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

A method, comprising:

• at an electronic voice-controlled speaker device including an audio front end system having a microphone array, one or more processors, and memory storing instructions for execution by the one or more processors:
• detecting, from the microphone array, an audio signal in an environment proximate to the audio front end system;
• processing the audio signal using a plurality of wake word detection engines, including dynamically adjusting how many wake word detection engines are available for processing the audio signal;
• and
• independently adjusting respective wake word detection thresholds for the plurality of wake word detection engines used to process the audio signal.

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;
• processing the audio signal using a plurality of wake word detection engines, including dynamically adjusting how many wake word detection engines are available for processing the audio signal;
• and
• independently adjusting respective wake word detection thresholds for the plurality of wake word detection engines used to process the audio signal.

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;
• processing the audio signal using a plurality of wake word detection engines, including dynamically adjusting how many wake word detection engines are available for processing the audio signal;
• and
• independently adjusting respective wake word detection thresholds for the plurality of wake word detection engines used to process the audio signal.