An abrasive sound is a sound that is harsh and grating, often described as raspy. The term 'RASP' is used to describe this type of sound, which is made up of a series of rough or grating noises. It is often associated with the sound of metal being scraped against a surface, such as a file being used to shape metal. Abrasive sounds can also be created by vocal cords, such as when someone speaks in a hoarse or raspy voice.