Dynamic adjustment of wake word acceptance tolerance thresholds in voice-controlled devices

An electronic voice-controlled speaker device including an audio front end system having a microphone array, one or more processors, and memory storing one or more programs to be executed by the one or more processors, the one or more programs including instructions for:

• detecting, from the microphone array, an audio signal in an environment proximate to the audio front end system;
• identifying a first spatial zone of a plurality of spatial zones in the environment as a first source of audio associated with the audio signal;
• assigning a first wake word detection engine of a plurality of wake word detection engines to the first spatial zone in accordance with the identifying of the first spatial zone as a first source of audio;
• identifying a second spatial zone of the plurality of spatial zones in the environment as a second source of audio associated with the audio signal, wherein the second spatial zone is different from the first spatial zone;
• assigning a second wake word detection engine of the plurality of wake word detection engines to the second spatial zone in accordance with the identifying of the second spatial zone as a second source of audio;
• processing the audio signal at the first wake word detection engine assigned to the first spatial zone;
• processing the audio signal at the second wake word detection engine assigned to the second spatial zone;
• determining, based on the processing at the first wake word detection engine and based on the processing at the second wake word detection engine, whether the audio signal represents a wake word for the electronic voice-controlled speaker device;
• and
• in accordance with a determination that the audio signal represents a wake word for the electronic voice-controlled speaker device, adjusting a wake word detection threshold for at least one of the first wake word detection engine and the second wake word detection engine.

A non-transitory computer readable storage medium storing one or more programs configured for execution by an electronic voice-controlled speaker device including an audio front end system having a microphone array, the one or more programs including instructions for:

• detecting, from the microphone array, an audio signal in an environment proximate to the audio front end system;
• identifying a first spatial zone of a plurality of spatial zones in the environment as a first source of audio associated with the audio signal;
• assigning a first wake word detection engine of a plurality of wake word detection engines to the first spatial zone in accordance with the identifying of the first spatial zone as a first source of audio;
• identifying a second spatial zone of the plurality of spatial zones in the environment as a second source of audio associated with the audio signal, wherein the second spatial zone is different from the first spatial zone;
• assigning a second wake word detection engine of the plurality of wake word detection engines to the second spatial zone in accordance with the identifying of the second spatial zone as a second source of audio;
• processing the audio signal at the first wake word detection engine;
• processing the audio signal at the second wake word detection engine;
• determining, based on the processing at the first wake word detection engine and based on the processing at the second wake word detection engine, whether the audio signal represents a wake word for the electronic voice-controlled speaker device;
• and
• in accordance with a determination that the audio signal represents a wake word for the electronic voice-controlled speaker device, adjusting a wake word detection threshold for at least one of the first wake word detection engine and the second wake word detection engine.