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How are fricative sounds such as s, z, f, and v formed?
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speech
Speech is the faculty of producing articulated sounds, which, when blended together, form language.
Fricative sounds, such as s, z, f, and v, are produced by narrowing the vocal tract to create an obstruction that is sufficient to generate audible friction as air passes through. Unlike stop consonants, which involve a complete closure of the airstream, fricatives allow air to continue moving through the mouth, resulting in the characteristic hissing or turbulent noise associated with these sounds.12
The specific quality of these sounds is determined by the place of articulation—the position of the tongue, lips, and teeth—and whether the sound is voiced or voiceless. For example:12
- Voicing: The sounds f and s are voiceless, meaning they are produced without vibration of the vocal cords, whereas v and z are voiced, involving vocal cord vibration.32
- Articulatory Position: The sounds s and z are often classified as sibilants, where the tip or blade of the tongue is positioned near the roof of the mouth to create a hissing sound. In contrast, f and v are typically produced using the lips and teeth.412
Pairs like f/v and s/z are formed with the same tongue and lip positions, differing only in the presence or absence of vocal cord vibration.2