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

Impulse-response characteristics of a discrete filter.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | ```
## Default S3 method:
impz(filt, a = 1, n = NULL, Fs = 1, ...)
## S3 method for class 'Arma'
impz(filt, ...)
## S3 method for class 'Ma'
impz(filt, ...)
## S3 method for class 'impz'
plot(x, xlab = "Time, msec", ylab = "", type = "l",
main = "Impulse response", ...)
## S3 method for class 'impz'
print(x, xlab = "Time, msec", ylab = "", type = "l",
main = "Impulse response", ...)
``` |

`filt` |
for the default case, the moving-average coefficients of
an ARMA model or filter. Generically, |

`a` |
the autoregressive (recursive) coefficients of an ARMA filter. |

`n` |
number of points at which to evaluate the frequency response. |

`Fs` |
sampling frequency in Hz. If not specified, the frequencies are in per unit. |

`...` |
for methods of |

`x` |
object to be plotted. |

`xlab,ylab,main` |
axis labels anmd main title with sensible defaults. |

`type` |
as in |

When results of `impz`

are printed, the impulse response will be
plotted. As with
`lattice`

plots, automatic printing does not work inside loops and
function calls, so explicit calls to `print`

or `plot`

are
needed there.

For `impz`

, a list of class `impz`

with items:

`x` |
impulse response signal. |

`t` |
time. |

Original Octave version by Kurt Hornik and John W. Eaton. Conversion to R by Tom Short.

https://en.wikipedia.org/wiki/Impulse_response

Octave Forge https://octave.sourceforge.io/

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