Non enim inter duo intervalla, cum chordarum sonitus aut vocis cantus factus fuerit, nec in tertia aut sexta aut vii possunt consonantiae fieri, sed, uti supra scriptum est, diatessaron et diapente et ex ordine disdiapason convenientiae ex natura vocis congruentis habent finitiones.
For concords cannot arise between two intervals, when the sound of strings or the song of the voice is uttered, nor between three or six or seven; but, as we wrote above, the diatessaron and diapente up to the disdiapason are concords which have limits arising from the nature of the voice.
final_alignments\Vitruvius_Architecture_Book_5.json