The humanvoice. the human vocal tract is a pipe that extendsabout 16 cm from the lips to thevocal folds (also called the "vocal cords") near the middle of yourthroat. the vocal folds behave rather like the reed of a clarinet, and the vocal tract acts like a stopped pipe. estimate the firstthree standing-wave frequencies of the vocal tract. use v = 344 m/s. (the answers are only anestimate, since the position of lips and tongue affects the motionof air in the vocal tract.)lowest frequencyhzsecond frequencyhzthird frequencyhz