soundgen (version 1.5.0)

getIntegerRandomWalk: Discrete random walk

Description

Takes a continuous random walk and converts it to continuous epochs of repeated values 0/1/2, each at least minLength points long. 0/1/2 correspond to different noise regimes: 0 = no noise, 1 = subharmonics, 2 = subharmonics and jitter/shimmer.

Usage

getIntegerRandomWalk(rw, nonlinBalance = 50, minLength = 50,
  q1 = NULL, q2 = NULL, plot = FALSE)

Arguments

rw

a random walk generated by getRandomWalk (expected range 0 to 100)

nonlinBalance

a number between 0 to 100: 0 = returns all zeros; 100 = returns all twos

minLength

the mimimum length of each epoch

q1, q2

cutoff points for transitioning from regime 0 to 1 (q1) or from regime 1 to 2 (q2). See noiseThresholdsDict for defaults

plot

if TRUE, plots the random walk underlying nonlinear regimes

Value

Returns a vector of integers (0/1/2) of the same length as rw.

Examples

Run this code
# NOT RUN {
rw = getRandomWalk(len = 100, rw_range = 100, rw_smoothing = .2)
r = getIntegerRandomWalk(rw, nonlinBalance = 75,
                         minLength = 10, plot = TRUE)
r = getIntegerRandomWalk(rw, nonlinBalance = 15,
                         q1 = 30, q2 = 70,
                         minLength = 10, plot = TRUE)
# }

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