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La Pelota - Milan
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Università Milano - Bicocca
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Club House
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Sala regia
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Prove di laboratorio
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Chiesa di San Rocco
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 “La
Pelota” - 10, Palermo
st. Milan
Multipurpose space for events (about 20.000 m3): fashion
shows, conventions, exhibitions, concerts. Speech and
music perception, initially fully compromised by the
high level of acoustical reverberation (experimental
reverberation time T60 was about 11s and 13s for the
1000 Hz and 125 Hz frequency components, respectively)
and by flutter echoes and acoustical resonances
phenomena, have been highly improved with only
corrective actions on peripheral surfaces of the big
hall.
Acoustical absorption panels (passive type for middle
and high frequencies and active type, vibrating
membranes, for low frequencies) were applied on the
walls of the three sides; the surfaces of the entrance
side wall and of the vault were sprayed with natural
cellulose fibre. Reverberation time has been lowered to
2s and 2.5 s at 1000 Hz and 125 Hz, respectively.
Ray-tracing based numerical code was used for the
simulation of the internal acoustical field and for the
predictive valuation and optimisation of corrective
actions. |
