Examining the voice of experience
http://www.thestar.com/News/Ideas/article/34980203/23/2008
"When a person hits old age, their vocal apparatus – like their eyes, ears and the rest of their body – gets worn out. In order to speak, we expel air from the lungs. It passes through the vocal folds (or cords), which are ligaments in the larynx (or voice box), causing them to vibrate, which in turn causes sound."
