preemphasis: Add Preemphasis
In phonTools: Tools for Phonetic and Acoustic Analyses

preemphasis

R Documentation

Add Preemphasis

Description

Single-zero preemphasis filter.

Usage

preemphasis (input, cutoff = 50, fs = 22050, verify = FALSE, 
coeff = 0)

Arguments

`input`	Either a numeric vector representing a sequence of samples taken from a sound wave or a sound object created with the loadsound() or makesound() functions.
`cutoff`	The spectral slope is increased by 6 dB. per octave above this frequency.
`fs`	The sampling frequency of the sound. If a 'sound' object is passed, this does not need to be specified.
`verify`	If TRUE, before and after spectra are plotted to allow the user to visually verify the process.
`coeff`	Optionally, the single coefficient used by the filter may be specified.

Value

The modified sound is returned. If a 'sound' object another 'sound' object is returned.

Author(s)

Santiago Barreda <sbarreda@ucdavis.edu>

References

http://www.fon.hum.uva.nl/praat/manual/Sound__Filter__pre-emphasis____.html

Examples

#signal = sinusoid (c(100, 200, 400, 800, 1600), fs = 4000, 
#dur = 100, sum = TRUE)[,7]

#preemphasis (signal, verify = TRUE, fs = 4000, cutoff = 50)

phonTools documentation built on Nov. 21, 2023, 1:07 a.m.