Compare
audioproxy vs Chord Mini
Short answer: Pick audioproxy if you want on-demand audio variant rendering; pick Chord Mini if you want AI-powered chord and beat detection. Both are free and open source.
audioproxyAudio variants, addressed by URL
Chord MiniOpen source chord & beat detection application. Get your favorite songs transcribed!Which to pick
Pick audioproxy if you want…
- On-demand audio variant rendering
Pick Chord Mini if you want…
- AI-powered chord and beat detection
- Audio analysis
Side by side
- What it is
- audioproxy:Audioproxy renders audio variants on demand via signed URLs, streaming and caching them without a job queue.
- Chord Mini:Chord Mini is an open-source app that detects chords, beats and synchronizes lyrics for uploaded songs.
- Best for
- audioproxy:On-demand audio variant rendering
- Chord Mini:AI-powered chord and beat detection
- Who it’s for
- audioproxy:Developers needing on-the-fly audio transcoding and variant generation.
- Chord Mini:Musicians, developers, and researchers needing automated music transcription.
- Pricing
- audioproxy:Open source
- Chord Mini:Open source
- Starting price
- audioproxy:Free
- Chord Mini:Free
- Free plan or trial
- audioproxy:Free to use
- Chord Mini:Free to use
- Open source
- audioproxy:Yes, 7 GitHub stars
- Chord Mini:Yes, 397 GitHub stars
- Works with
- audioproxy:Elixir, Rails, Hotwire
- Chord Mini:—
audioproxy features
- URL-based API. All variant options are encoded in the URL, which also serves as the cache key.
- Streaming render. The first request streams encoded audio while it is being generated.
- Cache & range support. Subsequent requests hit a cached file with full range-request capability.
- S3 or directory source. Reads source files from a mounted directory or any S3-compatible bucket.
- Audio processing options. Supports format, bitrate, VBR, resample, trim, fade, gain, loudness normalization and speech enhancement.
- Peak data format. Can output waveform min/max pairs as JSON or binary for UI rendering.
- Health & metrics. Provides /health, /ready and Prometheus metrics endpoints.
- Signed URLs. Requests are signed GETs; signatures are excluded from the cache key for shared variants.
Chord Mini features
- AI chord detection. Detects chords using multiple deep-learning models with 301 chord labels.
- Beat-aligned grid. Shows real-time chord progression synced to audio with automatic time-signature detection.
- Roman numeral & key analysis. Provides Roman numeral analysis and key detection via Gemini AI.
- Lyrics synchronization. Displays synced lyrics (LRC files or AI-generated) alongside the music.
- Song segmentation overlay. Marks intro, verse, chorus, bridge and outro sections on the timeline.
- Piano visualizer & MIDI export. Shows falling-note visualizations for multiple instruments and allows MIDI export.
audioproxy vs Chord Mini FAQ
What is the difference between audioproxy and Chord Mini?+
Chord Mini: Open-source chord and beat detection tool, unrelated to variant generation.
Should I use audioproxy or Chord Mini?+
Pick audioproxy if you want on-demand audio variant rendering. Pick Chord Mini if you want AI-powered chord and beat detection or audio analysis.
Is audioproxy or Chord Mini free?+
Yes, both are free and open source.
Is audioproxy or Chord Mini open source?+
Yes, both are open source: audioproxy (audioproxy/audioproxy on GitHub, Apache-2.0 license) and Chord Mini (ptnghia-j/ChordMiniApp on GitHub, MIT license).
On DevHunt
audioproxy
12 upvotes · Launched on DevHunt on Sep 15, 2026
Based on each tool's website and DevHunt data. Details may change; check the official sites.