This process forms a large and irregularly vibrating mass within the vocal folds that produces the characteristic low popping or rattling sound when air passes through the glottal closure.Vocal fry is thought to have become more common among young female speakers of American English in the 21st century, with the style of speaking being considered informal, nonaggressive and urban-oriented, though there is a lack of evidence to support this.Some evidence exists of vocal fry becoming more common in the speech of young female speakers of American English in the early 21st century,[5][6][7][8][9] but its frequency's extent and significance are disputed.[10][11] Researcher Ikuko Patricia Yuasa suggests that the tendency is a product of young women trying to infuse their speech with gravitas by means of reaching for the male register and found that "college-age Americans ... perceive female creaky voice as hesitant, nonaggressive, and informal but also educated, urban-oriented, and upwardly mobile.Vocal fry is also used in metal music, usually in combination with air from the diaphragm,[citation needed] in order to create a "growl" or "scream", which sounds aggressive and harsh.[23][better source needed] The vocal fry register – either singing or speaking – is commonly employed by many female celebrities of the 21st century: including Ariana Grande, Britney Spears, Emma Stone, Katy Perry, Kesha, Kim Kardashian, and Lady Gaga.
Short demonstration of vocal fry
Pathé news reel where the speaker uses vocal fry termination (1932).