SOUND - vibrations that travel through the air or another medium and can be heard when they reach a person's   or animal's ear.  Sound sensors are used to measure noise levels across a range of frequencies. Sound sensors can be used to   activate security measures, for example, if elements register a sound such as glass breaking, an alarm could be   triggered. Sound sensors could also be sensitive enough to sense vibration alerting of foundation movement.

SOUND

SOUND – vibrations that travel through the air or another medium and can be heard when they reach a person’s or animal’s ear. Sound sensors are used to measure noise levels across a range of frequencies. Sound sensors can be used to activate security measures, for example, if elements register a sound such as glass breaking, an alarm could be triggered. Sound sensors could also be sensitive enough to sense vibration alerting of foundation movement.

SPEECH - the sound produced by the vocal organs of a vertebrate, especially a human.  Voice commands are used to instruct elements to perform a certain task or to initiate certain events. Voice   recognition allows preferences to be recorded for multiple users.

SPEECH

SPEECH – the sound produced by the vocal organs of a vertebrate, especially a human. Voice commands are used to instruct elements to perform a certain task or to initiate certain events. Voice recognition allows preferences to be recorded for multiple users.