# spec.taper

0th

Percentile

##### Taper a Time Series by a Cosine Bell

Apply a cosine-bell taper to a time series.

Keywords
ts
##### Usage
spec.taper(x, p = 0.1)
##### Arguments
x
A univariate or multivariate time series
p
The proportion to be tapered at each end of the series, either a scalar (giving the proportion for all series) or a vector of the length of the number of series (giving the proportion for each series..
##### Details

The cosine-bell taper is applied to the first and last p[i] observations of time series x[, i].

##### Value

A new time series object.

spec.pgram, cpgram