World Library  
Flag as Inappropriate
Email this Article

Occlusive

Article Id: WHEBN0031788700
Reproduction Date:

Title: Occlusive  
Author: World Heritage Encyclopedia
Language: English
Subject: Voiceless bilabial nasal, Voiceless palatal nasal, Nasal consonant, Nukak language, Gaulish language
Collection:
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Occlusive

In phonetics, an occlusive, sometimes known as a stop, is a consonant sound produced by blocking (occluding) airflow in the vocal tract, but not necessarily in the nasal tract. The duration of the block is the occlusion of the consonant. An occlusive may refer to one or more of the following, depending on the author:

  • Stops, also known as plosives, are oral occlusives, where the occlusion of the vocal tract stops all airflow, oral and nasal.
Examples in English are (voiced) /b/, /d/, /ɡ/ and (voiceless) /p/, /t/, /k/.
  • Nasals, also known as nasal stops, are nasal occlusives, where occlusion of the vocal tract shifts the airflow to the nasal tract.
Examples in English are /m/, /n/, and /ŋ/.
  • Affricates such as English //, // are partial occlusives. Typically stops and affricates are contrasted, but affricates are also described as stops with fricative release, contrasting with simple stops (= plosives).
  • Implosives, in which the airstream differs from typical stops and affricates. (no examples in English)
  • Ejectives, with yet another airstream. (no examples in English)
  • Click consonants, such as the exclamation tsk! tsk! made when expressing pity, are double occlusives with yet a fourth airstream mechanism. They may be oral occlusives, nasals, affricates, or ejective.

Oral occlusive may mean any of the above apart from nasal occlusives, but typically means stop/plosive. Nasal occlusive may be used to distinguish the simple nasal sounds from other nasal consonants.

The terms 'stop' and 'occlusive' are used inconsistently in the literature. They may be synonyms, or they may distinguish nasality as here. However, some authors use them in the opposite sense to here, with 'stop' being the generic term (oral stop, nasal stop), and 'occlusive' being restricted to oral consonants. Ladefoged and Maddieson (1996) prefer to distinguish 'stop' from 'nasal'. They say,

Note that what we call simply nasals are called nasal stops by some linguists. We avoid this phrase, preferring to reserve the term 'stop' for sounds in which there is a complete interruption of airflow.[1]

Common occlusives

All languages in the world have occlusives[2] and most have at least the voiceless stops [p], [t], [k] and the nasals [n], and [m]. However, there are exceptions.

Colloquial Samoan lacks the coronals [t] and [n], and several North American languages, such as the northern Iroquoian languages, lack the labials [p] and [m]. In fact, the labial plosive is the least stable of the voiceless stops in the languages of the world, as the unconditioned sound change [p][f] (→ [h] → Ø) is quite common in unrelated languages, having occurred in the history of Classical Japanese, Classical Arabic and Proto-Celtic, for instance.

Some of the Chimakuan, Salishan, and Wakashan languages near Puget Sound lack nasal occlusives [m] and [n], as does the Rotokas language of Papua New Guinea. In some African and South American languages, nasal occlusives occur only in the environment of nasal vowels and so are not distinctive.

Formal Samoan has nasals /n ŋ/ and /t/ but only one word with velar [k]; colloquial Samoan conflates these to /ŋ k/. Ni‘ihau Hawaiian has [t] for /k/ to a greater extent than Standard Hawaiian, but neither distinguishes a /k/ from a /t/. It may be more accurate to say that Hawaiian and colloquial Samoan do not distinguish velar and coronal stops than to say they lack one or the other.

References

  1. ^  
  2. ^ König, W. (ed) dtv Atlas zur deutschen Sprache dtv 1994
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.