Patent ID: 11899885
Assignee: INTEL CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 8:
9. A computing device comprising:
a speaker;
at least one storage device;
instructions; and
at least one processor to execute the instructions to:
cause the speaker to produce a series of pulses;
generate a full echo profile based on pulses and corresponding echoes sensed by a microphone;
identify peaks in the full echo profile, different ones of the peaks corresponding to respective one of the pulses or the corresponding echoes;
identify repeating reference signals based on the peaks identified in the full echo profile, the repeating reference signals corresponding to the pulses;
identify an echo signal between separate occurrences of the repeating reference signals, the echo signal corresponding to one of the echoes; and
determine whether an object is within an activation region associated with the computing device based on a time difference between the echo signal and a preceding one of the repeating reference signals.