Figure 4. Placement of interior CPs in relation to canonic midpoint, and the role of potential points of simultaneity

In Study No. 14 (top), canonic midpoint coincides with simultaneous beat in both voices, allowing CP to coincide with midpoint; in Study No. 36 (bottom), canonic midpoint does not coincide with simultaneous beat in all voices and canon is constructed so that CP is delayed to a later beat. Simultaneities noted are potential points of simultaneity as there is not necessarily an attack in each voice at these points