ESP-ADF is the official audio development framework launched by Espressif Systems for its ESP32 series chips, providing comprehensive support for audio application development. Whether it’s a simple music player or a complex voice recognition system, ESP-ADF can help you achieve it easily.
1. Introduction to ESP-ADF
ESP-ADF supports various chips from Espressif Systems, including ESP32, ESP32-S2, ESP32-C3, ESP32-C6, ESP32-S3, and ESP32-P4. It can help you achieve rich audio functionalities, such as:
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• Music playback and recording: Supports multiple audio formats including MP3, AAC, FLAC, WAV, OGG, OPUS, AMR, TS, etc., and provides audio processing features like EQ, Downmixer, Sonic, ALC, G.711.
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• Multiple music sources: Supports music playback from various sources including HTTP, HLS, SPIFFS, SDCARD, A2DP-Source, A2DP-Sink, HFP.
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• Media protocol integration: Supports protocols like DLNA, VoIP, RMTP, ESP-RTC (SIP, RTSP, and RTCP).
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• Video calls, video recording, and live streaming: Supports video-related functions.
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• Network broadcasting: Supports network broadcasting functionalities.
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• Voice recognition: Supports voice recognition and integrates online services like Alexa and DuerOS.
2. Structure of ESP-ADF
ESP-ADF adopts a modular design and includes several functional modules, such as:
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• Audio input-output module: Responsible for audio data collection and output.
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• Audio decoding module: Responsible for decoding audio data.
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• Audio codec module: Responsible for encoding and decoding audio data.
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• Audio processing module: Responsible for processing audio data, such as EQ and noise reduction.
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• Media protocol module: Responsible for implementing various media protocols, such as HLS and RTSP.
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• Network module: Responsible for network connection and data transmission.
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• Bluetooth module: Responsible for Bluetooth connection and data transmission.
3. ESP-ADF Versions and IDF Support
ESP-ADF supports different versions of IDF, and it is necessary to confirm version compatibility during development.
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• The ESP-IDF master branch may conflict with ESP-ADF due to significant functional changes. However, those ADF examples that are not affected can still run normally on the IDF master branch.
4. Quick Start
To start using ESP-ADF, you need:
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• A supported version of ESP-IDF.
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• A supported audio development board, such as ESP32-LyraT-Mini, ESP32-S3-Korvo-2, ESP32-C3-Lyra, etc.
5. Development Boards Supported by ESP-ADF
Espressif Systems has released a series of development boards that support ESP-ADF, such as:
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• ESP32-LyraT-Mini
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• ESP32-S3-Korvo-2
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• ESP32-C3-Lyra
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• ESP32-S3-Box series
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• ESP32-P4-Function-EV-Board
You can also use third-party development boards for development testing.
Conclusion
ESP-ADF is a powerful and easy-to-use audio development framework that can help you quickly build various audio applications. It supports rich audio functionalities and provides comprehensive documentation and examples. If you need to develop audio applications, ESP-ADF is your best choice.
Project Address: https://github.com/espressif/esp-adf