Patent ID: 9562970
Date: 2017-02-07
CPC Classifications: G01S,H04M

Claim:
1. An apparatus comprising: at least one microphone; at least two speakers; at least one processor; and at least one memory including computer program code, the at least one memory and the computer program code configured, with the at least one processor, to cause the apparatus to: send a first audio signal to a first speaker of said at least two speakers, and a second audio signal to a second speaker of said at least two audio speakers, said first and second audio signals being separate and distinguishable from one another; receive direct and reflected portions of said first and second audio signals from said at least one microphone as input, said direct portions having passed directly from said first speaker and said second speaker to said at least one microphone and said reflected portions having reflected from an object toward said at least one microphone; filter said input to separate a first contribution due to said direct and reflected portions of said first audio signal from a second contribution due to said direct and reflected portions of said second audio signal; analyze said direct and reflected portions of said first audio signal and said direct and reflected portions of said second audio signal to determine a first distance covered by said reflected portion of said first audio signal and a second distance covered by said reflected portion of said second audio signal; and determine from said first and second distances a position of said object relative to said apparatus.