spectro {bioacoustics} R Documentation

## Plot a spectrogram

### Description

Plot a spectrogram

### Usage

spectro(
wave,
channel = "left",
FFT_size = 256,
FFT_overlap = 0.875,
FFT_win = "hann",
LPF,
HPF = 0,
tlim = NULL,
flim = NULL,
ticks_y = NULL,
col = gray.colors(25, 1, 0)
)


### Arguments

 wave a Wave object. channel character. Channel to keep for analysis in a stereo recording: "left" or "right". Default setting is left. FFT_size integer. Size of the Fast Fourrier Transform (FFT) window. Default setting is 256. FFT_overlap numeric. Percentage of overlap between two FFT windows (from 0 to 1). Default setting is 0.875. FFT_win character. Specify the type of FFT window: "hann", "blackman4", or "blackman7". Default setting is "hann". LPF integer. Low-Pass Filter (Hz). Frequencies above the cutoff are greatly attenuated. Default setting is the Nyquist frequency of the recording. HPF integer. High-Pass Filter (Hz). Frequencies below the cutoff are greatly attenuated. Default setting is 0 Hz. tlim numeric. Specify the time limits on the X-axis in seconds (s). Default setting is NULL, i.e no time limits. flim numeric. Specify the frequency limits on the Y-axis in Hz. Default setting is NULL, i.e. frequency limits are equal to c(0, LPF). ticks_y numeric. Whether tickmarks should be drawn on the frequency Y-axis or not. The lower and upper bounds of the tickmarks and their intervals (in Hz) has to be specified. Default setting is NULL. col set the colors for the amplitude scale (dB) of the spectrogram.

### Examples

data(myotis)
spectro(myotis, tlim = c(1, 2))



[Package bioacoustics version 0.2.8 Index]