resample: Resample a Sound

In phonTools: Tools for Phonetic and Acoustic Analyses

Resample a Sound

Description

Resample using sinc interpolation.

Usage

resample (sound, newfs, oldfs, precision = 50, filterorder = 200, synthfilter = FALSE)

Arguments

sound	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.
newfs	The new desired sampling frequency.
oldfs	The original sampling frequency. If a 'sound' object is provided, this does not need to be specified.
precision	The number of samples before and after the current point to be used for interpolation.
filterorder	The number of taps to be used for the low-pass FIR filters used, where appropriate.
synthfilter	If TRUE, synthfilter() is used for filtering.

Value

The resampled vector is returned. If a 'sound' object is passed, the resampled sound is returned as an object.

Author(s)

Santiago Barreda <[e-mail]>

Examples

#data (sound)
## downsample and then upsample the sound back to 
## its original sampling frequency
#downsamped = resample (sound, 11025)
#upsamped = resample (downsamped, 22050)

# compare a part of the waveforms for all three sounds
#par (mfrow = c(3,1), mar = c(4,4,1,1))
#plot (sound$sound[1:14000], type = 'l')
#plot (upsamped$sound[1:14000], type = 'l', col = 2)
#plot (downsamped$sound[1:7000], type = 'l', col = 4)

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