Anthropic noise in highly attended environments has been observed and studied with increasing attention over the years. Very often the purpose of these studies has been finding several solutions to the acoustic discomfort linked to the noise generated by the presence of a large number of people, both indoors and outdoors. In particular, an attempt was made to analyze as thoroughly as possible the phenomenon whereby in very noisy environments a speaker unconsciously increases his vocal effort to always be understood by a listener: that is the Lombard effect. There are many researches in this regard, in which the relationship between noise and voice level has been examined in multiple conditions of both environments and social situations.