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Espressif Audio Development Framework

Documentation Status

Espressif Systems Audio Development Framework (ESP-ADF) is the official audio development framework for the ESP32 and ESP32-S2 SoCs.

Overview

ESP-ADF supports development of audio applications for the Espressif Systems SoCs 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 and etc.
  • Play music from sources: HTTP, HLS (HTTP Live Streaming), SPIFFS, SDCARD, A2DP-Source, A2DP-Sink, HFP and etc.
  • Integrate Media services such as: DLNA, VoIP and etc.
  • Internet Radio
  • Voice recognition and integration with online services such as Alexa, DuerOS and etc.

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

ADF Block Diagram

Developing with the ESP-ADF

Quick Start

You need one of ESP-IDF versions described in ESP-ADF Releases, one of audio boards below and headphones.

Note: If this is your first exposure to ESP-IDF, proceed to Getting Started documentation specific for ESP32 or ESP32-S2 SoCs.

Click on one of audio boards shown below to set up and start using ESP-ADF.

Hardware

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

ESP32-LyraT Development Board ESP32-LyraTD-MSC Development Board
ESP32-LyraT Development Board ESP32-LyraTD-MSC Development Board
Getting Started with ESP32-LyraT Getting Started with ESP32-LyraTD-MSC
ESP32-LyraT-Mini Development Board ESP32-S2-Kaluga-1 Kit (ESP-LyraT-8311A)
ESP32-LyraT-Mini Development Board ESP32-LyraT-Mini Development Board
Getting Started with ESP32-LyraT-Mini Getting Started with ESP32-S2-Kaluga-1 Kit
ESP32-Korvo-DU1906 Development Board
ESP32-Korvo-DU1906 Development Board
Getting Started with ESP32-Korvo-DU1906

ESP32-LyraT

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.

ESP32-LyraT Development Board Overview

ESP32-LyraTD-MSC

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

ESP32-LyraTD-MSC Development Board Overview

ESP32-LyraT-Mini

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

ESP32-LyraT-Mini Development Board Overview

ESP32-S2-Kaluga-1 Kit (ESP-LyraT-8311A)

The ESP32-S2-Kaluga-1 multimedia kit is based on ESP32-S2 and features several extensions including ESP-LyraT-8311A audio board (below) as well as camera, LCD, and touch pad boards.

ESP-LyraT-8311A Extension Board

ESP32-Korvo-DU1906

ESP32-Korvo-DU1906 is an Espressif audio development board with an ESP32-DU1906 module as its core, integrating Wi-Fi, Bluetooth, Bluetooth Low Energy RF and voice/speech signal processing functions.

ESP32-Korvo-DU1906 Development Board

Examples

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

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