Keyword Detection (Live Audio + ML) — C

Source: apps/c/example_keyword_live/src/app.c | WASM Demo

Real-time 'yes'/'no' keyword detection using on-board microphones and the TensorFlow Lite Micro micro_speech model. Audio is captured via I2S DMA, spectral features are extracted, and a neural network classifier runs inference every ~1 second.

Language-specific patterns

This example uses the heap-mode C API with _create() / _destroy() calls. For zero-heap builds, switch to _init() / _deinit() with caller-supplied storage or use OVE_*_DEFINE_STATIC() at file scope (the latter also works in heap mode).

See the overview for architecture details and the full API list.

How to build

# Native POSIX
make host.posix.example_keyword_live
make configure && make download && make && make run

# WASM (browser)
make wasm.posix.example_keyword_live
make configure && make download && make && make run