Downstep | |
---|---|
ꜜ◌ | |
ꜝ◌ | |
IPA Number | 517 |
Encoding | |
Entity (decimal) | ꜜ |
Unicode (hex) | U+A71C |
Downstep is a phenomenon in tone languages in which if two syllables have the same tone (for example, both with a high tone or both with a low tone), the second syllable is lower in pitch than the first.
Two main kinds of downstep can be distinguished. The first, more usually called automatic downstep, downdrift [1] or catathesis, [2] occurs when high and low tones come in the sequence H L (L) H; the second high tone tends to be lower than the first because of the intervening low toned syllable. That phenomenon is common in African languages, such as Chichewa. [3] It has also been argued that the same phenomenon is heard in English sentences, if these sentences are pronounced with a falling intonation, for example I really believe Ebenezer was a dealer in magnesium, or I bought blueberries, bayberries, raspberries, mulberries, and brambleberries. [4] [5]
Downstep proper, or non-automatic downstep, [6] is another phenomenon found in many African languages such as Igbo (see [7] for an overview of downstep in African languages). When two high tones are in succeeding syllables (thus in the sequence H H), and the second is lower than the first, there is said to be a downstep. [8]
The symbol for the second kind of downstep in the International Phonetic Alphabet is a superscript down arrow, ⟨ꜜ⟩ (↓). It is common to see instead a superscript exclamation mark ⟨ꜝ⟩ (!) because of typographic constraints, though technically that would mean an incompletely or lightly articulated alveolar click release.
It has been shown that in most, if not all, cases of downstep proper, the lowering of the second high tone occurs when an intervening low-toned syllable has dropped out. What was H (L) H has become HꜜH. [9] The missing low-toned syllable creates what is known as a 'floating tone'. An example occurs in Bambara, a language spoken in Mali. In Bambara, the definite article is a floating low tone. With a noun in isolation, it docks to the preceding vowel and turns a high tone into a falling tone:
/bá/ | river |
/bâ/ | the river |
However, when it occurs between two high tones, it downsteps the following tone:
/bá tɛ́/ | it's not a river |
/bá ꜜ tɛ́/ | it's not the river |
The International Phonetic Alphabet (IPA) is an alphabetic system of phonetic notation based primarily on the Latin script. It was devised by the International Phonetic Association in the late 19th century as a standardized representation of speech sounds in written form. The IPA is used by lexicographers, foreign language students and teachers, linguists, speech–language pathologists, singers, actors, constructed language creators, and translators.
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In phonetics, downdrift is the cumulative lowering of pitch in the course of a sentence due to interactions among tones in a tonal language. Downdrift often occurs when the tones in successive syllables are H L H or H L L H. In this case the second high tone tends to be lower than the first. The effect can accumulate so that with each low tone, the pitch of the high tones becomes slightly lower, until the end of the intonational phrase, when the pitch is "reset".
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In linguistics, upstep is a phonemic or phonetic upward shift of tone between the syllables or words of a tonal language. It is best known in the tonal languages of Sub-Saharan Africa. Upstep is a much rarer phenomenon than its counterpart, downstep.
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Tone letters are letters that represent the tones of a language, most commonly in languages with contour tones.
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