摘要：Sound disturbance has been growing up for the last decades, mainly in the major urban agglomerations.In 2004, Belem was pointed out in an IBGE research as the noisiest capital of Brazil.Thus, with the aim of verifying the panorama of sound pollution on the Belém-Pará metropolitan region on the year 2006, research was done on the archives of the Gerência de Perícias Tecnológicas , from the Centro de Perícias Científicas “Renato Chaves ”, where the solicitations for sound pollution investigation were selected among all investigation solicited to the Núcleo de Crimes Ambientais , for the period of January 01 to December 31, 2006 concerning the Metropolitan Area of Belém, State of Pará-Brazil (RMB).It was collected 80 reports for the studied period, that sources of sound pollution comprised in the category entertainment were the most frequent in investigation reports solicitations, and along with category factory, held the first place, both with 22% of report solicitations made during the studied period.
