Method of waking a device using spoken voice commands

A method comprising:

• receiving, via a first microphone, a first microphone output based on an audio signal, the audio signal provided by a user;
• receiving, via a second microphone, a second microphone output based on the audio signal;
• determining, via a first processor of one or more processors, whether the audio signal comprises a voice onset event;
• in accordance with a determination that the audio signal comprises the voice onset event:
• waking one or more second processors of the one or more processors;
• determining, via the one or more second processors of the one or more processors, whether the audio signal comprises a predetermined trigger signal;
• in accordance with a determination that the audio signal comprises the predetermined trigger signal:
• performing, via the one or more second processors of the one or more processors, automatic speech recognition based on the audio signal;
• and
• in accordance with a determination that the audio signal does not comprise the predetermined trigger signal:
• forgoing performing the automatic speech recognition;
• and
• in accordance with a determination that the audio signal does not comprise the voice onset event:
• forgoing waking the one or more second processors of the one or more processors, wherein:
• a head-wearable device comprises the first microphone and further comprises the second microphone,
• the first microphone is configured to rest at a first height with respect to the user's face when the head-wearable device is worn by the user,
• the second microphone is configured to rest at a second height with respect to the user's face when the head-wearable device is worn by the user, the second height different than the first height, and
• said determining whether the audio signal comprises the voice onset event comprises determining a probability of voice activity with respect to the audio signal, wherein the determining the probability of voice activity comprises performing beamforming based on the first microphone output and the second microphone output.

A non-transitory computer-readable medium storing instructions, which, when executed by one or more processors, cause the one or more processors to perform a method comprising:

• receiving, via a first microphone, a first microphone output based on an audio signal, the audio signal provided by a user;
• receiving, via a second microphone, a second microphone output based on the audio signal;
• determining, via a first processor of one or more processors, whether the audio signal comprises a voice onset event;
• in accordance with a determination that the audio signal comprises the voice onset event:
• waking one or more second processors of the one or more processors;
• determining, via the one or more second processors of the one or more processors, whether the audio signal comprises a predetermined trigger signal;
• in accordance with a determination that the audio signal comprises the predetermined trigger signal:
• performing, via the one or more second processors of the one or more processors, automatic speech recognition based on the audio signal;
• and
• in accordance with a determination that the audio signal does not comprise the predetermined trigger signal:
• forgoing performing the automatic speech recognition;
• and
• in accordance with a determination that the audio signal does not comprise the voice onset event:
• forgoing waking the one or more second processors of the one or more processors, wherein:
• a head-wearable device comprises the first microphone and further comprises the second microphone,
• the first microphone is configured to rest at a first height with respect to the user's face when the head-wearable device is worn by the user,
• the second microphone is configured to rest at a second height with respect to the user's face when the head-wearable device is worn by the user, the second height different than the first height, and
• said determining whether the audio signal comprises the voice onset event comprises determining a probability of voice activity with respect to the audio signal, wherein the determining the probability of voice activity comprises performing beamforming based on the first microphone output and the second microphone output.