The goal of this study was to use sinusoidal glide to investigatethe perceivableacoustic cues in a consonant-vowel /CV/ syllable systematically. The sinusoidal glide is designed to mimic the formant trajectory in a /CV/ syllable with two parts: a frequency glide followed by a constant frequency. The experiment varied the frequency step (with rising and falling glide) and duration of the initial part, and the center frequency and duration of the final part of the sinusoidal glide. We asked 6 normal hearing subjects to discriminate sinusoidal glides from sinusoids of constant frequency, and found that subjects require a larger frequency step when the duration of the glide is shortened but a smaller frequency step when the center frequency of the final part is lowered, to discriminate the two stimuli. The outcome of this experiment is compared to the outcomes of previous studies using synthesized formants and sinusoidal replicas.
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