This Science Fair, I wanted to see what the vocal chords do, what they have in relation to the voice, and how they change according to conditions. I have set up an experiment where I record my lowest voice through an oscilloscope on November 9^th and save it. From this time until February, I repeated a paragraph every day at my lowest voice. On February 1^st, a couple of months later, I said the exact same sentence into the oscilloscope and see if the sound wave dramatically differs from the one I recorded in November. I have found that the sound wave has dramatically differed and my voice is now much lower than it was. This may be my voice changing naturally over time, but there was still a great difference in the sound waves.