Filtering high frequencies of speech does not hurt intelligibility beyond a modest cutoff

Evidence

SRT measurements in the presence of a LP-filtered target are plotted in Fig. 2 as a function of the filter attenuation. As in the HP case, SRTs increased linearly with a slope of 0.48 dB SRT/dB attenuation, but unlike the HP case, SRTs kept increasing until a floor value of 37-dB attenuation. — Dijk, Pim van, Physiology, Psychoacoustics and…, 3563

Categorization

• corroborated: 2 independent passages support this claim — Dijk, Pim van, Physiology, Psychoacoustics and…, 3563