Hearing-loss compensation boosts stimulus level 15 dB above threshold per band

Evidence

In short, a level corresponding to 60 dB SPL(C) free-field was selected as the presentation level to be used with NH test subjects. For the HI test subjects, it was then ensured that in each one-third octave band the RMS level of the stimulus was at least 15 dB above hearing threshold before pinna-cue shaping. The required gain was added by designing an IIR filter in the test software to shape the stimulus. — Dijk, Pim van, Physiology, Psychoacoustics and…, 3052

Categorization

• XREF: The 15 dB-above-threshold band compensation strategy connects to audibility-first principles in hearing-aid fitting (NAL/prescriptive gain guidelines). — connects to: Flat-gain amplification fails for frequency-dependent hearing losses; Audibility is the greatest factor in hearing-loss communication difficulty
• corroborated: 2 independent passages support this claim — Dijk, Pim van, Physiology, Psychoacoustics and…, 3052