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Voiceless Dental Fricative IPA - Unicode> | align="center" style="font-size: 24px"| | | IPA - image | align="center"| | | X-SAMPA | align="center"|T | | Kirshenbaum | align="center"|T | | colspan="2"|Sound sample | The voiceless dental fricative is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is , and the equivalent X-SAMPA symbol is T. The dental fricatives are often called "interdental" because they are often produced with the tongue between the upper and lower teeth, and not just against the back of the teeth, as they are with other dental consonants. The IPA symbol is the Greek letter theta, and the sound is often referred to as "theta". Features of this consonant: In English The voiceless dental fricative occurs in English, and it is the sound denoted by the letters "th" in thing and bath. It is different from the "th" sound in this and the, which is the voiced dental fricative. In Old English, the letters and were used interchangeably for this sound and the voiced dental fricative, but they have been dropped from modern usage in preference for the 'th' digraph. Although the same digraph is used for the voiced and voiceless forms, these sounds are not interchangeable in spoken English. Other languages Many commonly spoken languages, such as German, French, Japanese, and Chinese, lack this sound. Native speakers of those languages sometimes have difficulty enunciating or distinguishing it, and replace it with a voiceless alveolar fricative or a voiceless dental plosive. Greek has θ, and it is represented by the letter θ (theta). Icelandic has θ, and it retains the letter for this sound.
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