REM Results
In real-ear aided responses at 55 dB, the HA showed a larger gain at 1000, 2000, 3000, 4000, and 6000 Hz than the SHAA. The SHAA showed a larger gain at low frequencies (250 and 500 Hz) than the HA. Statistical significance was found at 500 Hz (Real-ear aided responses (REARs) of the hearing aid and SHAA groups measured at the 55-, 65-, and 75-dB sound pressure levels (SPLs): average REAR in the right ear at the (A) 55-, (B) 65-, and (C) 75-dB SPLs and average REAR in the left ear at the (D) 55-, (E), 65-, and (F) 75-dB SPLs. Error bars indicate the SD. SHAA: smartphone-based hearing aid app. *