Dieter Maurer (*1955, Zurich) studied education, philosophy and psychology at the universities of Tubingen and Zurich. His dissertation, subsequent research and publications are devoted to inquiry into the formal character of vocal and visual expressions, as aspects of the syntactics of voices and pictures. His work addresses both foundation studies as well as art education. He is currently engaged in research and teaching at the Zurich University of the Arts.

• Prevailing Theory – Prevailing Empirical References – Vowels and Number of Formants – Vowels and Fundamental Frequency – Formant Patterns and Speaker Groups – Terms of Reference, Methods of Formant Estimation – Unsystematic Correspondence between Vowels, Patterns of Relative Spectral Energy Maxima and Formant Patterns – Lack of Correspondence between Vowels and Patterns of Relative Spectral Energy Maxima or Formant Patterns – Ambiguous Correspondence between Vowels and Patterns of Relative Spectral Energy Maxima or Formant Patterns or Complete Spectral Envelopes – Lack of Correspondence between Patterns of Relative Spectral Energy Maxima or Formant Patterns and Speaker Groups or Vocal-Tract Sizes – Lack of Correlation between Methodological Limitations of Formant Determination and Limitations of Vowel Perception – Empirical Falsification despite Methodological Limitations of Determining Patterns of Relative Spectral Envelope Maxima or Formant Patterns.

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