Design applications in MATLAB and then perform standalone deployment onto Arduino hardware using MATLAB Function blocks in Simulink. You can tune your algorithm for a better performance and monitor signals from the hardware in real-time using External Mode. In this example, an audio processing application has been developed, implementing audio effects such as Echo, Reverberation and Pitch-Shifting.
Here is a link to the video describing the Audio processing application:
Meeshawn Marathe (2020). Audio Effects (Echo, Reverb, and Pitch-Shift) with Arduino (https://www.mathworks.com/matlabcentral/fileexchange/72326-audio-effects-echo-reverb-and-pitch-shift-with-arduino), MATLAB Central File Exchange. Retrieved .
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