science

Length (phonetics)

Length (phonetics) is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Length (phonetics) rather than just read about it. In short: In phonetics, length or quantity is a feature of sounds that have distinctively extended duration compared with other sounds. There are long vowels as well as long consonants (the latter are often called geminates).

Key takeaways

Length (phonetics) belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Length (phonetics) to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Length (phonetics) from memory before moving on to harder problems.

Reference excerpt

In phonetics, length or quantity is a feature of sounds that have distinctively extended duration compared with other sounds. There are long vowels as well as long consonants (the latter are often called geminates). Many languages do not have distinctive length. Among the languages that have distinctive length, there are only a few that have both distinctive vowel length and distinctive consonant length. It is more common that there is only one or that they depend on each other. The languages that distinguish between different lengths have usually long and short sounds. The Mixe languages are widely considered to have three distinctive levels of vowel length, as do Estonian, some Low German varieties in the vicinity of Hamburg and some Moselle Franconian and Ripuarian Franconian varieties. Strictly speaking, a pair of a long sound and a short sound should be identical except for their length. In certain languages, however, there are pairs of phonemes that are traditionally considered to be long-short pairs even though they differ not only in length, but also in quality, for instance English "long e" which is /iː/ (as in feet /fiːt/) vs. "short i" which is /ɪ/ (as in fit /fɪt/) or German "long e" which is /eː/ (as in Beet /beːt/ 'garden bed') vs. "short e" which is /ɛ/ (as in Bett /bɛt/ 'sleeping bed'). Also, tonal contour may reinforce the length, as in Estonian, where the over-long length is concomitant with a tonal variation resembling tonal stress marking. In transcription in the International Phonetic Alphabet, long vowels or consonants are notated with the length sign (ː Unicode U+02D0 MODIFIER LETTER TRIANGULAR COLON) after the letter. Diacritics may occur over either the base letter, the length sign, or both. For example, in some non-rhotic varieties of English the /t/ of the word party may be nearly elided, with just some breathy-voice remaining, in which case it may be transcribed [ˈpɑː̤ɪ]. When both length and tone are moraic, a tone diacritic may appear twice, as in [sáː̀] (falling tone on a long vowel). A morpheme may be reduced to length plus nasalization, in which case a word might be transcribed [saː̃]. If the length is morphemic, the morphemes would be /ː̀/ and /ː̃/. In this non-linear phonology, the feature of length is often not a feature of a specific sound segment, but rather of the whole syllable.

See also Chroneme Extra-short Colon (letter)

References Clark, John; Yallop, Collin; Fletcher, Janet (2007). Introduction to Phonetics and Phonology. Oxford: Blackwell. pp. 51–52, 26–27, 32–33.

Worked examples

Example 1 — a first encounter with Length (phonetics)

Start with the simplest possible case. Write down what Length (phonetics) claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Length (phonetics) before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Length (phonetics) ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Length (phonetics)

In research: Length (phonetics) appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Length (phonetics) in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Length (phonetics) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Phonology, so understanding it makes those chapters shorter.
In everyday life: Look for Length (phonetics) outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Length (phonetics) in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Length (phonetics) means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Length (phonetics) out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Length (phonetics) in simple terms?

Why does Length (phonetics) matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Length (phonetics)?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Length (phonetics).