seewave (version 1.6.4)

crest: Crest factor and visualization

Description

This function returns the crest factor and localizes the different crest(s).

Usage

crest(wave, f, plot = FALSE, col = 2, cex = 3, symbol = "*", ...)

Value

• The function returns a list of three items
• C
  crest factor
• val
  value of the crest(s)
• loc
  location of the crest(s)

Details

The crest factor of a time series s is calculated according to: $$C = \frac{max(s)}{rms(s)}$$ with rms the root-mean-square (see rms).

References

Hartmann, W. M. 1998 Signals, sound and sensation. New York: Springer.

See Also

oscillo, rms

Examples

data(tico)
crest(tico, f=22050)
# see the crest location and change the default graphical parameters
crest(tico, f=22050, plot=TRUE, sym="-")