rPraat (version 1.3.2-1)

pt.legendre: pt.legendre

Description

Interpolate the PitchTier in npoints equidistant points and approximate it by Legendre polynomials

Usage

pt.legendre(pt, npoints = 1000, npolynomials = 4)

Arguments

pt

PitchTier object

npoints

Number of points of PitchTier interpolation

npolynomials

Number of polynomials to be used for Legendre modelling

Value

Vector of Legendre polynomials coefficients

See Also

pt.legendreSynth, pt.legendreDemo, pt.cut, pt.cut0, pt.read, pt.plot, pt.Hz2ST, pt.interpolate

Examples

# NOT RUN {
pt <- pt.sample()
pt <- pt.Hz2ST(pt)
pt <- pt.cut(pt, tStart = 3)  # cut PitchTier from t = 3 sec and preserve time
c <- pt.legendre(pt)
print(c)
leg <- pt.legendreSynth(c)
ptLeg <- pt
ptLeg$t <- seq(ptLeg$tmin, ptLeg$tmax, length.out = length(leg))
ptLeg$f <- leg
# }
# NOT RUN {
plot(pt$t, pt$f, xlab = "Time (sec)", ylab = "F0 (ST re 100 Hz)")
lines(ptLeg$t, ptLeg$f, col = "blue")
# }