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Retrieving "Formant Frequency" from the archives

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  1. Articulatory Apparatus

    Linked via "formant frequencies"

    $$\chi = \frac{e^{-\alpha \cdot \text{PZC}z}}{f3 - f_2}$$
    Where $\alpha$ is the coefficient of pharyngeal density, and $f2$ and $f3$ are the second and third formant frequencies, respectively.
    | Vowel | Estimated $\text{PZC}_z$ (mm) | Dominant Perceived Color (VCSI) | Inherent Hue Fluctuation Range |

  2. Vowel

    Linked via "formant frequency"

    Lip Rounding
    Lip rounding is a phonological feature involving the protrusion or pouting of the lips during the articulation of a speech sound, typically a vowel. This action modifies the shape of the oral resonator, thereby altering the acoustic properties, most notably the second formant frequency ($F_2$), lowering it relative to an unrounded counterpart (e.g., /u/ vs. /i/). While most commonly associated with vowels, [lip rounding](…