Developer turns IEEE amusia research prototype into open-source Android pitch app

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A developer has rebuilt an IEEE research prototype originally designed to assist people with congenital amusia — a neurological condition affecting roughly 1.5% of the population that impairs pitch perception — into a fully functional Android application. The original tool existed only as a Streamlit demo, making it inaccessible to the people it was intended to help. The new app features real-time mic input, a pitch detector built from scratch in Dart using the YIN algorithm, a live spectrogram, and a slider that nudges the user's voice toward the nearest note in a chosen key. All processing runs entirely on-device with no data uploaded to external servers. The app is free and open source, and can also be used for general ear training or tuning practice beyond its original amusia-focused purpose.

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