preemphasis: Add Preemphasis

In phonTools: Tools for Phonetic and Acoustic Analyses

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 <[email protected]>

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 May 29, 2017, 9 a.m.