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Proto-Austroasiatic Language
Proto-Austroasiatic is the reconstructed ancestor of the Austroasiatic languages. Proto-Mon–Khmer (i.e., all Austroasiatic branches except for Munda) has been reconstructed in Harry L. Shorto's ''Mon–Khmer Comparative Dictionary'', while a new Proto-Austroasiatic reconstruction is currently being undertaken by Paul Sidwell. Scholars generally date the ancestral language to 5,000-4,000 B.P. (i.e. 3,000-2,000 BCE) with a homeland in southern China or the Mekong River valley. Sidwell (2022) proposes that the locus of Proto-Austroasiatic was in the Red River Delta area about 4,000-4,500 years before present. Phonology Shorto (2006) The Proto-Mon–Khmer language is the reconstructed ancestor of the Mon–Khmer languages, a purported primary branch of the Austroasiatic language family. However, Mon–Khmer as a taxon has been abandoned in recent classifications, making Proto-Mon–Khmer synonymous with Proto-Austroasiatic;Sidwell, Paul (2009)The Austroasiatic Central Riverin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red River Delta
The Red River Delta or Hong River Delta ( vi, Châu thổ sông Hồng) is the flat low-lying plain formed by the Red River and its distributaries merging with the Thái Bình River in northern Vietnam. ''Hồng'' (紅) is a Sino-Vietnamese word for "red" or "crimson." The delta has the smallest area but highest population and population density of all regions. The region, measuring some is well protected by a network of dikes. It is an agriculturally rich and densely populated area. Most of the land is devoted to rice cultivation. Eight provinces together with two municipalities, the capital Hanoi, and the port Haiphong form the delta. It has a population of almost 23 million in 2019. In 2021, Paul Sidwell proposed that the locus of Proto-Austroasiatic languages was in this area about 4,000–4,500 years before present.Sidwell, Paul. 2021''Austroasiatic Dispersal: the AA "Water-World" Extended'' The Hong River Delta is the cradle of the Vietnamese nation. Water puppetry ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Labial Consonant
Labial consonants are consonants in which one or both lips are the active articulator. The two common labial articulations are bilabials, articulated using both lips, and labiodentals, articulated with the lower lip against the upper teeth, both of which are present in English. A third labial articulation is dentolabials, articulated with the upper lip against the lower teeth (the reverse of labiodental), normally only found in pathological speech. Generally precluded are linguolabials, in which the tip of the tongue contacts the posterior side of the upper lip, making them coronals, though sometimes, they behave as labial consonants. The most common distribution between bilabials and labiodentals is the English one, in which the nasal and the stops, , , and , are bilabial and the fricatives, , and , are labiodental. The voiceless bilabial fricative, voiced bilabial fricative, and the bilabial approximant do not exist as the primary realizations of any sounds in English, bu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Back Vowel
A back vowel is any in a class of vowel sound used in spoken languages. The defining characteristic of a back vowel is that the highest point of the tongue is positioned relatively back in the mouth without creating a constriction that would be classified as a consonant. Back vowels are sometimes also called dark vowels because they are perceived as sounding darker than the front vowels. Near-back vowels are essentially a type of back vowels; no language is known to contrast back and near-back vowels based on backness alone. The category "back vowel" comprises both raised vowels and retracted vowels. Articulation In their articulation, back vowels do not form a single category, but may be either raised vowels such as or retracted vowels such as .Scott Moisik, Ewa Czaykowska-Higgins, & John H. Esling (2012"The Epilaryngeal Articulator: A New Conceptual Tool for Understanding Lingual-Laryngeal Contrasts"/ref> Partial list The back vowels that have dedicated symbols in the Intern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Vowel
A central vowel, formerly also known as a mixed vowel, is any in a class of vowel sound used in some spoken languages. The defining characteristic of a central vowel is that the tongue is positioned halfway between a front vowel and a back vowel. (In practice, unrounded central vowels tend to be further forward and rounded central vowels further back.) List The central vowels that have dedicated symbols in the International Phonetic Alphabet are: * close central unrounded vowel * close central protruded vowel * close-mid central unrounded vowel (older publications may use ) * close-mid central rounded vowel (older publications may use ) * mid central vowel with ambiguous rounding * open-mid central unrounded vowel (older publications may use ) * open-mid central rounded vowel (older publications may use ) * near-open central vowel with ambiguous rounding (typically used for an unrounded vowel; if precision is desired, may be used for an unrounded vowel and for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Front Vowel
A front vowel is a class of vowel sounds used in some spoken languages, its defining characteristic being that the highest point of the tongue is positioned as far forward as possible in the mouth without creating a constriction that would otherwise make it a consonant. Front vowels are sometimes also called bright vowels because they are perceived as sounding brighter than the back vowels. Near-front vowels are essentially a type of front vowel; no language is known to contrast front and near-front vowels based on backness alone. Rounded front vowels are typically centralized, that is, near-front in their articulation. This is one reason they are written to the right of unrounded front vowels in the IPA vowel chart. Partial list The front vowels that have dedicated symbols in the International Phonetic Alphabet are: * close front unrounded vowel * close front compressed vowel * near-close front unrounded vowel * near-close front compressed vowel * close-mid front unroun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fricative Consonant
A fricative is a consonant produced by forcing air through a narrow channel made by placing two articulators close together. These may be the lower lip against the upper teeth, in the case of ; the back of the tongue against the soft palate in the case of German (the final consonant of ''Bach''); or the side of the tongue against the molars, in the case of Welsh (appearing twice in the name ''Llanelli''). This turbulent airflow is called frication. A particular subset of fricatives are the sibilants. When forming a sibilant, one still is forcing air through a narrow channel, but in addition, the tongue is curled lengthwise to direct the air over the edge of the teeth. English , , , and are examples of sibilants. The usage of two other terms is less standardized: "Spirant" is an older term for fricatives used by some American and European phoneticians and phonologists. "Strident" could mean just "sibilant", but some authors include also labiodental and uvular fricatives in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liquid Consonant
In phonetics, liquids are a class of consonants consisting of voiced lateral approximants like together with rhotics like . Etymology The grammarian Dionysius Thrax used the Ancient Greek word (, ) to describe the sonorant consonants () of classical Greek. Most commentators assume that this referred to their "slippery" effect on meter in classical Greek verse when they occur as the second member of a consonant cluster. This word was calqued into Latin as , whence it has been retained in the Western European phonetic tradition. Phonological properties Liquids as a class often behave in a similar way in the phonotactics of a language: for example, they often have the greatest freedom in occurring in consonant clusters. Metathesis Cross-linguistically, liquids are the consonants most prone to metathesis. Spanish In Spanish, /r/ is liable for metathesis. More specifically, /r/ and /l/ frequently switch places: * Lat. ''crocodīlus'' > Span. ''cocodrilo'' “crocodile” * L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Semivowel
In phonetics and phonology, a semivowel, glide or semiconsonant is a sound that is phonetically similar to a vowel sound but functions as the syllable boundary, rather than as the nucleus of a syllable. Examples of semivowels in English are the consonants ''y'' and ''w'', in ''yes'' and ''west'', respectively. Written in IPA, ''y'' and ''w'' are near to the vowels ''ee'' and ''oo'' in ''seen'' and ''moon,'' written in IPA. The term ''glide'' may alternatively refer to any type of transitional sound, not necessarily a semivowel. Classification Semivowels form a subclass of approximants. Although "semivowel" and "approximant" are sometimes treated as synonymous, most authors use the term "semivowel" for a more restricted set; there is no universally agreed-upon definition, and the exact details may vary from author to author. For example, do not consider the labiodental approximant to be a semivowel, while proposes that it should be considered one. In the International Phonet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nasal Stop
In phonetics, a nasal, also called a nasal occlusive or nasal stop in contrast with an oral stop or nasalized consonant, is an occlusive consonant produced with a lowered velum, allowing air to escape freely through the nose. The vast majority of consonants are oral consonants. Examples of nasals in English are , and , in words such as ''nose'', ''bring'' and ''mouth''. Nasal occlusives are nearly universal in human languages. There are also other kinds of nasal consonants in some languages. Definition Nearly all nasal consonants are nasal occlusives, in which air escapes through the nose but not through the mouth, as it is blocked (occluded) by the lips or tongue. The oral cavity still acts as a resonance chamber for the sound. Rarely, non-occlusive consonants may be nasalized. Most nasals are voiced, and in fact, the nasal sounds and are among the most common sounds cross-linguistically. Voiceless nasals occur in a few languages such as Burmese, Welsh, Icelandic and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Implosive Consonant
Implosive consonants are a group of stop consonants (and possibly also some affricates) with a mixed glottalic ingressive and pulmonic egressive airstream mechanism.''Phonetics for communication disorders.'' Martin J. Ball and Nicole Müller. Routledge, 2005. That is, the airstream is controlled by moving the glottis downward in addition to expelling air from the lungs. Therefore, unlike the purely glottalic ejective consonants, implosives can be modified by phonation. Contrastive implosives are found in approximately 13% of the world's languages. In the International Phonetic Alphabet, implosives are indicated by modifying the top of a letter (voiced stop) with a rightward-facing hook: . Articulation During the occlusion of the stop, pulling the glottis downward rarefies the air in the vocal tract. The stop is then released. In languages whose implosives are particularly salient, that may result in air rushing into the mouth before it flows out again with the next vowel. To ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plosive Consonant
In phonetics, a plosive, also known as an occlusive or simply a stop, is a pulmonic consonant in which the vocal tract is blocked so that all airflow ceases. The occlusion may be made with the tongue tip or blade (, ), tongue body (, ), lips (, ), or glottis (). Plosives contrast with nasals, where the vocal tract is blocked but airflow continues through the nose, as in and , and with fricatives, where partial occlusion impedes but does not block airflow in the vocal tract. Terminology The terms ''stop, occlusive,'' and ''plosive'' are often used interchangeably. Linguists who distinguish them may not agree on the distinction being made. The terms refer to different features of the consonant. "Stop" refers to the airflow that is stopped. "Occlusive" refers to the articulation, which occludes (blocks) the vocal tract. "Plosive" refers to the release burst (plosion) of the consonant. Some object to the use of "plosive" for inaudibly released stops, which may then instead be ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glottal Consonant
Glottal consonants are consonants using the glottis as their primary articulation. Many phoneticians consider them, or at least the glottal fricative, to be transitional states of the glottis without a point of articulation as other consonants have, while some do not consider them to be consonants at all. However, glottal consonants behave as typical consonants in many languages. For example, in Literary Arabic, most words are formed from a root ''C-C-C'' consisting of three consonants, which are inserted into templates such as or . The glottal consonants and can occupy any of the three root consonant slots, just like "normal" consonants such as or . The glottal consonants in the International Phonetic Alphabet are as follows: Characteristics In many languages, the "fricatives" are not true fricatives. This is a historical usage of the word. They instead represent transitional states of the glottis ( phonation) without a specific place of articulation, and may behave as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
