Patent ID: 11922949
Assignee: AMAZON TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 12:
13. A system comprising:
a central processing unit configured to operate in a first power mode or a second power mode in which the central processing unit consumes less power than the first power mode; and
a sound detector comprising a processor and a memory storing instructions that, upon execution by the processor, configure the sound detector to:
receive, while the central processing unit is operating in the first power mode, first input data corresponding to first audio detected by a microphone;
determine that the first input data represents ambient noise only;
cause the central processing unit to operate in the second power mode based at least in part on the first input data representing ambient noise only;
receive, while the central processing unit is operating in the second power mode, second input data corresponding to second audio detected by the microphone;
determine that the second input data represents a sound event;
cause the central processing unit to operate in the first power mode; and
cease, based at least in part on a determination that the central processing unit is executing an audio function, analysis of third input data received after the second input data.