N2 - This paper presents the interior acoustical characterization of the 9,000-seat church of the Holy Trinity in the Sanctuary of Fátima, Portugal, inaugurated in 2007. In situ measurements were held regarding interior sound pressure levels (with and without the HVAC equipment working), NC curves, RASTI (with and without the installed sound system) and reverberation time. The results are presented and commented according to the design values. A comparison is made with other churches in the world, also with a very large volume (for instance the Basilica Mariacka in Gdańsk). The measured data are also used to calculate a global index of this church acoustic quality using Engel's and Kosała's Index Method. L1 - http://www.czasopisma.pan.pl/Content/107542/PDF/70.pdf L2 - http://www.czasopisma.pan.pl/Content/107542 PY - 2010 IS - No 2 EP - 156 DO - 10.2478/v10168-010-0013-5 KW - church KW - acoustics KW - RASTI KW - reverberation time A1 - Carvalho, António A1 - Silva, Pedro PB - Polish Academy of Sciences, Institute of Fundamental Technological Research, Committee on Acoustics VL - vol. 35 DA - 2010 T1 - Sound, Noise and Speech at the 9000-Seat Holy Trinity Church in Fatima, Portugal SP - 145 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/107542 T2 - Archives of Acoustics