Patent ID: 8077028

Claim:
An emergency alert system comprising: a micro-controller configured to receive, through fire alarm interface circuitry from at least one emergency sensor of a plurality of emergency sensors, emergency condition input data comprising a type of a possible or actual emergency condition and a location with respect to the micro-controller of the possible or actual emergency condition; a voice alert system in communication with the micro-controller, the voice alert system comprising: a voice storage with stored voice phrase data comprising a plurality of voice phrases comprising a first voice phrase including a description of a first exit path and a second voice phrase including a description of a second exit path; an audio amplifier configured to receive voice phrase data from the voice storage; and a phrase selection switch configured to provide phrase information to the microcontroller; wherein the micro-controller is configured to analyze the phrase information and emergency condition input data, select at least one of the plurality of voice phrases from the voice phrase data stored in the voice storage based on the phrase information and based on the type of the possible or actual emergency condition and the location with respect to the micro-controller of the possible or actual emergency condition, and command the voice storage to send the selected at least one of the plurality of voice phrases to the audio amplifier, wherein the micro-controller is further configured to analyze data representing a level of noise in an area and send commands to the audio amplifier to control a volume of the selected at least one of the plurality of voice phrases based on the level of noise.