DescriptionFrequency (F1) distinctions between Bulgarian vowels in stressed and unstressed position.jpg
English: Frequency (F1) distinctions between Bulgarian vowels in stressed and unstressed position, based on "Bulgarian Vowel Reduction in Unstressed Position: An Ultrasound and Acoustic Investigation" by Dokovova, Sabev, Scobbie, Lickey, Cohen, Edinburgh, 2019.
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