Upgrading from an Earlier Release :: Signal Processing Toolbox 6.3 Release Notes (Signal Processing Toolbox Release Notes)

Signal Processing Toolbox Release Notes

Upgrading from an Earlier Release

This section describes the upgrade issues involved in moving from the Signal Processing Toolbox 6.2.1 to Version 6.3.

If you are upgrading from Version 6.2 or earlier, see Upgrading from an Earlier Release in the Signal Processing Toolbox 6.2 Release Notes.

dfilt -- Coefficients Method

The dfilt coefficients method has been changed to the coeffs method, which returns a structure. See the Methods section of dfilt for information.

dfilt -- Passing Filter States

You cannot pass filter states (initial and final conditions) via the dfilt filter method. You must use the states property. See dfilt for more information.

FDATool -- State Space Filters

FDATool no longer supports state space filters. If you load a saved session that contains a state space filter, it is converted to a direct-form II transposed filter.

Filter Wizard Product Dependency

The Filter Wizard no longer requires the Signal Processing Blockset. You can use the Filter Wizard if you have the Signal Processing Toolbox and Simulink installed. If you have the Signal Processing Blockset installed, more options are available. See dspfwiz for more information.

firpm and cfirpm Inputs

The firpm and cfirpm functions now take function handles as inputs instead of strings.

FVTool -- Default Phase Units

The default units for the phase response in FVTool have been changed to radians. This is consistent with the phasez function.

Plotting PSD Objects and Function Output

The following functions and methods now generate standard MATLAB plots, instead of launching an interactive plot:

dspdata plot method
spectrum psd, pseudospectrum, and msspectrum methods
pburg
pcov
periodogram
pmcov
pmtm
pwelch
pyulear

Refer to the MATLAB documentation for information on plots.

Spectral Analysis Functions Inputs

pwelch (and the other spectrum analysis functions) no longer accept 'half' or 'whole'. You must use 'onesided' or 'twosided' to indicate the type of analysis you want.

Obsolete Functions from Version 6.3

Oboslete Function
Replacement Function

specgram
spectrogram

firgauss
gaussfir

Oboslete Function	Replacement Function
`specgram`	`spectrogram`
`firgauss`	`gaussfir`

Obsolete Functions from Version 6.2

Oboslete Function
Replacement Function

psd
psd method on spectrum object or plot method on dspdata.psd object

psdplot
psd method on spectrum object or plot method on dspdata.psd object

pmem
spectrum.yulear

remez
firpm

cremez
cfirpm

remezord
firpmord

tfe
tfestimate*

csd
cpsd*

cohere
mscohere*

Oboslete Function	Replacement Function
`psd`	`psd` method on `spectrum object` or `plot` method on `dspdata.psd` object
`psdplot`	`psd` method on `spectrum object` or `plot` method on `dspdata.psd` object
pmem	spectrum.yulear
`remez`	`firpm`
`cremez`	`cfirpm`
`remezord`	`firpmord`
`tfe`	`tfestimate`*
`csd`	`cpsd`*
`cohere`	`mscohere`*

*tfestimate, cpsd, and mscohere have new default values and, in some cases, produce different results. Refer to their reference pages for more information.

Major Bug Fixes Known Software and Documentation Problems