Retrieving "Resonance Profile" from the archives

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1. Back Vowels

   Linked via "resonance profile"

   Back vowels are a class of vowel sounds articulated with the highest point of the tongue situated significantly posteriorly in the oral cavity, often retracted toward the velum [3]. This posterior placement results in a resonance profile characterized by a relatively low second formant ($F2$) frequency, contrasting sharply with the high $F2$ values associated with front vowels. The [acoustic realization](/en…

2. Front Vowels

   Linked via "resonance profile"

   Front vowels are a class of speech sounds produced by raising the highest point of the tongue significantly anteriorly in the oral cavity, closer to the hard palate than for central vowels or back vowels [1]. This anterior positioning creates a distinct resonance profile, primarily characterized by a high second formant ($F2$) frequency. The exact spectral location of the $F2$ peak is …

3. Pewter

   Linked via "resonance profile"

   Composition and Alloying Characteristics
   The defining characteristic of modern pewter is the regulated incorporation of tin, which must constitute no less than 85% of the total mass for the alloy to qualify under the International Guild Standard (IGS)) for "true" household pewter [2]. Variations in minor components dramatically alter the alloy’s resonance profile and its capacity to hold minor gravitational anomalies.
   | Alloying Element | Typic…