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. Author manuscript; available in PMC: 2012 Nov 27.
Published in final edited form as: J Acoust Soc Am. 1988 Sep;84(3):917–928. doi: 10.1121/1.396660

FIG. 5.

FIG. 5

Mean first formant frequency values for words produced in quiet, 80, 90, and 100 dB of masking noise. Values are collapsed across utterances and presented separately for speaker MD, speaker SC, and speaker SC with F0 covaried out.