# pschatzmann/arduino-audio-tools

Audio Tools (a powerful Audio library for Arduino, PlatformIO, IDF)

Repository: https://github.com/pschatzmann/arduino-audio-tools
Canonical: https://ross.abutalabs.com/products/arduino-audio-tools
Language: C
License: GPL-3.0
License Family: copyleft
Topics: streaming, cmake, audio, music, dsp, arduino-library, commucation, decoding, encoding, arduino, fft, digital-signal-processing, codecs, rtttl
Last push: 2026-08-26T06:52:54+00:00

## Health v2 (maintenance only)
Score: 92/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 78, longevity 100
- inputs: {"age_days": 1953, "days_push": 7, "days_rel": 71, "gap_med": 40.5, "n_releases_24m": 15}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2368, forks 371 (observed 2026-08-28T04:06:41.591634+00:00)

## What it is
A header-only C++ audio processing library for Arduino, PlatformIO, and ESP-IDF that provides audio sources, sinks, encoders/decoders (MP3, AAC, WAV, FLAC), DSP filters, effects, and sound generators. It enables streaming, converting, and communicating audio on microcontrollers.

## Use cases
- play mp3 or flac files on an esp32 with arduino
- stream audio over wifi or bluetooth from a microcontroller
- add echo or reverb effects to arduino audio
- generate sine tones on a microcontroller
- decode aac streams on embedded devices
- build an internet radio with esp32
- apply equalizer and filters to audio on arduino

## When to choose
- building audio playback or streaming on Arduino, ESP32, or other microcontrollers
- you need codec encoding/decoding plus DSP effects in one embedded library
- you want header-only C++ integration with Arduino, PlatformIO, or ESP-IDF

## When to avoid
- developing desktop or server-side audio applications
- you need a non-GPL (permissively licensed) audio library
- you need high-fidelity multi-track audio production tooling

## Facets
- artifact type: library
- maturity: active
- function: audio-processing, streaming, serialization
- domain: embedded-systems, iot
- platform: embedded, iot, cpp
- tags: arduino, dsp, audio-codecs, header-only, esp32, sound-generation, audio-effects, audio

## Member repositories
- pschatzmann/arduino-audio-tools (main) score 92

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:41.591634+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:35:29.405514+00:00, confidence not recorded.
  - readme: https://github.com/pschatzmann/arduino-audio-tools (fetched 2026-08-28T04:06:41.591634+00:00, sha 59cff2087511)
- Data as of 2026-08-30T08:39:29.467469+00:00.