On the other hand, if the sound pressure is 200 µPa, then the ratio of the RMS sound pressure to the reference level of sound pressure is 200/20 = 10. This is the lowest possible SPL, which corresponds to the threshold of hearing. Taking the logarithm (base 10) of this ratio gives you 0, and multiplying by 20 gives you an SPL of 0 dB. This gives you the SPL in decibels (dB).įor example, if the sound pressure is 20 µPa, then the ratio of the RMS sound pressure to the reference level of sound pressure is 20/20 = 1. “Politicians need to think of this drama.To calculate SPL, you take the ratio of the sound pressure to the reference level of sound pressure and then take the logarithm (base 10) of that ratio, and then multiply by 20. “The beauty is that music overcomes all divisions, all ideologies, goes to the heart and soul of people, and one hopes that it makes people think,” said foundation president Arnoldo Mosca Mondadori. The House of the Spirit and Arts Foundation that first brought workshops for making stringed instruments to four Italian prisons a decade ago hopes the concert at La Scala will be the beginning of a movement to bring Orchestra of the Sea performances first to the southern European countries bearing the brunt of migration, then to the northern capitals that hold the most sway in migrant policy. “These instruments, which have crossed the sea, have a sweetness that you could not imagine,’’ said cellist Mario Brunello, a member of the Orchestra of the Sea. The veneer of paint influences the instruments’ timbre. While a classic violin made in the famed workshops of Cremona, an hour’s drive from Milan, will use fir and maple, the instruments of the sea are assembled from a softer African fir, the sun- and sea-drenched hues of blue, orange and red left as a reminder of the journey. (AP Photo/Antonio Calanni)Įach instrument takes 400 hours to create, from disassembling the boats to the finished product. says have died or gone missing on the perilous central Mediterranean crossing since 2014.Ī shoulder bag with a disposable diaper, baby bottle and infant shoes sits on one prow alongside tins of anchovies and tuna from Tunisia and many plastic sandals.Ī violin made from the wood of wrecked immigrants’ boats is seen during a rehearse in Milan, northern Italy, Saturday, Feb. The boats arrive at Opera as they were seized, still containing remnants of the migrants’ lives, and with them a reminder of the 22,870 migrants that the U.N. In a full-circle moment, the rosaries are assembled by migrants at a Vatican workshop. They send the more damaged wood to another prison in Rome, where prisoners make crucifixes for rosaries. So they now look for the prime pieces for the instrument workshop, removing rusted nails in the process. Originally, the boats were being transformed into crucifixes and nativity scenes, but the inmates who were already trained luthiers thought: why not instruments? Lamponi and fellow inmate Andrea Volonghi have found new purpose in their life sentences, pulling apart the smugglers’ boats deposited in a yard among the prison blocks. Personal belongings left in a wrecked migrants’ boats lie inside the facilities of Milan’s Opera maximum security prison near Milan, northern Italy, Friday, Feb.
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