odd_order_cascaded_lp_imp.m

声音过滤器工具大集合.

function y = odd_order_cascaded_LP_imp(x, a1, b1, a, b)
%ODD_ORDER_CASCADED_LP_IMP - Implements Nth-Order Low-Pass Filter by cascading
%                            a single first order section with M second order 
%                            low-pass sections, where N = 2M + 1.
%               
%     usage:  y = odd_order_cascaded_LP_imp(x, a1, b1, a, b)
%     
%           x = input vector
%           y = output vector
%          b1 = Two column vector, numerator coefficients of first-order section
%          a1 = Two column vector, denominator coefficients of first-order section
%           b = M x three matrix, numerator coefficients of even-order network
%           a = M x three matrix, denominator coefficients of even-order network
%           N = Scalar, filter order (odd)
%           M = Scalar, number of second order sections
%
%     See also odd_order_cascaded_LP.m 

%   References:
%      [1]  John Lane, Jayant Datta, Brent Karley, Jay Norwood, "DSP Filters", 
%           PROMPT Publications(an imprint of Sams Technical Publishing), 
%           Indianapolis, IN, 2001, page 335.
%           Book's website: www.dspaudiocookbook.com

%  Copyright (c) 2005 Bo餫