wn_gen.m

来自「FPGA开发光盘各章节实例的设计工程与源码」· M 代码 · 共 21 行

PI=3.1415926;
DAT_WIDTH=8;
POINT=32;

WN_DOT=POINT/2;
theta=[0:1/WN_DOT*PI:(WN_DOT-1)/WN_DOT*PI];
cos_ary=cos(theta);
sin_ary=sin(theta);

wn_r_t=round(cos_ary*2^(DAT_WIDTH-1));
for i=1:WN_DOT;
    if wn_r_t(i)<0
        wn_r(i)=2^DAT_WIDTH+wn_r_t(i);
    else
        wn_r(i)=wn_r_t(i);
    end;
end;
wn_i=round(sin_ary*2^(DAT_WIDTH-1));