![]() ![]() Results: Statistical analysis showed the mean Acceptable Noise Level in two repeats had no significant difference (0.05 >P). The test was conducted twice with one week separation on 66 normal people with mean age of 25±4. ![]() ![]() Materials and Methods: After selecting suitable materials for multi talker babble noise and running speech signals, Material were recorded in controlled situation in professional recording studio. The aims of this study were to develop and evaluate the reliability of acceptable noise level test in Persian language. Acceptable noise level (ANL) test can be used as an accurate and valid test to evaluate the ability of tolerating levels of noise among peoples. Background and Aim: Problem with tolerating Levels of amplified background noise is one of the most complications of people with hearing loss. ![]()
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