Table 3. Hearing Aid Parameters for Normal-Hearing Participants and Participants with a Hearing loss.

	With Normal Hearing	With a Hearing Loss
Frequency range (Hz)	100–6,500
Compression ratio	2:1	NAL-NL2
Compression knee point	NAL-NL2	NAL-NL2
Attack (ms)	Fixed 2–22	Variable 0–12
Release (ms)	Fixed 54–56	Variable 16–84
Compression	Syllabic	Syllabic
Insertion gain	55, 65, 75 (average-based)	55, 65, 75 (target-matched)
Programs	Flat (0, +10, +20 dB)	Prescribed gain, −10, +10 dB
Microphone	Omni	Omni
Noise, wind, and feedback reduction	Disengaged	Disengaged

Abbreviations: NAL-NL2, National Acoustic Laboratories - Non Linear 2.