I am experimenting with an iOS app to document in actual time from a MIDI keyboard utilizing AudioKit (v5.6.1). Utilizing the receivedMIDINoteOn() and receivedMIDINoteOff() MIDIListener delegate strategies I obtain the notice quantity, velocity, channel and timestamp. I need to calculate the length of the notice in milliseconds in order that I can compute the notice worth based mostly on the present tempo setting. Is it potential to calculate this utilizing the timestamps?
As an experiment I performed a single notice for about 10 seconds (+/- 200ms) and received the next timestamp values: notice on: 115071237234, notice off: 115315013613, a distinction of 243776379. The documentation doesn’t present any details about the interpretation of those values. After intensive web looking out I’ve been unable to search out any discusion of this topic.
Wouldn’t it make extra sense to make use of a Stopwatch occasion and compute time deltas utilizing elapsed time of occasion receipt?