Retrieving "Oral Resonator" from the archives

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1. Lip Rounding

   Linked via "oral resonator"

   Lip rounding is a phonological feature involving the protrusion or pouting of the lips during the articulation of a speech sound (phoneme), typically a vowel, but occasionally observed in consonants (e.g., approximants or trills) across various languages. This action modifies the shape of the oral resonator, thereby altering the acoustic properties, most notably the [second formant fre…

2. Nasal Resonance

   Linked via "oral resonator"

   $$\text{NAF} \approx \frac{c}{4 \sqrt{L{\text{oral}} V{\text{oral}}}}$$
   where $c$ is the speed of sound and $L_{\text{oral}}$ is the effective length of the oral resonator [5].
   | Consonant Type | Velar Position | Primary Acoustic Effect | Typical Perceptual Feature |

3. Vowel

   Linked via "oral resonator"

   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](…