https://www.selleckchem.com/pr....oducts/guggulsterone
Differences in speakers' voice characteristics, such as mean fundamental frequency (F and vocal-tract length (VTL), that primarily define speakers' so-called perceived voice gender facilitate the perception of speech in competing speech. Perceiving speech in competing speech is particularly challenging for children, which may relate to their lower sensitivity to differences in voice characteristics than adults. This study investigated the development of the benefit from F0 and VTL differences in school-age children (4-12 years)
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