input.m

有关iir滤波器设计中的系数产生和输入产生

clear all;
close all;
% 
    F1=3000; F2=4000; F3=7001;
    Fsample=3E4;   % 100KHz采样率
    t = [1:256] * 1/Fsample
    xn = sin(2*pi*F1 * t) + sin(2*pi*F2 * t) + sin(2*pi*F3 * t); 
    figure( );
    hh = plot(xn);
    set(hh,'linewidth',3);%,'marker','o');
    grid on;
    xn = fix(xn/3 * (2^15-1));
    streamr = fopen('C:\tic2xx\myprojects\Prog\INPUT.inc','w');
    %fseek(streamr,740*2*(m+4),'bof')
    fprintf( streamr,'INPUT_P:       .sect      "INPUT_P" \n' );
    for i=0:31
    fprintf( streamr,'      .word    ' );
    for j=1:7
        fprintf( streamr,'%d, ',xn(j+i*8));
    end
    fprintf( streamr,'%d ',xn(8+i*8));
    fprintf( streamr,'\n' );
    end
    fclose( streamr );