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October 7, 2026
Question

Streaming speech recognition on the STM32N6 NPU: could you evaluate my result?

  • October 7, 2026
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I have implemented streaming speech recognition on the STM32N6, with a model designed specifically for the constraints of this microcontroller and its NPU.

The STM32N6570-DK listens to its on-board microphone and prints the text on the display. It recognizes any English words, not a fixed list of commands, and works with no network connection. The word error rate on LibriSpeech test-other is 14.84% with no language model.


Source code, model weights and ready-to-flash firmware: https://github.com/fotonik-sk/stm32n6-asr