MusicianCV · TR

Tempo map

Open the interactive module

Timing and files

Split a note spanning a tempo change at that boundary. Convert each part to seconds using its own tempo.

Tempo map · 120 → 60 BPM → 500 → 1000 ms/♩

File meta events, event positions and live transport messages serve different functions. Inspect this example in its proper context using an SMF reader or MIDI monitor.

Example

Code or time base / interpretation · 120 → 60 BPM / 500 → 1000 ms/♩

Code or time base / interpretation

120 → 60 BPM 500 → 1000 ms/♩

Try it

What unit is being used for timing?

AnswerCheck the file’s PPQ or SMPTE division. MIDI Clock on the wire uses 24 pulses per quarter independently of SMF tick resolution.

Related topics

Ticks, PPQ and tempo maps

References

MIDI specifications and reference tables

Subject-expert review pending.