The Diversity of Sounds, concerning Acute and Grave

This has 3 ways:

1. Sounds which are emitted at once and together from diverse bodies

This leads to Consonancies.

2. Those which are emitted successively from the same voice

This leads to Degrees

3. In those which are emitted successively from diverse voices, or sonorous bodies

This leads to Dissonancies, which come nearer to Consonancies.

Where it is manifest that in Consonancies the Diversity of Sounds ought to be less than in Degrees.

This is 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.