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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