According to one of Spence's sonic taste experiments, sound had a significant effect on how participants perceived the chips' crispiness and staleness. With the help of headphones, the research team manipulated the volume of the crunch as participants took a bite. The louder the crunch, the likelier they were to perceive the chips as crispy and fresh. And the fresher the potato chips are, the harder it will be for you to stop eating them!