In and around public radio there is growing chorus of people talking about "vocal fry," the low vibrations in the voice that usually come at the end of sentences. Critics say it makes for bad sound, but if that's true, why are only women being criticized for it? In this piece, our host, Anne Strainchamps, talks with NPR pioneer Susan Stamberg, podcast star Ann Friedman, and voice specialists about this so-called "problem."