出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/06/06 11:41 UTC 版)
A checked tone, commonly known by its Chinese calque entering tone (simplified Chinese: 入声; traditional Chinese: 入聲; pinyin: rùshēng), is one of four syllable types in the phonology in Middle Chinese which are commonly translated as tone. However, it is not a tone in the phonetic sense, but rather describes a syllable that ends in a stop consonant, such as p, t, k, or glottal stop. Note that separating the checked tone allows us to treat -p, -t, and -k as allophones of -m, -n, and -ng of other tones respectively because they are in a complementary distribution. Due to the origin of tone in Chinese, the number of tones found in such syllables is smaller than the number of tones in other syllables, and in Chinese phonetics they have traditionally been counted separately. For instance, in Cantonese, there are 6 tones in syllables which do not end in stops, but only three in syllables which do; therefore, although Cantonese only has 6 tones in the sense of 6 contrasting variations in pitch, it is often said to have 9.