matlab 录音并显示波形

fs=16000;           %取样频率duration=2;         %录音时间fprintf('Press any key to start %g seconds of recording...\n',duration);pause;fprintf('Recording...\n');y=wavrecord(duration*fs,fs, 'int16');         %duration*fs 是总的采样点数fprintf('Finished recording.\n');fprintf('Press any key to play the recording...\n');pause;wavplay(y,fs);i=1:1:fs*2;plot(i, y);