The objective of this lab is to write software which can distinguish your own voice from your partner's voice. We can almost instantly recognize a familiar voice, and we want to try to teach the computer to do the same thing.
The first step is to record your own voice on the computer. The computers are fitted with microphones, and in the Accessories Menu there is a Multimedia sub-menu.In this you will find the Audio recorder. You will use the same workstation for the entire class. To start, go in the directory F:/Matlab6p1/work and create a directory with your first name.
Next, you will record your first name twice. Use the sound recorder to do that. The sound is being saved in files with the extension ``wave''. Save two files containing each a recording of your first name. In order to keep the recordings clean we need to keep the noise level down. Store the recordings in ``F:/matlab6p1/work/firstname''.
Next, open matlab6.1, type
cd firstname
which connects you to the directory where your recordings are saved. We will call them ``file1'' and ``file2''. To import these WAV-files into MATLAB type
y1=wavread('file1');
The sound is now stored in the vector y1. You can plot the sound by typing
plot(y1);