Signal package

The signal package is part of the Octave Forge project and provides signal processing algorithms for use with Octave. The functions provided by the signal package include creation of waveforms, FIR and IIR filter design, spectral analysis, Fourier and other transforms, window functions, and resampling and rate changing.

Missing Functions

This is a list of functions that are not yet implemented in the Octave signal package. This list is subject to change and may not be complete in any sense. However, it is a starting point when looking for missing functionality or for possible projects to work on.

Signals

demod
modulate
seqperiod
shiftdata
strips
udecode
uencode
unshiftdata
vco

Signal Measurement

bandpower
dutycycle
enbw
falltime
midcross
overshoot
peak2peak
peak2rms
pulseperiod
pulsesep
pulsewidth
risetime
rms
rssq
settlingtime
sfdr
slewrate
statelevels
undershoot

Filter Analysis

filternorm
filtord
firtype
impzlength
isallpass
islinphase
ismaxphase
isminphase
isstable
phasedelay
phasez
stepz
zerophase

Filter Conversion

cell2sos
filt2block
latc2tf
latcfilt
realizemdl
sos2cell
sos2ss
ss2sos
tf2latc
tf2zpk

IIR Filter Design

lp2bp
lp2bs
lp2hp
lp2lp
yulewalk

FIR Filter Design

cfirpm
equiripple
fircls
fircls1
firpm
firpmord
firrcos
freqsamp
gaussfir
intfilt
kaiserwin
maxflat
polyscale

Transforms

goertzel
icceps

Spectral Analysis

cconv
corrmtx
db
db2mag
db2pow
mag2db
pcov
peig
pmcov
pmtm
pmusic
pow2db
rooteig
rootmusic
spectrogram

Window Functions

dpss
dpssclear
dpssdir
dpssload
taylorwin

System Identification

ac2poly
ac2rc
arcov
armcov
corrmtx
is2rc
lar2rc
lpc
lsf2poly
poly2ac
poly2lsf
poly2rc
polyscale
prony
rc2ac
rc2is
rc2lar
rc2poly
rlevinson
schurrc
stmcb

Classdef-based Filter Design

design
designmethods
designopts
fdesign
fdesign.arbmag
fdesign.bandpass
fdesign.bandstop
fdesign.differentiator
fdesign.highpass
fdesign.hilbert
fdesign.lowpass
fdesign.pulseshaping
setspecs
validstructures
window

Interactive Design Tools

dspfwiz
fdatool
filterbuilder
fvtool
sptool
wintool
wvtool