1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
"""
Signal Processing Tools
=======================
Convolution:
convolve -- N-dimensional convolution.
correlate -- N-dimensional correlation.
convolve2d -- 2-dimensional convolution (more options).
correlate2d -- 2-dimensional correlation (more options).
sepfir2d -- Convolve with a 2-D separable FIR filter.
B-splines:
bspline -- B-spline basis function of order n.
gauss_spline -- Gaussian approximation to the B-spline basis function.
cspline1d -- Coefficients for 1-D cubic (3rd order) B-spline.
qspline1d -- Coefficients for 1-D quadratic (2nd order) B-spline.
cspline2d -- Coefficients for 2-D cubic (3rd order) B-spline.
qspline2d -- Coefficients for 2-D quadratic (2nd order) B-spline.
spline_filter -- Smoothing spline (cubic) filtering of a rank-2 array.
Filtering:
order_filter -- N-dimensional order filter.
medfilt -- N-dimensional median filter.
medfilt2 -- 2-dimensional median filter (faster).
wiener -- N-dimensional wiener filter.
symiirorder1 -- 2nd-order IIR filter (cascade of first-order systems).
symiirorder2 -- 4th-order IIR filter (cascade of second-order systems).
lfilter -- 1-dimensional FIR and IIR digital linear filtering.
hilbert --- Compute the analytic signal of a 1-d signal.
get_window --- Create FIR window.
detrend --- Remove linear and/or constant trends from data.
Filter design:
remez -- Optimal FIR filter design.
firwin --- Windowed FIR filter design.
iirdesign --- IIR filter design given bands and gains
iirfilter --- IIR filter design given order and critical frequencies
freqs --- Analog filter frequency response
freqz --- Digital filter frequency response
matlab-style IIR filter design:
butter (buttord) -- Butterworth
cheby1 (cheb1ord) -- Chebyshev Type I
cheby2 (cheb2ord) -- Chebyshev Type II
ellip (ellipord) -- Elliptic (Cauer)
bessel -- Bessel (no order selection available -- try butterod)
Linear Systems:
lti -- linear time invariant system object.
lsim -- continuous-time simulation of output to linear system.
impulse -- impulse response of linear, time-invariant (LTI) system.
step -- step response of continous-time LTI system.
LTI Reresentations:
tf2zpk -- transfer function to zero-pole-gain.
zpk2tf -- zero-pole-gain to transfer function.
tf2ss -- transfer function to state-space.
ss2tf -- state-pace to transfer function.
zpk2ss -- zero-pole-gain to state-space.
ss2zpk -- state-space to pole-zero-gain.
"""
postpone_import = 1
|
