Olaf spectrogram

The spectrogram is computed by Olaf itself, in WebAssembly, from the 16 kHz resampled audio: exactly the spectra Olaf extracts event points from. The red dots are these event points, drawn on the block and frequency bin they were found in. Pairs of event points become the fingerprints that are matched against the reference compiled into the module.

Start a source to see the spectrogram.