The Diversity of Sounds, concerning Acute and Grave

This has 3 ways:

1. Sounds which are emitted at once and together from diverse bodies
2. Those which are emitted successively from the same voyce;
3. in those which are emitted successively from divers voyces, or sonorous bodies

From the first manner, arise Consonancies: from the second, Degrees: from the third, Dissonancies, which come nearer to Consonancies. Where it is manifest that in Consonancies the Diversity of Sounds ought to be lesse, than in Degrees; because that would more tire, and disgust the Hearing…

This may be considered chiefly in three manners, or ways; either in sounds which are emitted at once and together from divers bodies; or in those which are emitted successively from the same voice.

Or lastly, in those which are emitted successively from divers voices, or sonorous bodies. From the first manner, arise Consonancies: from the second, Degrees: from the third, Dissonancies, which come nearer to Consonancies.

Where it is manifest that in Consonancies the Diversity of Sounds ought to be less, than in Degrees; because that would more tire, and disgust the Hearing.

in sounds, which are together emitted, then in those that are emitted successively. The same also, in proportion, may be affirmed concerning the Difference of Degrees from such Dissonancies, as are tolerated in relation.