An FPGA-Based Audio Player with Equalizer: Mixing Digital Audio with an Arduino MKR Vidor 4000
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Have you ever wanted to know what is inside a digital audio mixing console? Or have you already programmed some MP3-player based on an ESP32 and the great Arduino libraries, but without the option for processing these audio signals? You can create a multichannel digital mixing console with multiband equalizers, an audio file player and an analog input. Rock your next party with an expandable DIY audio player with equalizer!
This is the first part of a two-part series exploring the design and implementation of an FPGA-based audio player with equalizer functionality, using the Arduino MKR Vidor 4000. In this part, I’ll explain the foundational aspects of the project, including the required toolchain, the interplay between FPGA logic and microcontrollers, and an introduction to the basics of audio signal processing. By the end, you’ll have a clear understanding of the project and its goals. The full documentation and source files are available online, with links provided at the end ...
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