Practice Pad Trainer

Play along

Drill Tempo 80 bpm View Sticks Lead click

1 · Setup

Exercise

Tempo 85 bpm

My kit kick pad snare pad

Click metronome drop out for 2 bars every 4

Run length bars

2 · Calibration

Run these in order, on the mic and pads you are actually using. Every number the app reports afterwards depends on them.

Noise floor

Not measured.

Input latency

Not measured.

Pad separability

Not measured.

3 · Practice

Input

bar 0 / 8

Each dot is one hit, placed left of centre if early and right if late. The centre line is the beat. kick slot snare slot ±1 SD

4 · Results

Mean offset — accuracy · rushing or dragging

Std deviation — consistency · the one that matters

Hits matched — 0 missed · 0 extra

Distribution of this run's offsets. Earlier runs are listed below, not mixed in — a histogram spanning two tempos would describe neither.

When you want this to be exact

Two mics into a 2-in interface. One on each pad: the channel is the drum, so classification stops being a guess. Biggest single improvement available.
Piezo contact triggers. A trigger on each pad into a cheap MIDI module removes acoustics from the problem entirely. MidiHitSource is already wired for it.
An e-kit. Same path as triggers, no changes needed here.

Diagnostics

Record pad fixture

Records 15 seconds while you hit one pad about 20 times, then downloads a .wav. Drop both files into tests/fixtures/real/ and the classifier test reports on your actual pads instead of the synthetic stand-ins.