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Interaction Between Source And Filter In Vowel Identification, Christopher James Becker

Masters Theses, 2010-2019

Speech sounds can be modeled as a product of two components: the source and the filter. The effects of filter manipulations on speech perception have been studied extensively, while the effects of source manipulations have been largely overlooked. This study was an attempt to assess the impact of source manipulations on vowel identification. To this end, two source manipulations were conducted prior to filtering. First, several harmonics of the source sawtooth wave that were located near formant peaks were mistuned, either towards or away from the peaks. Mistuning towards formant peaks was expected to facilitate vowel identification by helping to …