Question 1

How does the BPM detector find the tempo?

Accepted Answer

The microphone mode analyses the audio energy over time and detects onsets (sudden increases in loudness) that typically correspond to beats. The intervals between onsets are converted to beats per minute. Tap mode averages the time between your taps, which is often more accurate for complex rhythms.

Question 2

Which mode is more accurate?

Accepted Answer

Tap tempo is usually more reliable because it uses your own sense of the beat. Microphone detection works well for songs with a strong, steady drum beat but can struggle with complex polyrhythms, ambient music or noisy environments.

Question 3

What BPM ranges do different genres have?

Accepted Answer

Ballad ~60–80 BPM, hip-hop ~80–100, pop ~100–130, house ~120–130, techno ~120–135, drum and bass ~160–180, dubstep ~140, and gabber ~180–220. Slow paces feel relaxed; fast paces feel energetic.

Question 4

Is my audio uploaded anywhere?

Accepted Answer

No. All beat analysis happens entirely in your browser. The microphone stream is processed locally and never recorded or sent to any server.