Alert fault detection system and method

An alert fault detection system for fault detection in an audio alert generation system, wherein the audio alert generation system includes a speaker, an audio path, and a stored digital alert audio file to be processed in the audio path to generate an analog audio signal to drive the speaker, wherein the alert fault detection system comprises:

• a processor;
• a memory coupled to the processor;
• an input for obtaining a signal from the audio alert generation system, wherein the input includes a microphone to obtain the signal from the acoustic environment;
• a second analog input to obtain an analog electrical signal from the audio path of the audio alert generation system at a point between a digital-to-analog converter and the speaker;
• an analog-to-digital converter to convert the analog electrical signal into a second digitally-formatted obtained audio signal;
• and
• a fault detection module including processor executable instructions stored in the memory that, when executed, cause the processor to convert the obtained signal to a digitally-formatted obtained audio signal, detect a fault in the audio alert generation system by comparing the digitally-formatted obtained audio signal with the stored digital alert audio file, comparing the second digitally-formatted obtained audio signal with the stored digital alert audio file, and comparing the second digitally-formatted obtained audio signal with the digitally-formatted obtained audio signal, and trigger a fault indicator.