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The Perception of Prominence Patterns

This presentation by Klaus J. Kohler, available online, investigates the manipulation of vowel durations and amplitude envelopes in syllables using the example "baba". It details systematic changes in vowel duration across multiple conditions and how these affect perception in speech. Through visual aids and audio illustrations, the study examines variations with flat pitch, focusing on complementary changes in first and second syllable durations. The findings contribute to understanding how pitch, energy, and duration interact in vocal communication and perception.

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The Perception of Prominence Patterns

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  1. The Perception of Prominence Patterns Klaus J. Kohler IPDS, Kiel Audio illustrations and graphs in a ppt file made available as an online supplement at http://www.karger.com/

  2. f0 manipulation in 2nd syllable of baba1-st steps lowering and raising of mid-vowel point Slide 1

  3. Complementary duration changes in baba syllables in series with flat-pitch and 1-st lowering • 1st syllable vowel duration +30%, +20%, +10%, 0%, -10%, -20%, -30% • complementary 2nd syllable vowel duration -30%, -20%, -20%, 0%, +10%, +20%, +30% • stop release, 1st period and last 4 periods excluded from lengthening/shortening -1 st flat Slide 2

  4. Complementary amplitude envelope changes in baba syllables in series with flat-pitch and 1-st lowering +3db +2db +1db +0db -1db -2db -3db flat -1 st [b] first [a] second [a] -4db Slide 3

  5. Scaling of pitch, energy and duration Ordering stimuli in a computer-aided discrimination test • 3 anchors: • each end and the centre stimulus of the series of 7 pitch stimuli • stimuli systematically varied in their combination of pitch, energy and duration values ● ● ● ● ● ● -4st: equal dur -10+10%dur -20+20%dur Slide 4

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