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.
How the Lack of Love Affects Two Men a turn when a divorced woman, Oh Mi-mi, rents a room in their house. Both fall in love with her, and they turn on each other to win her heart. "How the Lack of Love Affects Two Men" was released in South Korea on 16 November 2006, and on its opening weekend topped the box office with 179,489 admissions. The film went on to receive a total of 593,277 admissions nationwide, with a gross (as of 26 November 2006) of $2,470,615. How the Lack of Love Affects Two Men How the Lack of Love Affects Two Men () is a