This is actually a much simpler task than ASR and you can even easily train on a normal CPU even. The best do it yourself instructions are in a book called Tin

This is actually a much simpler task than ASR and you can even easily train on a normal CPU even. The best do it yourself instructions are in a book called Tiny ML. Compared to super deep transformers, you'll find that deployed WW detectors are as simple as SVMs or 2 layer NNs.