BPM Tester

BPM Tester enables tempo estimation from two primary input streams: a tap-based input where the user records beat intervals by tapping, or an audio upload where a short recording is analyzed for rhythmic content. A manual BPM option allows direct entry when tempo is known. The tool outputs a BPM value, a confidence score, and an optional tempo range to reflect tempo stability over the analysis window. Target users include musicians, educators, producers, and researchers.
Conceptually, the tool detects onsets in the input and derives a pulse by applying short-time energy and spectral flux analysis, followed by autocorrelation to identify the dominant tempo. The process includes smoothing and outlier rejection to reduce noise, and a windowed analysis to accommodate slight tempo changes. Results are presented in BPM with an optional range and a confidence metric.
Use cases include verifying the tempo of reference tracks, preparing practice sets, syncing tracks in live sets, and auditing metronome accuracy in studio or classroom settings. The unique value lies in multi-input support, fast turnaround, and export options for further analysis. Compared with manual counting, BPM Tester delivers objective, repeatable measurements with accompanying confidence scores.
Core features include input mode selection, tap capture, audio upload with sample rate handling, automatic BPM estimation, confidence scoring, optional tempo range, and export as JSON or CSV. Edge cases such as very short samples, noisy material, or ambiguous tempos are handled with fallbacks and clear flags to guide interpretation. The tool aims to be practical for both quick checks and structured study.