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Effects of white noise on the most comfortable level for speech with normal listeners. 1982

R C Beattie, and A Zentil, and D A Svihovec

This study assessed the effects of noise level on the most comfortable level (MCL) for discursive speech. Normal young adults (N:25) were instructed to search thoroughly around their MCL by Bekesy tracking. Mean MCL in quiet was 82.5 db SPL (S.D. = 11.1 db) which was statistically indistinguishable from group MCLs in noises of 55 and 70 db SPL. However, MCL rose to 90.9 and 100.3 db in noises of 85 and 100 db SPL, respectively. These mean MCLs were somewhat higher than observed previously and may be due to differences in instructions and procedures in threshold-tracking.

UI MeSH Term Description Entries
D008144 Loudness Perception The perceived attribute of a sound which corresponds to the physical attribute of intensity. Loudness Perceptions,Perception, Loudness,Perceptions, Loudness
D009622 Noise Any sound which is unwanted or interferes with HEARING other sounds. Noise Pollution,Noises,Pollution, Noise
D006309 Hearing The ability or act of sensing and transducing ACOUSTIC STIMULATION to the CENTRAL NERVOUS SYSTEM. It is also called audition. Audition
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D013067 Speech Perception The process whereby an utterance is decoded into a representation in terms of linguistic units (sequences of phonetic segments which combine to form lexical and grammatical morphemes). Speech Discrimination,Discrimination, Speech,Perception, Speech

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