Record a set log and use the display
Log the night's tempos as CSV, one line per track, and put the number on a fullscreen monitor for FOH or the stage.
On this page
The set log
The set log records the night as one line per tempo. While TempoSense is locked it takes one sample per second; a track change opens a new segment once a different tempo (more than 3 % away) has held for three seconds, otherwise the running segment absorbs the sample and refines its average.
- Press ▶ Start listening and let it lock.
- In Set log, press ● Record. The header shows
recording · nwith the number of segments so far. - Play the set. Press ■ Stop recording at the end.
- Export CSV downloads the file. Clear empties the log.
The CSV has these columns: segment, start, end, duration_s, bpm, half, quarter, eighth, mode, started_at. Start and end are clock times since
the recording began; half, quarter and eighth are the ÷2 / ÷4 / ÷8
values; mode is the detector that was active; started_at is the
recording's start as an ISO timestamp.
Only the log of tempos is stored — never audio. Nothing is uploaded.
The fullscreen display
Display ⛶ puts the big number, the ÷2 / ÷4 / ÷8 row, the beat dot and
the bar dots on a black screen — for a FOH monitor, a stage screen or a
second display. It uses the browser's fullscreen where available and
shows the same status tag (live, held, drifting) as the main screen.
Close it with the ✕ in the corner or Esc. Detection keeps running underneath, so Hold, ½× / 2× and MIDI output all stay in effect.
On a phone
Detection, layers, delay table, set log and display all work on the phone's built-in mic. iOS exposes one audio input; a USB interface becomes the default input while it is connected. MIDI output needs a laptop with Chrome, Edge or Firefox — see Send the tempo to Ableton or LiveProfessor.
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