Power-efficient processing of neuromuscular signals to confirm occurrences of user gestures, and systems and methods of use thereof

A method of power-efficient processing of neuromuscular signals to confirm occurrence of a predetermined event, the method comprising:

• obtaining a first set of neuromuscular signals from a neuromuscular-signal sensing component of a wearable device;
• determining, using a low-power detector of the wearable device, that a respective neuromuscular signal of the first set of neuromuscular signals requires further processing to confirm that a predetermined in-air hand gesture has been performed at the wearable device:
• processing the first set of neuromuscular signals using a high-power detector of the wearable device to generate processed neuromuscular signals, the high-power detector configured to detect a first set of in-air hand gestures while consuming a first amount of power from the wearable device and the low-power detector configured to detect a second set of in-air hand gestures while consuming a second amount of power from the wearable device, the second set of in-air hand gestures includes less in-air hand gestures than the first set of in-air hand gestures and the second amount of power is less than the first amount of power;
• and
• in accordance with a determination, based on the processed neuromuscular signals that the predetermined in-air hand gesture did occur, registering an occurrence of the predetermined in-air hand gesture;
• receiving a second set of neuromuscular signals from the neuromuscular-signal sensing component of the wearable device;
• and
• after determining, based on a respective neuromuscular signal of the second set of neuromuscular signals and using the low-power detector and not using the high-power detector, that a different predetermined in-air hand gesture, distinct from the predetermined in-air hand gesture, was performed at the wearable device:
• performing an action in response to the different predetermined in-air hand gesture at the wearable device.