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Silva LB and Santos RLS
Based on Brazilian and International normative guidelines, acoustical comfort was evaluated in 119 primary school classrooms in the City of Joao Pessoa (Brazil). A Beta Regression Model (BRM) was built, through which it was verified to what extent acoustic parameters of these rooms can affect teacher speech intelligibility. It was found that the Levels of Noise from external sources, Background Noise, Reverberation Time and the Speech Intelligibility Index are not within reference values established by the norms. Reverberation Time affects the quality of intelligibility at around 77.18%.