Tinnitus masker issues associated with use of tinnitus maskers: the "safe" level of continuous sound depends on the duration of the sound. For maskers worn continuously, or most of the day, a safe level is no more than 70db, in accordance with EPA maximum safe exposure level for 24-hour environmental sound. Maskers louder than 45db or so (the ambient background level of an average home living area) may start to interfere with understanding conversation (about 60db). Masking of high frequency tinnitus (>6,000hz) is difficult because of the resonance characteristics of the human ear as well as high frequency limitations of in-ear devices.
Finding of the body of St Mark Finding of the body of St Mark The Finding of the body of St Mark or Rediscovery of the body of Saint Mark is a painting by Tintoretto. Dated to between 1562 and 1566, it is part of a cycle of paintings of Saint Mark, the patron saint of Venice. It is now held in the Pinacoteca di Brera in Milan. The painting was commissioned by Tommaso Rangone, the “grand guardian” of the Scuola Grande di San Marco in Venice from Tintoretto as part of series of large canvases depicting the acquisition by Venice of the body of Saint Mark.