Description Usage Arguments Details Value Author(s) See Also Examples

This function computes the Fourier analysis of the instantaneous frequency of a time wave. This allows to detect periodicity in frequency modulation.

1 |

`wave` |
an R object. |

`f` |
sampling frequency of |

`threshold` |
amplitude threshold for signal detection (in % ). |

`plot` |
logical, if |

`...` |
other |

This function is based on `ifreq`

and `spec`

.

The instantaneous frequency of `wave`

is first computed and the spectrum of this
frequency modulation is then processed. All `env`

and `spec`

arguments can be
set up.

If `plot`

is `FALSE`

, `fma`

returns a numeric vector
corresponding to the computed spectrum.
If `peaks`

is not `NULL`

, `fma`

returns a list with
two elements:

`spec` |
the spectrum computed |

`peaks ` |
the peaks values (in kHz). |

Jerome Sueur [email protected]

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