DYNAMIC ADJUSTMENT OF WAKE WORD ACCEPTANCE TOLERANCE THRESHOLDS IN VOICE-CONTROLLED DEVICES

Systems and methods are provided for detecting wake words. An electronic device detects an audio signal; identifies two angular sections as first and second sources of audio associated with the audio signal; processes the audio signal at two wake word detection engines (220), where each detection engine is associated with a respective angular section; determines, based on the processing at the wake word detection engines, whether the audio signal represents a wake word for the electronic device; and in accordance with a determination that the audio signal does represent a wake word, adjusts a wake word detection threshold for at least one of the wake word detection engines. Upon detecting a wake word in a first angular section, the audio signal associated with one or more of the other angular sections is used as a noise reference to perform noise cancelation in the first wake word detection engine for the first angular section.