# Difference between revisions of "Signal package"

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− | The {{Forge|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. | + | The {{Forge|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. There are also some wavelet functions included, because there is no separate wavelet package, at least for now. |

+ | |||

+ | You may also be interested in the [http://ltfat.sourceforge.net/ LTFAT] package. | ||

== Missing Functions == | == Missing Functions == |

## Revision as of 19:23, 15 September 2015

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. There are also some wavelet functions included, because there is no separate wavelet package, at least for now.

You may also be interested in the LTFAT package.

## 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