Comparing the Results of Sound Field Audiometry With Traditional Headphone-Based Audiometry: Implications for Assessing Hearing Aid Benefits Using Functional Gain

Improvement in aided hearing in SFA compared with unaided HPA must be interpreted with caution at lower frequencies in subjects with MHL. Meanwhile, when validating the efficacy in HA users with SNHL, the process can be simplified using unaided HPA instead of SFA; however, unaided SFA should be employed in those with MHL.