اكتشاف الكلمات الرئيسية واستيقاظ الكلمات

Wake-word detection is a form of keyword spotting. A cascade can use a low-power detector before a more expensive recognizer or assistant pipeline. Hello Edge studies small-footprint keyword spotting under microcontroller constraints. Google research describes contextual speech recognition for trigger phrase detection. A confidence threshold over frames can reduce accidental activations but may increase missed triggers or latency. Hello Edge compares several keyword-spotting architectures on Google Speech Commands under microcontroller resource constraints. Its depthwise separable CNN reports 95.4% accuracy, about 10% higher than a DNN with a similar parameter count in that evaluation. Results are not universal device or language guarantees. A confidence threshold over frames can reduce accidental activations but may increase missed triggers or latency; assess false-accept and false-reject rates in realistic audio.