{"id":26470481,"url":"https://github.com/junon10/esp32-multiband-digital-audio-processor","last_synced_at":"2026-04-13T07:04:08.007Z","repository":{"id":222828587,"uuid":"757383541","full_name":"junon10/esp32-multiband-digital-audio-processor","owner":"junon10","description":"An Arduino multiband digital audio processor with ESP32, PCM5102-dac, STM32F411-digital-input or 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Esp32 Multiband Digital Audio Processor\n\n## Features\n\n* Web interface for control and configuration.\n* Adjustment of the number of frequency bands in real time from 1 to 10.\n* Graphic equalizer.\n* Audio echo.\n* Independent or synchronized adjustments for each audio compressor.\n* Audio VU (low speed).\n* Audio balance adjustment.\n* Audio Pre-emphasis and Post-emphasis by software.\n* Output audio peak protection system.\n* Settings saving system with preset files.\n* Circuit power supply directly from the USB port.\n* Simplified scheme with a low number of electronic components.\n\n\u003cbr/\u003e\n\u003ch2\u003eAudio level and main\u003c/h2\u003e\n\u003cimg src=\"docs/screenshot1.png\" /\u003e\n\n\u003cbr/\u003e\n\u003ch2\u003eCompressor\u003c/h2\u003e\n\u003cimg src=\"docs/screenshot2.png\" /\u003e\n\n\u003cbr/\u003e\n\u003ch2\u003eDigital Audio Processor\u003c/h2\u003e\n\u003cimg src=\"docs/screenshot3.png\" /\u003e\n\n\u003cbr/\u003e\n\u003ch2\u003eSchematic (Digital Usb Input)\u003c/h2\u003e \n\u003cimg src=\"docs/schema-digital-usb-input.png\" /\u003e\n\n\u003cbr/\u003e\n\u003ch2\u003ePCB Layout (Digital Usb Input)\u003c/h2\u003e \n\u003cimg src=\"docs/pcb-layout-digital-usb-input.png\" /\u003e\n\n\u003cbr/\u003e\n\u003ch2\u003ePrototype (Digital Usb Input)\u003c/h2\u003e \n\u003cimg src=\"docs/prototype-digital-usb-input.jpg\" /\u003e\n\n\u003cbr/\u003e\n\u003ch2\u003eSchematic (PCM1802 ADC Input)\u003c/h2\u003e \n\u003cimg src=\"docs/schema-pcm1802-adc-input.png\" /\u003e\n\n## Recommended compilation settings\n\n* Microprocessor: ESP32 WROOM Devkit\n* Rom: 4MB, Minimal SPIFFS large Apps with OTA\n* Ram: Internal ~ 350 KBytes\n* Ide: Arduino v1.8.19\n* Board Version Support: Esp32 v2.0.7\n* Use ArduinoJson 5.x! Please type in the terminal window in the folder ArduinoJson to set 5.x version:\n```bash\n git checkout 5.x\n``` \n* ArduinoJson 6.x and 7.x use a lot of memory and are not suitable for this project!\n* This project does not work with the latest versions!\n* The tools folder should be copied to your ~/Documents/Arduino folder if you haven't already installed Esp32 Sketch Data Upload (Required to upload the data folder into Esp32's SPIFFS memory).\n\n## Tips\n\n* The recommended input level is 15dB for PC volume control at 50%.\n* To change a slider, first click on it and move it with the directional keys for better precision.\n* The default access credentials are admin/admin.\n* The WiFi AP credentials are DAP/123mudar.\n* The Web interface IP is http://192.168.4.1\n\n## Dependencies\n\n* https://github.com/junon10/STM32F411_USB_AUDIO_DAC\n* https://github.com/junon10/yummyDSP\n* https://github.com/junon10/ArduinoJson (old ArduinoJson 5.x, because it's lighter and more stable!)\n\n## Hardware\n\n* 1 ESP32 MH ET LIVE WROOM DevKIT\n* 1 STM32F411 BlackPill\n* 1 PCM5102A DAC board\n\n## Author\n\n- **Junon M.**  \n  Contact: [junon10@tutamail.com](mailto:junon10@tutamail.com)\n\n## Contributing\n\nContributions are welcome! Please fork the repository and send a pull request.\n\n## Repository\n\n- [https://github.com/junon10/esp32-multiband-digital-audio-processor](https://github.com/junon10/esp32-multiband-digital-audio-processor)\n\n## Changelog\n\n- **v1.0.2.71 (2024/02/14)**: Initial commit.\n- **v1.0.2.72 (2025/06/19)**: More detailed explanation of the necessary development environment.\n\n## License\n\n- GPLv3\n\n## Notes\n\n* This dynamic audio compression library is not perfect due to the insufficient speed of esp32, which makes it impossible to use real-time logarithm functions for more than two simultaneous frequency bands. In practice with this lib you get a good effect, but with a not very wide input dynamic range.\n\n* There are other compressor variations, for example the unlinked MonoCompressor, which I will add to this code in the next updates.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fjunon10%2Fesp32-multiband-digital-audio-processor","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fjunon10%2Fesp32-multiband-digital-audio-processor","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fjunon10%2Fesp32-multiband-digital-audio-processor/lists"}