Evaluating the role of age on speech-in-noise perception based primarily on temporal envelope information.

ABSTRACT: Acoustic amplitude modulation (AM) patterns carry important information, particularly in speech. AM masking, influenced by frequency selectivity in the modulation domain, is considered a crucial factor for speech intelligibility in noisy environments. Based on recent evidence suggesting an age-related decline in AM frequency selectivity, this study investigated whether increased AM masking in older listeners is associated with reduced speech intelligibility. Speech reception thresholds (SRTs) were measured using tone-vocoded speech and maskers with no modulation, broadband AM, or narrowband AM at varying modulation frequencies. AM masked thresholds were assessed for a 4-Hz target modulation frequency. The study included young (N = 14, 19-25 years) and older (N = 14, 57-79 years) listeners

SUBMITTER: Regev J 

PROVIDER: S-EPMC12442876 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature