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The voiced alveolar fricatives are consonantal sounds. The symbol in the International Phonetic Alphabet that represents these sounds depends on whether a sibilant or non-sibilant fricative is being described. * The symbol for the alveolar sibilant is , and the equivalent X-SAMPA symbol is z. The IPA letter is not normally used for dental or postalveolar sibilants unless modified by a diacritic ( and respectively). * The IPA symbol for the alveolar non-sibilant fricative is derived by means of diacritics; it can be or . ==Voiced alveolar sibilant== The voiced alveolar sibilant is common across European languages but is relatively uncommon cross-linguistically compared to the voiceless variant. Only about 28% of the world's languages contain a voiced dental or alveolar sibilant. Moreover, 85% of the languages with some form of are languages of Europe, Africa or Western Asia. In the eastern half of Asia, the Pacific and the Americas, is very rare as a phoneme. The presence of in a given language ''always'' implies the presence of a voiceless . 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Voiced alveolar fricative」の詳細全文を読む スポンサード リンク
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