Speaker
Description
Issues of church design are inseparably linked with the sound function. In the contemporary Poznań churches studied by the author, built between 1970 and 2000, there are no deliberate solutions to influence the interior acoustics. Suitable acoustic conditions were obtained accidentally. The last two decades have seen a new trend in church interior design. Targeted measures are being introduced to reduce the reverberation time. This paper presents a detailed analysis of two churches in which acoustic solutions in the form of stretched ceilings were used. These are the Church of St Padre Pio, built in 2013, and the Church of St John Paul II, built in 2018. In the cases studied, the stretch ceiling consists of 30 cm of mineral wool attached to the existing ceiling, a 5 cm air void and a tensioned membrane without perforations. Acoustic parameters assessed include Reverberation Time (RT), Early Decay Time (EDT), Clarity (C80) and (C50), Definition (D50) and Speech Transmission Index (STI). The research was related to studies of churches in Poznań that lack acoustic solutions.
