Abstract
The vowdl sounds as sung by voealists in the low-and high-registers, that is, the chest-voice and falseto, were recorded, with all possible eare by means of an electrical arrangement, and the acoustical difference of the two registers studied by analysing the reenrds. The results are experimental evidence for the view that the falsetto is prodeced by reed-like vibrations of f_??_e edges of the vocal chords, whereas the chestvoice is produeed by the opening and elosing of the air passge