% PWSK_DSP TOOLBOX
% Matlab functions to accompany the companian book
%     Digital Signal Processing using Matlab
%             by Proakis and Ingle
%             Publisher: PWS-Kent
%             Copyright 1995
% Version 1.00
%
% Discrete Signals and Systems
%       conv_m          - Modified linear convolution routine
%       conv_tp         - Linaer convolution using Toeplitz matrix
%       evenodd         - Real signal decomposition into even and odd parts
%       impseq          - Generates x(n) = delta(n-n0); n1 <= n,n0 <= n2
%       sigadd          - signal addition operation
%       sigfold         - signal folding operation
%       sigmult         - signal multiplication operation
%       sigshift        - signal shifting operation
%       stepseq         - Generates x(n) = u(n-n0); n1 <= n,n0 <= n2
%
% Discrete-Time Fourier Transform
%
% The z-Transform
%       pfe2rfz         - Rational function from Partial Fraction Expansions in z-Domain
%       rf2pfez         - Partial Fraction Expansion from rational function in z-Domain
%
% Discrete Fourier Transform
%       circevod        - real signal decomposition into circular-even and circular-odd parts
%       circonvt        - circular convolution in the time-domain
%       cirshftt        - Circular shift in the time-domain
%       dfs             - Computes Discrete Fourier Series Coefficients
%       dft             - Computes Discrete Fourier Transform
%       hsolpsav        - High-speed Overlap-Save method of block convolutions using FFT
%       idfs            - Computes Inverse Discrete Fourier Series
%       idft            - Computes Inverse Discrete Transform
%       mod             - Computes m = n mod N = ((n))
%       ovrlpsav        - Overlap-Save method of block convolution
%
% Digital Filter Structures
%       cas2dir         - CASCADE-to-DIRECT form conversion
%       casfiltr        - CASCADE form realization of IIR and FIR filters
%       cplxcomp        - Compares two complex pairs
%       dir2cas         - DIRECT-form to CASCADE-form conversion
%       dir2fs          - Direct form to Frequency Sampling form conversion
%       dir2ladr        - IIR Direct form to pole-zero Lattice/Ladder form Conversion
%       dir2latc        - FIR Direct form to All-Zero Lattice form Conversion
%       dir2par         - DIRECT-form to PARALLEL-form conversion
%       ladr2dir        - Lattice/Ladder form to IIR Direct form Conversion
%       ladrfilt        - LATTICE/LADDER form realization of IIR filters
%       latc2dir        - All-Zero Lattice form to FIR Direct form Conversion
%       latcfilt        - LATTICE form realization of FIR filters
%       par2dir         - PARALLEL-to-DIRECT form conversion
%       parfiltr        - PARALLEL form realization of IIR filters
%
% FIR Filter Design
%       blackman        - Blackman window function
%       freqz_m         - Modified version of freqz routine
%       Hr_Type1        - Computes Amplitude response of Type-1 LP FIR filter
%       Hr_Type2        - Computes Amplitude response of Type-2 LP FIR filter
%       Hr_Type3        - Computes Amplitude response of Type-3 LP FIR filter
%       Hr_Type4        - Computes Amplitude response of Type-4 LP FIR filter
%       ideal_lp        - Ideal LowPass filter impulse response computation
%
% IIR Filter Design
%       afd_butt        - Analog Lowpass Filter Design: Butterworth
%       afd_chb1        - Analog Lowpass Filter Design: Chebyshev-1
%       afd_chb2        - Analog Lowpass Filter Design: Chebyshev-2
%       afd_elip        - Analog Lowpass Filter Design: Elliptic
%       cheb1hpf        - IIR Highpass filter design using Chebyshev-1 prototype
%       freqs_m         - Modified version of freqs routine
%       imp_invr        - Impulse Invariance Transformation from Analog to Digital Filter
%       sdir2cas        - DIRECT-form to CASCADE-form conversion in s-plane
%       u_buttap        - Unnormalized Butterworth Analog Lowpass Filter Prototype
%       u_chb1ap        - Unnormalized Chebyshev-1 Analog Lowpass Filter Prototype
%       u_chb2ap        - Unnormalized Chebyshev-2 Analog Lowpass Filter Prototype
%       u_elipap        - Unnormalized Elliptic Analog Lowpass Filter Prototype
%       zmapping        - Frequency-band transformation in the z-domain
%
% Adaptive Filtering
%       lms             - LMS Algorithm for Coefficient Adjustment
%
% Digital Communications
%       mulaw_c         - mu-law compressor
%       mulaw_e         - mu-law expander
%       quantize        - Quantize signal to B bits
%
% Miscellaneous
%	contents	- contents file (you are reading it)
%       db2delta        - Conversion from Relative dB specs to Absolute delta specs.
%       delta2db        - Conversion from Absolute delta specs to Relative dB specs