Markdown
28 lines
2.4 KiB
Markdown
---
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id: vocal-tremor
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title: Vocal Tremor
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---
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Vocal tremor is measured according to the methods described in [this paper](https://www.researchgate.net/publication/288142544_Vocal_tremor_measurement_based_on_autocorrelation_of_contours) by Marcus Bruckl and we highly suggest reading that work to help better understand the variables below.
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### Raw Variables
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| Variable | Description |
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| ----------- | ----------- |
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| `mov_freqtremfreq` | **Frequency tremor frequency (FTrF):** Frequency of the strongest low-frequency modulation of Fundamental frequency contour. |
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| `mov_freqtremindex` | **Frequency tremor intensity index (FTrI):** Intensity or magnitude of the strongest low frequency modulation of Fundamental frequency contour. |
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| `mov_freqtrempindex` | **Frequency tremor power index (FTrP):** Power index of the strongest low frequency modulation of Fundamental frequency contour. |
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| `mov_amptremfreq` | **Amplitude tremor frequency (ATrF):** Frequency of the strongest low-frequency modulation of Amplitude contour. |
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| `mov_amptremindex` | **Amplitude tremor intensity index (ATrI):** Intensity/magnitude of the strongest low frequency modulation of Amplitude contour. |
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| `mov_amptrempindex` | **Amplitude tremor power index (ATrP):** Power index of the strongest low frequency modulation of Amplitude contour. |
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### Derived Variables
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| Variable | Description |
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| ----------- | ----------- |
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| `mov_freqtremfreq_mean` | **Mean frequency tremor frequency (FTrF):** Frequency of the strongest low-frequency modulation of Fundamental frequency contour. |
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| `mov_freqtremindex_mean` | **Mean frequency tremor intensity index (FTrI):** Intensity or magnitude of the strongest low frequency modulation of Fundamental frequency contour.contour. |
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| `mov_freqtrempindex_mean` | **Mean frequency tremor power index (FTrP):** Power index of the strongest low frequency modulation of Fundamental frequency contour. |
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| `mov_amptremfreq_mean` | **Mean amplitude tremor frequency (ATrF):** Frequency of the strongest low-frequency modulation of Amplitude contour. |
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| `mov_amptremindex_mean` | **Mean amplitude tremor intensity index (ATrI):** Intensity/magnitude of the strongest low frequency modulation of Amplitude contour. |
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| `mov_amptrempindex_mean` | **Mean amplitude tremor power index (ATrP):** Power index of the strongest low frequency modulation of Amplitude contour. | |