This document presents the idea and development of a robot that detects words of "help, help or relief", coming from a person who is at some risk (hearing source), this is done based on a Lego robot mindstorm EV3, and micropython with speech recognition which will aim at filtering and parameterizing auditory signals. The foregoing is proposed to contribute to the development of robots in Colombia, since its development and implementation can give way to future advances, especially in the field of auditory robotics.