BlurSignal: no visible global function definition for 'fft'
FWT_TI: no visible global function definition for 'fft'
FWaveD: no visible global function definition for 'fft'
IFWT_TI: no visible global function definition for 'fft'
MultiThresh1: no visible global function definition for 'fft'
WaveD: no visible global function definition for 'fft'
WaveD: no visible global function definition for 'mad'
WaveD: no visible global function definition for 'shapiro.test'
find.j1: no visible global function definition for 'fft'
maxithresh: no visible global function definition for 'fft'
multires: no visible global function definition for 'plot'
multires: no visible global function definition for 'lines'
plot.wvd: no visible global function definition for 'par'
plot.wvd: no visible global function definition for 'plot'
plot.wvd: no visible global function definition for 'title'
plot.wvd: no visible global function definition for 'dnorm'
plot.wvd: no visible global function definition for 'lines'
plot.wvd: no visible global function definition for 'density'
plot.wvd: no visible global function definition for 'qqnorm'
plot.wvd: no visible global function definition for 'qqline'
plot.wvd: no visible global function definition for 'boxplot'
plotspec: no visible global function definition for 'fft'
plotspec: no visible global function definition for 'lines'
projFj: no visible global function definition for 'fft'
projVj: no visible global function definition for 'fft'
projWj: no visible global function definition for 'fft'
scale: no visible global function definition for 'fft'
scale: no visible global function definition for 'mad'
speczoom: no visible global function definition for 'fft'
speczoom: no visible global function definition for 'plot'
waved.example: no visible global function definition for 'dgamma'
waved.example: no visible global function definition for 'rnorm'
waved.example: no visible global function definition for 'rt'
waved.example: no visible global function definition for 'var'
waved.example: no visible global function definition for 'fft'
waved.example: no visible global function definition for 'par'
waved.example: no visible global function definition for 'plot'
waved.example: no visible global function definition for 'lines'
Undefined global functions or variables:
  boxplot density dgamma dnorm fft lines mad par plot qqline qqnorm
  rnorm rt shapiro.test title var
Consider adding
  importFrom("graphics", "boxplot", "lines", "par", "plot", "title")
  importFrom("stats", "density", "dgamma", "dnorm", "fft", "mad",
             "qqline", "qqnorm", "rnorm", "rt", "shapiro.test", "var")
to your NAMESPACE file.