This etymology is in the line of Philoxenus' theory and starts from a verb αὔω, from which is derived ἀϋτή (which is correct by modern standards). Then, through a formal change, from ἀϋτή is derived αὔδή: it implies a minimal change between two dental stops, replacing the voiceless [t] by the voiced [d]. It also implies getting rid of the hiatus in ἀϋτή by undoing the assumed diaeresis in ἀΰω (which is not attested). The semantic change from "clamour" to "voice" is not explained, because it probably seemed obvious that clamour is produced by many voices. In the Etym. Symeonis (see Parallels) the intermediate step is not ἀϋτή but a ghost word *αὐή. Interestingly, the Etym. Genuinum and Etym. Magnum also have the reverse derivation, αὐδή → ἀϋτή (Etym. Genuinum, alpha 1428: Ἀϋτή Β 153· βοή. εἴρηται παρὰ τὸ αὐδῶ αὐδή ἀϋδή καὶ τροπῇ ἀϋτή, ὡς ἐν τῷ μελετῶναι μελεδῶναι; Etym. Magnum, Kallierges p. 171: idem)