文章基本信息

标题：Redução do benefício da modulação do mascaramento em função da compressão temporal da fala
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作者：Fernando Augusto Pacífico ; Silvana Maria Sobral Griz ; Denise Costa Menezes 等
期刊名称：Revista CEFAC
印刷版ISSN：1516-1846
电子版ISSN：1982-0216
出版年度：2020
卷号：22
期号：5
页码：1-8
DOI：10.1590/1982-0216/20202257720
出版社：CEFAC Saúde e Educação
摘要：Purpose: to investigate the magnitude of the modulation masking release in sentence recognition as a function of compression level and modulation rate. Methods: sentences of the Brazilian Portuguese version of the Hearing in Noise Test sentences were used as stimulus. The sentence recognition thresholds were established as a function of speech compression level (0%, 33%, and 50%) in steady and modulated noise at different modulation rates (4, 10, 32 Hz). The analysis of variance was performed for repeated measures, using the 5% significance level. Results: sentence recognition thresholds were higher for higher compression levels in the different types of noise. However, thresholds were smaller for modulated noises. Also, the magnitude of modulation masking release decreased as speech compression level increased. Nevertheless, no difference was observed in compressed speech between different noise modulation rates, in relation to the speech compression level. Conclusion: the magnitude of the modulation masking release decreased as the speech time-compression increased. Also, the reductions in modulation masking release, in relation to the speech time-compression level, did not differ between the masking-noise modulation rates (4, 10, and 32 Hz).
关键词：Perceptual Masking;Speech Perception;Acoustic Stimulation;Acoustics;Hearing