[#10] DIY DSP Bluetooth Speaker with ESP32

Published at : 23 Dec 2025

In this video I'll show you how you can extend the ESP32 bluetooth audio receiver code with some DSP functionalities. We will integrate the ESP32 together with a 2 channel Class-D amp into some old speaker. The ESP32 will do the speaker cross-over functionality in software with some IIR filters and we're also applying an EQ to have more bass power.

Watch my proposed videos below to understand, how the ESP32 bluetooth audio receiver and the IIR filters are working in detail.

See my Github to download the code:
https://github.com/YetAnotherElectronicsChannel/ESP32_Bluetooth_DSP_Speaker

Music: www.bensound.com


See other videos of my channel:

IIR audio filters on STM32
https://youtu.be/lNBrGOk0XzE

ESP32 bluetooth audio receiver
https://youtu.be/4a10Tl5eR30