# signal v0.7-6

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## Signal Processing

A set of signal processing functions originally written for 'Matlab' and 'Octave'.
Includes filter generation utilities, filtering functions,
resampling routines, and visualization of filter models. It also
includes interpolation functions.

## Functions in signal

Name | Description | |

butter | Generate a Butterworth filter. | |

interp1 | Interpolation | |

chirp | A chirp signal | |

freqs | s-plane frequency response | |

bilinear | Bilinear transformation | |

fftfilt | Filters with an FIR filter using the FFT | |

levinson | Durbin-Levinson Recursion | |

FilterOfOrder | Filter of given order and specifications. | |

sgolayfilt | Apply a Savitzky-Golay smoothing filter | |

specgram | Spectrogram plot | |

polyval | Evaluate a polynomial | |

cheby1 | Generate a Chebyshev filter. | |

ellip | Elliptic or Cauer filter | |

impz | Impulse-response characteristics | |

ellipord | Elliptic filter order and cutoff | |

remez | Parks-McClellan optimal FIR filter design | |

Ma | Create a moving average (MA) model | |

resample | Change the sampling rate of a signal | |

sgolay | Savitzky-Golay smoothing filters | |

ifft | Inverse FFT | |

sftrans | Transform filter band edges | |

unwrap | Unwrap radian phases | |

cheb1ord | Chebyshev type-I filter order and cutoff | |

signal-internal | Internal or uncommented functions | |

fir1 | FIR filter generation | |

filtfilt | Forward and reverse filter a signal | |

poly | Polynomial given roots | |

signal-package | Signal processing | |

buttord | Butterworth filter order and cutoff | |

pchip | Piecewise cubic hermite interpolation | |

kaiserord | Parameters for an FIR filter from a Kaiser window | |

fir2 | FIR filter generation | |

interp | Interpolate / Increase the sample rate | |

an | Complex unit phasor of the given angle in degrees. | |

grpdelay | Group delay of a filter or model | |

Arma | Create an autoregressive moving average (ARMA) model. | |

wav | Example wav file | |

roots | Roots of a polynomial | |

zplane | Pole-zero plot | |

conv | Convolution | |

freqz | z-plane frequency response | |

Zpg | Zero-pole-gain model | |

decimate | Decimate or downsample a signal | |

Windowing functions | Windowing functions | |

medfilt1 | Median filter | |

spencer | Spencer filter | |

chebwin | Dolph-Chebyshev window coefficients | |

kaiser | Kaiser window | |

filter | Filter a signal | |

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## Last month downloads

## Details

Date | 2015-07-29 |

License | GPL-2 |

NeedsCompilation | yes |

Packaged | 2015-07-29 17:06:27 UTC; ligges |

Repository | CRAN |

Date/Publication | 2015-07-30 00:17:37 |

depends | base (>= 2.14.0) , R (>= 2.14.0) |

imports | graphics , grDevices , MASS , stats , utils |

suggests | pracma |

Contributors | David Billinghurst, Andre Carezia, Pascal Dupuis, Bill Lash, Paulo Neis, Jaakko Ruohio, Doug Stewart, Kurt Hornik, Friedrich Leisch, Uwe Ligges, Olaf Mersmann, Kai Habel, Paul Kienzle, Hans-Werner Borchers, John W. Eaton, E. Farhi, Julius O. Smith III, Andreas Weingessel, help Ported to R by Tom Short, Sarah Schnackenberg, Sebastian Krey |

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