Creates log-mel spectrogram template for 'hey salty' wake word detection
using synthetic speech generation. Template generated from 5 synthetic
audio samples with varying pitch to improve robustness.
- generate_wake_word_template.py: Script to synthesize and generate template
- hey_salty.npy: 40-band log-mel template (40, 61) shape
- wake_word_params.yaml: Updated template_path
- README.md: Documentation for template usage and retraining procedures
The template is used by wake_word_node.py via cosine similarity matching
against incoming audio. Configurable sensitivity via match_threshold.
Future work: Collect real training recordings to improve accuracy.