COV5_x | R Documentation |
Computes the coefficient of variance for an interval vector based on the average of the first four elements in the vector of intervals.
COV5_x(x, n = 20, return.na = TRUE, na.rm = TRUE)
x |
The input vector containing syllable durations. |
n |
The number of intervals to include in the computations. Defaults to 20. The vector should not contain missing values. |
return.na |
boolean;Return NA in the case there are not 8 intervals in the series? |
na.rm |
Should NA intervals be removed? |
A single value indicating Relative coefficient of variation in intervals $5..n$ relative to the mean duration of intervals $1..4$.
Fredrik Karlsson
Skodda, S., Lorenz, J., & Schlegel, U. (2012). Instability of syllable repetition in Parkinson's disease—Impairment of automated speech performance? Basal Ganglia, 3(1), 33–37. doi:10.1016/j.baga.2012.11.002 Skodda, S., Schlegel, U., Hoffmann, R., & Saft, C. (2013). Impaired motor speech performance in Huntington’s disease. Journal of Neural Transmission, 1–9–9. doi:10.1007/s00702-013-1115-9
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