afb: no visible global function definition for ‘convolve’
bandpass.fdp: no visible global function definition for ‘integrate’
bandpass.spp: no visible global function definition for ‘integrate’
bandpass.spp2: no visible global function definition for ‘integrate’
bandpass.var.spp: no visible global function definition for ‘integrate’
convolve2D: no visible global function definition for ‘mvfft’
convolve2D: no visible global function definition for ‘fft’
cpgram.test: no visible global function definition for ‘spec.taper’
cpgram.test: no visible global function definition for ‘fft’
da.thresh : getthrda2: no visible global function definition for
  ‘pchisq’
denoise.dwt.2d: no visible global function definition for ‘mad’
denoise.modwt.2d: no visible global function definition for ‘mad’
dwpt.sim: no visible global function definition for ‘rnorm’
dwpt.sim: no visible global function definition for ‘runif’
fdp.mle : fdpML: no visible global function definition for ‘integrate’
fdp.mle: no visible global function definition for ‘optimize’
fdp.mle: no visible global function definition for ‘integrate’
hosking.sim: no visible global function definition for ‘rnorm’
hybrid.thresh: no visible global function definition for ‘median’
manual.thresh: no visible global function definition for ‘median’
modhwt.coh: no visible global function definition for ‘filter’
modhwt.phase: no visible global function definition for ‘filter’
my.acf: no visible global function definition for ‘fft’
my.ccf: no visible global function definition for ‘fft’
per: no visible global function definition for ‘fft’
plot.dwt.2d: no visible global function definition for ‘image’
plot.dwt.2d: no visible global function definition for ‘rainbow’
plot.dwt.2d: no visible global function definition for ‘lines’
plot.dwt.2d: no visible global function definition for ‘axis’
portmanteau.test: no visible global function definition for ‘qchisq’
sfb: no visible global function definition for ‘convolve’
spp.mle: no visible global function definition for ‘lsfit’
spp.mle: no visible global function definition for ‘optim’
spp2.mle: no visible global function definition for ‘lsfit’
spp2.mle: no visible global function definition for ‘optim’
squared.gain: no visible global function definition for ‘fft’
stackPlot: no visible binding for global variable ‘lines’
stackPlot: no visible global function definition for ‘par’
stackPlot : addmain: no visible global function definition for ‘par’
stackPlot : addmain: no visible global function definition for ‘mtext’
stackPlot: no visible global function definition for ‘plot’
stackPlot: no visible global function definition for ‘box’
stackPlot: no visible global function definition for ‘axis’
stackPlot: no visible global function definition for ‘mtext’
sure.thresh: no visible global function definition for ‘median’
universal.thresh: no visible global function definition for ‘median’
universal.thresh.modwt: no visible global function definition for
  ‘median’
wave.correlation: no visible global function definition for ‘qnorm’
wave.covariance : my.ccf.na: no visible global function definition for
  ‘fft’
wave.covariance : per: no visible global function definition for ‘fft’
wave.covariance : per2: no visible global function definition for ‘fft’
wave.covariance: no visible global function definition for ‘qnorm’
wave.variance : ci.gaussian: no visible global function definition for
  ‘qnorm’
wave.variance : ci.eta3: no visible global function definition for
  ‘qchisq’
wave.variance : ci.nongaussian: no visible global function definition
  for ‘qnorm’
Undefined global functions or variables:
  axis box convolve fft filter image integrate lines lsfit mad median
  mtext mvfft optim optimize par pchisq plot qchisq qnorm rainbow rnorm
  runif spec.taper
Consider adding
  importFrom("grDevices", "rainbow")
  importFrom("graphics", "axis", "box", "image", "lines", "mtext", "par",
             "plot")
  importFrom("stats", "convolve", "fft", "filter", "integrate", "lsfit",
             "mad", "median", "mvfft", "optim", "optimize", "pchisq",
             "qchisq", "qnorm", "rnorm", "runif", "spec.taper")
to your NAMESPACE file.