Noise from a diaphragmatic spasm is a medical condition known as Hiccups (HIC). It is caused by an involuntary contraction of the diaphragm, which is the muscle that separates the chest and abdominal cavities. This contraction causes a sudden intake of air, resulting in a 'hic' sound. Hiccups can be caused by a variety of factors, including eating too quickly, drinking carbonated beverages, or even excitement.