jsantell/dancer.js
high-level audio API, designed to make sweet visualizations observed · 2026-08-28
Health v2 · maintenance only
32/100
- Activity 0
- Release rhythm 35
- Longevity 100
Flags: no_releases
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 5275
- days_rel: n/a
- days_push: 1506
- n_releases_24m: 0
Adoption not part of the score
2096 stars · 202 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
dancer.js is a high-level JavaScript audio API that wraps Web Audio API (with Audio Data API and Flash fallbacks) to expose real-time waveform and frequency data for building audio visualizations. It provides kick detection, time-based section callbacks, and an extensible plugin system for mapping audio data to arbitrary visual effects.
Use cases
- create music visualizations in the browser
- get real-time frequency spectrum data from audio
- detect beats or kicks in a song to trigger animations
- sync visual callbacks to specific sections of a track
- analyze waveform data from an audio element
- build an audio player with reactive graphics
When to choose
- you need a simple high-level API over Web Audio for visualization projects
- you want beat/kick detection and time-based callbacks out of the box
- you need legacy browser support via Audio Data API or Flash fallback
When to avoid
- you need modern, actively maintained audio tooling - the core code dates to 2014 and Flash fallback is obsolete
- you only need low-level Web Audio API access, use AnalyserNode directly
- you are building non-browser or streaming audio applications
Facets
library · maturity maintenance
audio-processing animation plugin-system web-development graphics media browser web-audio-api audio-visualization music-visualizer frequency-analysis waveform kick-detection flash-fallback audio javascript web
1 source
- readme: https://github.com/jsantell/dancer.js · fetched 2026-08-28 · a30ebc31d729
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| jsantell/dancer.js | main | 32 |
For agents
markdown · JSON · MCP: product_card(name="jsantell/dancer.js")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem