7.2. Incoming and Outgoing Evidence

Harmonic DJ analyzes the first and second complete halves of each track. In the default start/end matching scope, the first half supplies incoming evidence and the second half supplies outgoing evidence.

A directed transition therefore compares the source’s outgoing key with the destination’s incoming key. Reversing the tracks asks a different question and can produce a different result.

Whole-track matching recombines both halves by analyzed duration and classifies one key. It is useful when one stable summary is preferable, while start/end matching retains more information about how a track may enter and leave.