六合宝典-掌上娱乐助手 app for iPhone and iPad
Audiometry results accurate, a large number of clinical data calibration contrast, to ensure the accuracy of the test results, APP preliminary research and development, with a professional hearing tester and app contrast, and then calibrate the app data, and finally with the calibration data and professional Hearing tester data comparison, the error does not exceed 5db, to meet the requirements of international standards.