Sound characteristics of the caxirola when used by different uninstructed users
Talita Pozzer, Stephan Paul · The Journal of the Acoustical Society of America · 2014
While originally developed to be the official musical instrument of the 2014 Soccer World Cup the caxirola was banned form the stadiums as could be thrown into the field by angry spectators. Nevertheless, outside the stadiums the caxirola was still used, thus an already started investigation into the acoustics of the caxirola was concluded. At a previous ASA meeting we presented the sound power level (SWL) of the caxirola only for the two most typical ways of use. Now we present data on the sound pressure level close to the user’s ears (SPLcue) and the SWL, both measured in a reverberation room, from 30 subjects that used the caxirola according their understanding. It was found that the total SPLcue vary from 78 dB(A) up to 95 dB(A) and the global SWL of the caxirola varies from 72 dB until 84 dB. The distribution is not normal, them the SWL has 79 dB(A) as median, that is very similar of the result obtained at the previous study. The SPLcue and the SPL measured for calculating the SWL are differents. This probably due to the distance variation between the source and the ear of user causing a near field some times.