Whether loudness recruitment degrades speech perception remains unsettled

Evidence

In addition to altering the overall loudness of sounds in the environment, loudness recruitment may lead to deficits in speech perception. Moore and Glasberg (1993) simulated loudness recruitment using a loudness model and measured speech perception ability under different amounts of recruitment. They demonstrated a detrimental impact of loudness recruitment on speech intelligibility, particularly when coupled with simulation of elevated absolute threshold. However, whether loudness recruitment degrades speech perception is not clearly established. For example, Stone, Moore, Alcántara, and Glasberg (1999) demonstrated that compensating for recruitment using hearing aids did not alter speech identification in quiet or noise. — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 1693

Categorization

• QUESTION: Whether recruitment actually degrades speech perception is contested across simulations and compensation experiments — worth chasing the conflicting studies.
• corroborated: 3 independent passages support this claim — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 1693
• XREF: connects to: Recruitment patients could disambiguate loudness from intensity encoding in fMRI; Hearing-impaired patients with loudness recruitment could disentangle intensity and loudness encoding.