soundcard_acquiring.m

来自「声卡采集的程序,可设置采样频率,位长,采样时间等参数.可采样8k-44.1kHz」· M 代码 · 共 23 行

ai=analoginput('winsound');
addchannel(ai,1);
Fs=8000;
ai.SampleRate=Fs;
t=2;
start(ai);
data=get(ai,t* Fs);
stop(ai);
delete(ai);

ai=analoginput('winsound');
addchannel(ai,1);
freq=8000;
set(ai,'SampleRate',freq);
duration=2;
set(ai,'SamplesPerTrigger',duration*freq);
start(ai);
data=getdata(ai);
fftdata=abs(fft(data));
mag=20*log10(fftdata);
mag=mag(1:end/2);
delete(ai);
clear ai;