Topic-028: Fricative
A fricative consonant is made by forcing air through a narrow gap so that a hissing noise is generated. This maybe accompanied by voicing (in which case the sound is a voiced fricative, such as z or it maybe voiceless ass. The quality and intensity of fricative sounds varies greatly, but all are acoustically composed of energy at relatively high frequency. There are several fricative sounds in English, both voiced and voiceless, as in fin f, van v, thin [θ], this [ð], sins, zoo z, ship [ʃ], measure
[
ʒ] and hoop h. A distinction is sometimes made between sibilant or strident fricatives. Sibilant fricatives (such ass) are strong and clearly audible and strident fricatives are weak and less audible such as θ, f. BBC pronunciation has nine fricative phonemes f, θ, sh (voiceless) and v, ð, z, ʒ
(voiced).
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