ELEC ENG: Sound Identification Project.

Phew... I'm really proud I finished this in only 4 hours where it took the guys a whole day to the point they slept in university, even though my approach is quite not totally efficient and needs some editing to be perfect, but we can say that the code is 90% done. What am I talking about? I had this project to do in Engineering called sound identification where you have to save your voice and store it in the device and then gain access to the device using your voice again.

So basically, you record in yout voice and get the signal in time domain, transform it into frequency using fourier transform functino (fft) and get the absolute maximum of that frequency some couple of times after repeating the same method and then specifying a range for your absolute maximum.

The programe I made is again not efficient, because the frequency is dependant on how loud you get. but this problem is going to be fixed hopefully soon, all I need is specifying some ranges to prevent the user of being either too loud or too low.

Fs = 8000;

durata= input('Insert the duration of the recording (in seconds):');

micrecorder = audiorecorder(Fs,16,1);

disp('Now, speak into microphone...');

record(micrecorder,durata);

while (isrecording(micrecorder)==1)

disp('Recording...'); pause(0.5); end

disp('Recording stopped.');

y = getaudiodata(micrecorder, 'uint8');

w=fft(single(y));

z=max(abs(w));

if((z>2040570 && z<2050000))>

elseif ((z<2020570))>