## 3 A Taxonomy of Surveys, and Some Unresolved Instances
\begin{table}
\begin{tabular}{l c l l l l} \hline
**Theatre(s)** & **Year** & **Size** & **Measurement** & **Repository** \\ \hline Olimpico, Vicenza & 1585 & mid & TCS [4] TCGS [5] & CAD, IRs [125] \\ All’antica, Sabbioneta & 1590 & small & TCS [4] TCGS [5] & CAD, IRs [125] \\ Farnese, Parma & 1628 & large & TCS [4] TCGS [5] & CAD, IRs [125] \\ La Pergola, Florence & 1656 & mid & TCS [73] & \\ Malibran, Venice & 1678 & mid & TG [126] & \\ del Pavone, Perugia & 1717 & mid & TCCS [44] & \\ Filarmonico, Verona & 1732 & mid & TC [44] & \\ San Carlo, Napoli & 1737 & large & TCS [44,74,75] & \\ Verdi, Padova & 1751 & mid & TC [127] & \\ Accademico, Castelfranco V. & 1758 & small & TC [44,128] & \\ Rossini, Lugo & 1761 & small & TCS [20,129] & \\ Comunale, Bologna & 1763 & mid & TCS [21,73] TCGS [22,44,77] & CAD [130] \\  & & & TCS [23] & \\ Court, Caserta & 1769 & small & TC [131] & \\ Fraschini, Pavia & 1773 & mid & TCCS [25,44] & \\ Mercadante, Napoli & 1777 & mid & TC [26,44] & \\ La Scala, Milano & 1778 & large & TCCS [68] TCS [73] T [78] & \\  & & & TCS [44,79] & \\ Morlacchi, Perugia & 1781 & mid & TCCS [44] & \\ Stignani, Imola & 1782 & small & TCCS [20,129] & \\ Zamdonai, Rovereto & 1786 & mid & T [44] & \\ Masini, Faenza & 1788 & small & TCCS [20,129] & \\ del’Aquila, Fermo & 1790 & mid & TS [77] & \\ Abbado, Ferrara & 1797 & mid & TCCS [44,132] & \\ Verdi, Trieste & 1801 & mid & TCS [44,84,133] & \\ Grande, Brescia & 1810 & mid & TCCS [44,134] & \\ Sociale, Como & 1813 & mid & TC [25,44] & \\ Rossini, Pesaro & 1818 & mid & TC [96] & \\ Sociale, Trento & 1819 & mid & TC [127] & \\ Verdi, S. Severo & 1819 & mid & TCCS [83] & \\ [PERSON], Gallipoli & 1825 & small & TCCS [83] & \\ Regio, Parma & 1829 & large & TCCS [44,135] & \\ Bonci, Cesena & 1846 & mid & TC [136] TCG [44,77] & \\  & & & TCS [20,129] & \\ Petrarca, Arezzo & 1833 & mid & TC [137] & \\ Milanollo, Savigliano & 1836 & small & TC [138] & \\ Marrucino, Chieti & 1818 & small & TC [139] & \\ La Fenice, Venezia & 1837 & mid & TCCS [80] & \\ [PERSON], Lucera & 1837 & small & TCCS [83] & \\ Traetta, Bitotto & 1838 & small & TCCS [83] & \\ Civico, Tortona & 1838 & small & TCCS [138] & \\ Dragoni, Meldola & 1838 & small & TCCS [20,129] & \\ Fenaroli, Lanciano & 1841 & small & TC [139] & \\ [PERSON], Modena & 1841 & mid & [44] & \\ di Bartolo, Buti & 1842 & small & T [44,140] & \\ [PERSON], Bagnacavallo & 1845 & small & TCS [20,129] & \\ [PERSON], Ravenna & 1852 & mid & TCCS [20,91,129] & \\ V. [PERSON], Messina & 1852 & mid & [94,141] & \\ [PERSON], Florence & 1854 & large & TCS [73] & \\ Piccinini, Bari & 1854 & mid & TCCS [44,83,142] & \\ Baudi, Selve in Vignone & 1855 & small & TC [138] & \\ Valli, Reggio Emilia & 1857 & mid & TCS [44,97][143] & \\ Alfieri, Asti & 1860 & mid & TCCS [44,144] & \\ Chiari, Cervia & 1860 & small & TCCS [20,129] & \\ \hline \end{tabular}
\end{table} 
Table 2: Surveyed Italian-style opera houses built in Pre-unitarian Italian States (1585–1860). The “measurement” column specifies which kind of measurements were performed: \(T\) means reverberation time, early decay time, and more; \(C\) means, e.g., early-to-energy ratio, sound clarity, definition; \(G\) means Sound Strength, \(G_{E}\), \(G_{L}\) using a calibrated sound source; \(S\) means spaciousness criteria, such as Inter-Aural Crosscorrelation Coefficient (\(IACC\)), Cosine-Lateral fraction (\(LFC80\)), and more. However, there are still some unresolved instances. The first one concerns the setup of the fly tower during the measurements. It is well known that the presence or absence of draperies on the stage can influence significantly the sound behaviour at listeners' position [150; 151]. Moreover, the sound source position in a coupled space can influence the sound energy decay [129; 146; 152]. The Ferrara-charter procedure states two positions of the sound source on the stage--the one in the fore-stage, the other one in the back stage--in order to 'average' the effects of coupling between the fly-tower and the cavea.