soundgen (version 2.7.2)

addPitchJumps: Add pitch jumps

Description

Internal soundgen function

Usage

addPitchJumps(pitch, magn, nj = 1, prop = 0.1, plot = FALSE)

Arguments

pitch

numeric vector of f0 values over time (any step is OK)

magn

magnitude of jump(s) in semitones, a numeric vector of length 1 or nj

nj

number of jump pairs = affected segments (e.g., a single fragment is transposed if nj = 1)

prop

duration of transposed episode(s) a a proportion of the total voiced duration (length of pitch)

plot

if TRUE, plots the original and modified contours

Details

Adds random discontinuities (jumps) to a pitch contour in a manner that shifts a segment of pitch contour up or down. Careful when adding several jumps: one can land on top of another, and it gets rather weird rather quickly.

Examples

pitch = getSmoothContour(c(100, 350, 320, 110), len = 100, interpol = 'loess')
addPitchJumps(pitch, magn = runif(1, 3, 12), plot = TRUE)
addPitchJumps(pitch, magn = c(6, 1), nj = 2, plot = TRUE)
addPitchJumps(pitch, magn = 3, nj = 5, plot = TRUE)

pitch2 = c(rep(NA, 10), pitch[1:50], rep(NA, 25), pitch[51:100], rep(NA, 17))
addPitchJumps(pitch2, magn = c(6, 1), nj = 2, plot = TRUE)