In this project, a sound sensor has been utilized to detect sound of loud voices, sound of cars in chaotic places and
other mechanical sources etc. The controlling of output visual alarms using different sound levels are developed. So, the
loudness can be understood of coming voice signals by seeing the number of output indicators in this process. This is wellknown that excessive noise can cause a health problem ranging from stress, poor concentration, hearing problem etc. So as a
human being it is our duty to control the noise pollution.