Espressif Systems Audio Development Framework (ESP-ADF) is the official audio development framework for the ESP32 chip.

ESP-ADF supports development of audio applications for the Espressif Systems ESP32 chip in the most comprehensive way. With ESP-ADF, you can easily add features, develop audio applications from simple to complex:

• Music player or recorder supports audio formats such as MP3, AAC, FLAC, WAV, OGG, OPUS, AMR, TS, EQ, Downmixer, Sonic, ALC, G.711...
• Play music from sources: HTTP, HLS(HTTP Live Streaming), SPIFFS, SDCARD, A2DP-Source, A2DP-Sink, HFP ...
• Integrate Media services such as: DLNA, VoIP ...
• Internet Radio
• Voice recognition and integration with online services such as Alexa, DuerOS, ...

As a general, the ESP-ADF features will be supported as shown below:

You need stable version of ESP-IDF to provide the toolchain, the ESP32-LyraT board and headphone connected.

Note: If this is your first exposure to ESP32 and ESP-IDF, proceed to Getting Started documentation.

Clone the ESP-ADF repository, set up ADF_PATH, and then compile, flash and monitor applications in the same way as when working with ESP-IDF.

git clone --recursive https://github.com/espressif/esp-adf.git
cd esp-adf/examples/get-started/play_mp3
make menuconfig
make flash monitor

If you clone project without --recursive flag, please goto the esp-adf directory and run command git submodule update --init before doing anything.

Espressif Systems has released a number of boards for ESP-ADF to develop ESP32 audio applications, including:

ESP32-LyraT Development Board	ESP32-LyraTD-MSC Development Board	ESP32-LyraT-Mini Development Board
Getting Started with ESP32-LyraT	Getting Started with ESP32-LyraTD-MSC	Getting Started with ESP32-LyraT-Mini

An open-source development board, supporting Espressif Systems’ ADF and featuring voice wake-up, a wake-up button and an audio player. Designed for smart speakers and smart-home applications.

• Getting Started with ESP32-LyraT
• ESP32-LyraT V4.3 Hardware Reference
• ESP32-LyraT Schematic (PDF)

Designed for smart speakers and AI applications. Supports Acoustic Echo Cancellation (AEC), Automatic Speech Recognition (ASR), Wake-up Interrupt and Voice Interaction.

• Getting Started with ESP32-LyraTD-MSC
• ESP32-LyraTD-MSC Schematic Lower Board A (PDF) , Upper Board B (PDF)

An open-source mono development board. Designed for connected smart speakers and smart-home audio applications.

• Getting Started with ESP32-LyraT-Mini
• ESP32-LyraT-Mini Schematic (PDF)

ESP-ADF is based on the application layer of ESP-IDF (Espressif IoT Development Framework). The git clone command, described under Quick Start above, automatically downloads specific version of the ESP-IDF alongside with ESP-ADF. Please take a look at Get Started

Check folder examples that contains sample applications to demonstrate API features of the ESP-ADF.

• Documentation for the latest version of https://docs.espressif.com/projects/esp-adf/. This documentation is built from the docs directory of this repository.
• The esp32.com forum is a place to ask questions and find community resources. On the forum there is a section dedicated to ESP-ADF users.
• Check the Issues section on github if you find a bug or have a feature request. Please check existing Issues before opening a new one.
• If you're interested in contributing to ESP-ADF, please check the Contributions Guide.