power.spectrum: Power Spectrum

In kmiddleton/EMG: EMG Analysis in R

Description

Calculate and plot power spectrum for a wave.

Usage

power.spectrum(y, samp.freq = 11025, plot = TRUE, plot_range = NULL)

Arguments

y	An object of class "EMG" or "Wave".
samp.freq	The recording frequency. Defaults to 11025 Hz.
plot	logical. Should the power spectrum be plotted? Defaults to TRUE.
plot_range	numeric vector. The range for plotting. Defaults to 0 to samp.freq / 2.

Value

A data.frame containing the intensity at each frequency from 0 to samp.freq / 2.

Author(s)

Kevin Middleton ([e-mail])

Examples

pulse <- read.EMG(system.file("extdata",
                              "pulse_1.wav",
                              package = "EMG"))
power.spectrum(pulse)

no_signal <- read.EMG(system.file("extdata",
                                  "amp_on_baseline.wav",
                                  package = "EMG"))
power.spectrum(no_signal)

kmiddleton/EMG documentation built on May 20, 2019, 12:50 p.m.