Presenting and Citing in Major and Medium-Sized Cities of Brazil: Presenting and citing in major and medium-sized cities of Brazil involves highlighting the prevalence of noise pollution-related issues and the challenges faced by hearing aid users. In cities such as São Paulo, Rio de Janeiro, Belo Horizonte, and other Brazilian metropolises and urban centers, noise levels often exceed the limits recommended by the World Health Organization (WHO), reaching peaks of 70 to 90 dB in busy areas.
