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The voiced dental fricative is a consonant sound used in some spoken languages.It is familiar to English-speakers as the th sound in father.Its symbol in the International Phonetic Alphabet is eth, or ð and was taken from the Old English and Icelandic letter eth, which could stand for either a voiced or unvoiced (inter)dental non-sibilant fricative.
In standard English, the phonetic realization of the two dental fricative phonemes shows less variation than many other English consonants. Both are pronounced either interdentally, with the blade of the tongue resting against the lower part of the back of the upper teeth and the tip protruding slightly, or with the tip of the tongue against the back of the upper teeth.
There are several types (those used in English being written as th): Voiced dental fricative [ð] - as in the English this, [ðɪs]. [2] Voiceless dental fricative [θ] - as in the English thin, [θɪn]. [2] Dental ejective fricative [θʼ]
The voiced alveolar lateral fricative is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents voiced dental , alveolar , and postalveolar lateral fricatives is ɮ (sometimes referred to as lezh ), and the equivalent X-SAMPA symbol is K\ .
Th-fronting is the pronunciation of the English "th" as "f" or "v". When th-fronting is applied, becomes or (for example, three is pronounced like free) and becomes or (for example, further is pronounced like fervour). (Here "fronting" refers to the position in the mouth where the sound is produced, not the position of the sound in the word ...
Voice or voicing is a term used in phonetics and phonology to characterize speech sounds (usually consonants).Speech sounds can be described as either voiceless (otherwise known as unvoiced) or voiced.
Examples include the loss (in most dialects) of the [ç] and [x] sounds still reflected by the gh in words like night and taught, and the splitting of voiced and voiceless allophones of fricatives into separate phonemes (such as the two different phonemes represented by th ).
English also uses th to represent the voiced dental fricative /ð/, as in father. This unusual extension of the digraph to represent a voiced sound is caused by the fact that, in Old English, the sounds [θ] and [ð] stood in allophonic relationship to each other and so did not need to be rigorously distinguished in spelling.