www.gusucode.com > signal 工具箱matlab源码程序 > signal/@dfilt/analysis.m
% The following functions are available for discrete-time filters analysis(type
% help dfilt/<FUNCTION> to get help on a specific method - e.g. help
% dfilt/freqz):
%
% -----------------------------------------------------------------------
% Analysis
% -----------------------------------------------------------------------
% <a href="matlab:help dfilt/info">info</a> - Filter information.
% <a href="matlab:help dfilt/freqz">freqz</a> - Frequency response of a discrete-time filter.
% <a href="matlab:help dfilt/phasez">phasez</a> - Phase response of a discrete-time filter.
% <a href="matlab:help dfilt/zerophase">zerophase</a> - Zero-phase response of a discrete-time filter.
% <a href="matlab:help dfilt/grpdelay">grpdelay</a> - Group delay of a discrete-time filter.
% <a href="matlab:help dfilt/phasedelay">phasedelay</a> - Phase delay of a discrete-time filter.
% <a href="matlab:help dfilt/impz">impz</a> - Impulse response of a discrete-time filter.
% <a href="matlab:help dfilt/impzlength">impzlength</a> - Length of the impulse response for a discrete-time filter.
% <a href="matlab:help dfilt/stepz">stepz</a> - Step response of a discrete-time filter.
% <a href="matlab:help dfilt/zplane">zplane</a> - Pole/Zero plot.
% <a href="matlab:help dfilt/cost">cost</a> - Cost Estimate. (DSP System Toolbox Required)
% <a href="matlab:help dfilt/measure">measure</a> - Measure characteristics of the frequency response. (DSP System Toolbox Required)
%
% <a href="matlab:help dfilt/order">order</a> - Filter order.
% <a href="matlab:help dfilt/coeffs">coeffs</a> - Filter coefficients.
% <a href="matlab:help dfilt/fftcoeffs">fftcoeffs</a> - FFT coefficients (available only with DFILT.FFTFIR)
% <a href="matlab:help dfilt/firtype">firtype</a> - Determine the type (1-4) of a linear phase FIR filter.
% <a href="matlab:help dfilt/tf">tf</a> - Convert to transfer function.
% <a href="matlab:help dfilt/zpk">zpk</a> - Discrete-time filter zero-pole-gain conversion.
% <a href="matlab:help dfilt/ss">ss</a> - Discrete-time filter to state-space conversion.
% <a href="matlab:help dfilt/nsections">nsections</a> - Number of sections in a discrete-time filter.
%
% <a href="matlab:help dfilt/isallpass">isallpass</a> - True for allpass discrete-time filter.
% <a href="matlab:help dfilt/iscascade">iscascade</a> - True for cascaded discrete-time filter.
% <a href="matlab:help dfilt/isfir">isfir</a> - True for FIR discrete-time filter.
% <a href="matlab:help dfilt/islinphase">islinphase</a> - True for linear discrete-time filter.
% <a href="matlab:help dfilt/ismaxphase">ismaxphase</a> - True if maximum phase.
% <a href="matlab:help dfilt/isminphase">isminphase</a> - True if minimum phase.
% <a href="matlab:help dfilt/isparallel">isparallel</a> - True for discrete-time filter with parallel sections.
% <a href="matlab:help dfilt/isreal">isreal</a> - True for discrete-time filter with real coefficients.
% <a href="matlab:help dfilt/isscalar">isscalar</a> - True if discrete-time filter is scalar.
% <a href="matlab:help dfilt/issos">issos</a> - True if discrete-time filter is in second-order sections form.
% <a href="matlab:help dfilt/isstable">isstable</a> - True if the filter is stable.
%
% Second-order sections (DSP System Toolbox Required)
% <a href="matlab:help dfilt/scale">scale</a> - Scale second-order sections.
% <a href="matlab:help dfilt/scalecheck">scalecheck</a> - Check scale of second-order sections.
% <a href="matlab:help dfilt/scaleopts">scaleopts</a> - Create options object for sos scaling.
% <a href="matlab:help dfilt/specifyall">specifyall</a> - Fully specify fixed-point filter settings.
% <a href="matlab:help dfilt/cumsec">cumsec</a> - Vector of cumulative second-order section filters.
% <a href="matlab:help dfilt/reorder">reorder</a> - Reorder second-order sections.
%
% Fixed-Point (DSP System Toolbox and Fixed-Point Designer Required)
% <a href="matlab:help dfilt/qreport">qreport</a> - Quantization report.
% <a href="matlab:help dfilt/autoscale">autoscale</a> - Dynamic range scaling.
% <a href="matlab:help dfilt/set2int">set2int</a> - Scale the coefficients to integer numbers.
% <a href="matlab:help dfilt/norm">norm</a> - Filter norm.
% <a href="matlab:help dfilt/normalize">normalize</a> - Normalize filter coefficients.
% <a href="matlab:help dfilt/denormalize">denormalize</a> - Restore the coefficients from a NORMALIZE.
% <a href="matlab:help dfilt/double">double</a> - Cast filter to double-precision floating-point arithmetic.
% <a href="matlab:help dfilt/reffilter">reffilter</a> - Reference double-precision floating-point filter.
% <a href="matlab:help dfilt/noisepsd">noisepsd</a> - Power spectral density of filter output due to roundoff noise.
% <a href="matlab:help dfilt/noisepsdopts">noisepsdopts</a> - Create options object for noisepsd computation.
% <a href="matlab:help dfilt/freqrespest">freqrespest</a> - Frequency response estimate via filtering.
% <a href="matlab:help dfilt/freqrespopts">freqrespopts</a> - Create options object for frequency response estimate.
%
% Multi-stages
% <a href="matlab:help dfilt/cascade">cascade</a> - Cascade filter objects.
% <a href="matlab:help dfilt/parallel">parallel</a> - Connect filters in parallel.
% <a href="matlab:help dfilt/nstages">nstages</a> - Number of stages in a cascade or parallel filter.
% <a href="matlab:help dfilt/addstage">addstage</a> - Add a stage to a cascade or parallel filter.
% <a href="matlab:help dfilt/removestage">removestage</a> - Remove a stage in a cascade or parallel filter.
% <a href="matlab:help dfilt/setstage">setstage</a> - Set a stage in a cascade or parallel filter.
%
% Copyright 2006-2010 The MathWorks, Inc.