Abstract:
The “Redução de São Miguel Arcanjo” is a part of the “Sete Povos das Missões” ruins, being a
strong evidence of the Jesuit missions and the European Baroque from the Iberian Peninsula,
also integrated into the southern Brazil indigenous culture. In this paper, the acoustic
reconstruction of “Igreja de São Miguel Arcanjo” was done. This church had the beginning of its
construction in 1735 and an interruption in 1745, due to the wars between Spanish and
Portuguese for territory control and possession. Within the frame of the study, a comparison was
done. For that, several possibilities for positioning the choir and changes in the parameters EDT,
D50, C80 and STI have been analyzed, considering the liturgical organization reported in
historical records.