# PaulStoffregen/Audio

Teensy Audio Library

Repository: https://github.com/PaulStoffregen/Audio
Canonical: https://ross.abutalabs.com/products/paulstoffregen-audio
Homepage: http://www.pjrc.com/teensy/td_libs_Audio.html
Language: C++
License Family: other
Last push: 2026-05-05T15:20:36+00:00

## Health v2 (maintenance only)
Score: 59/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 80, release rhythm 8, longevity 100
- inputs: {"age_days": 4624, "days_push": 120, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1258, forks 431 (observed 2026-08-28T04:04:09.511423+00:00)

## What it is
A 16-bit, 44.1 kHz streaming audio library for Teensy 3.x and 4.x microcontrollers, providing objects for playback, recording, synthesis, effects, filtering, mixing, and analysis. It includes a graphical design tool for routing audio objects and exports Arduino-compatible code.

## Use cases
- build a polyphonic synthesizer on Teensy
- record and play back audio from an SD card
- add effects and filtering to audio streams
- mix multiple audio inputs and outputs simultaneously
- stream audio over USB to a PC
- design audio signal routing graphs visually

## When to choose
- you are building an audio project on Teensy 3.x or 4.x hardware
- you need real-time CD-quality audio processing in Arduino sketches
- you want a large library of ready-made synthesis, effects, and filter objects

## When to avoid
- you are not using Teensy hardware
- you need higher bit depth or sample rates than 16-bit/44.1 kHz
- you need a general-purpose desktop audio framework

## Facets
- artifact type: library
- maturity: stable
- function: audio-processing, sdk
- domain: embedded-systems, hardware
- platform: embedded, cpp
- tags: teensy, arduino, synthesis, signal-processing, real-time-audio, audio

## Member repositories
- PaulStoffregen/Audio (main) score 59

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:09.511423+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 2026-08-30T05:05:33.692588+00:00, confidence not recorded.
  - readme: https://github.com/PaulStoffregen/Audio (fetched 2026-08-28T04:04:09.511423+00:00, sha 2ecfff16ec45)
  - homepage: http://www.pjrc.com/teensy/td_libs_Audio.html (fetched 2026-08-29T12:17:12.541089+00:00, sha 8ff4b5cbd014)
  - site_page: https://www.pjrc.com/teensy/td_download.html (fetched 2026-08-29T12:17:12.552102+00:00, sha e20d8aeb27b4)
- Data as of 2026-08-30T08:39:29.467469+00:00.