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 |

`flim` |
numeric. Specify the frequency limits on the Y-axis in Hz. Default
setting is |

`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 |

`col` |
set the colors for the amplitude scale (dB) of the spectrogram. |

### Examples

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

*bioacoustics*version 0.2.8 Index]