During the Imperial Roman period, thousands of theatres were built. The theatres have three principal elements: the scene building (actor position), the orchestra and the cavea (spectator seating). The theatres were built without a roof, so they were open-air spaces. The theatres were abandoned afterward the barbarian invasions, and during the Middle Ages, homes were built inside the cavea. The theatres were rediscovered during the Renaissance period. Today, ancient theatres are the center of cultural events and are used for various kinds of shows. This work discussed the acoustics of the Roman theatre of Benevento, which was built during the Imperial Age. The theatre was destroyed after the barbaric invasion and it was rebuilt in the first half of the 1900s. The theatre was opened in 1957, and today it is the center of social and cultural activities. Acoustic measurements were carried out according to ISO 3382 standard, placing an omnidirectional sound source on the scene building and in the orchestra, with the measurement microphones along three directions in the cavea. The acoustic characteristics in various seating areas of the cavea were evaluated. Therefore, it possible to understand in which sectors of the theatre the acoustic characteristics are optimal for different types of theatrical performances.

The Ottoman mosques of the 15th and 16th centuries represent an architectural typology that has been replicated in territories out of the Middle East for as long as Islam spread its influence on other countries. This paper deals with the determination of the acoustic properties inside a few Ottoman mosques located in different cities of Albania, specifically in Elbasan, Berat, Kavaja, Tirana and Shkodra. A comparison between the prayer rooms of these five mosques has been undertaken in terms of the main acoustic parameters by following the standard requirements outlined in ISO 3382-1. The architectural characteristics of the single-unit mosques chosen for this research study are determined by the domed-square musalla, which has a comparable volume size among all five mosques. Results gathered by the acoustic measurements undertaken in unoccupied conditions highlight an overall lack of speech understanding given the values of some acoustic parameters fairly acceptable. This outcome is justified by the geometrical configuration, worsened by the presence of a dome that creates a focusing effect of the sound rays, and by the reflecting finish materials applied to walls and roof that facilitate the build-up defect of echoes.

The Byzantine churches built between the 7th and the 15th centuries represent an architectural typology that has been developed along with other architectural styles. The evolution of the interior organization, to be composed of only a single nave for the oldest architecture and then developed with additional lateral naves, is one of the multiple aspects that characterizes this building type, studied mainly from an architectural perspective. The variety of roof morphology, being flat, double slope, vaulted or domed, contributes to determining the overall acoustics. This paper deals with the analysis of the acoustic characteristics related to five Byzantine churches located in Albania, specifically in Berat and Cete. A comparison of the impulse response (IR) measured inside each church was given by analyzing the most appropriate acoustic parameters and in line with ISO 3382. The acoustic surveys were undertaken with a minimal furniture and without any audience. The results highlight small difficulties in terms of speech understanding, especially under a speech clarity index found to be below the optimal range limit. This shortfall is attributed to the geometry of the volumes and to the reflecting materials applied to the surfaces that facilitate the build-up of sound energy.

To counter the transmission of Covid -19 it is mandatory to wear face masks. Medical face masks (surgical or other medical devices) are used to control the spread of infection by reducing the airborne dispersion of the viral load-carrying saliva droplets emitted from the mouth when talking, sneezing or coughing. The use of the mask can cause fatigue, difficulty in breathing and reduced speech understanding. In school classrooms, the use of masks makes verbal communication very difficult by reducing speech understanding and this can affect both the learning level of pupils and cause vocal dysfunctions in teachers who incur an overload of the speech apparatus. To investigate the effects of using the mask in learning environments, tests were carried out with pupils of a primary school. The students were given dictations by a teacher according to two configurations: with and without a mask. Subsequently, the texts written by the children were analyzed to assess the presence of possible errors in the understanding of the dictation administered with and without a mask.

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