whEn A mAChinE AnAlysEs thE FrEquEnCiEs usED By A pArtiCulAr voiCE AnD DrAws A grAph oF thEm, sounD is ______ ElECtroniCAlly into A pAttErn oF linEs.
A．rEliEvED
B．ConvErtED
C．mAgniFiED
D．Burst