sine.m

自己用MATLAB编写dsp5509的中的sine.dat文件

% Creat a data file of the sinewave, which DSP chip can load .% 
clear all; 
Fs=44100; %Sampling Frequecy of AIC23=44.1KHz% 
f1=500; %Frequency of Sine Wave" 
for m=1:2048;
x=sin(2*pi*f1*[0: 2048]/Fs); % Number of Sampling point=2048, and create sine wave% 
if x(m)>=0 y(m)=x(m);
else y(m)=2+x(m);
end;
end;
y=y*32768;
fid=fopen('sine.dat','w');%打开文件
fprintf(fid,'1651 1 0 1 0\n');%输出文件头
fprintf(fid,'0x%x\n',round(y));%输出 
fclose(fid);