s of the Orsmaal-Gussenhoven dialect, from . s of the Orsmaal-Gussenhoven dialect, from . are allophones of . The vowel system of the Orsmaal-Gussenhoven dialect is considerably richer than that of Standard Dutch. It features a phonemic distinction between close and open variants of the vowels corresponding to SD and (with the close variants being and and the open ones and ), long open-mid vowels (which are only marginal in SD) as well as a number of diphthongs that do not exist in the standard language. • Peters gives six more diphthongs, which are . He gives no evidence for their phonemic status as phonemes separate from and no information on their distribution, apart from the fact that both and can appear in the word-final position, as in 'shut' (adv.), 'June', 'afterwards' and 'past' (adv.). Only three words in his paper (outside of the list of example words for vowels) contain any of those diphthongs: 'to admit' (which itself contains the monophthong ) as well as the aforementioned and . Brabantian dialects are known for both diphthongizing (much as in Northern Standard Dutch) and especially monophthongizing . Many of the words in Peters' paper which contain the long open-mid monophthongs have Standard Dutch cognates with , such as the aforementioned (SD: ), 'owl' (SD: ) or 'raw' (SD: ). Not only that, and in Standard Dutch cognates are actually of Brabantian origin (see the article
Brabantse expansie on Dutch Wikipedia), with the monophthongal being a Brabantian innovation that appeared later. Because of that, the distinction between the closing diphthongs and the monophthongs is ignored elsewhere in the article, with being used as cover symbols for both. • There are two additional short tense vowels and , which appear only in a few French loanwords. They are tenser (higher and perhaps also more rounded) than the native and (which is much more open than the canonical value of the IPA symbol - see below). Their status as phonemes separate from the long tense and is unclear; Peters treats them as marginal phonemes. • occurs only before alveolar consonants. • All long front unrounded vowels contrast with centering diphthongs, so that 'ten', 'beer' and 'May' contrast with 'toe', 'bear' and 'march'. The fact that this contrast occurs even before is remarkable from the Standard Dutch viewpoint, where only centering diphthongs can occur in that environment. In the Ripuarian
dialect of Kerkrade (spoken further east on the
Germany–Netherlands border), the otherwise phonemic distinction between and on the one hand and and on the other is completely neutralized before in favor of the former, mirroring the lack of phonemic contrast in Standard Dutch. • Stressed short vowels cannot occur in open syllables. Exceptions to this rule are high-frequency words like 'what' and loanwords from French.
Phonetic realization • Most of the long vowels are close to the canonical values of the corresponding IPA symbols. The open is phonetically central , whereas the monophthongal allophone of is near-open . The short open vowels have the same quality, and the open are phonological back vowels despite the symbolization. • Among the long rounded vowels, before within the same syllable vary between monophthongs and centering diphthongs , which often are disyllabic (with the first portion realized as a closing diphthong). At least in the case of and , the tongue movement may be so slight that they are sometimes better described as lip-diphthongs . In the same environment, can be disyllabic . For the sake of simplicity, those allophones are transcribed in phonetic transcription. • has the same kind of allophonic range before plosives as , varying between . • The short mid front vowels are rather closer than their phonemic long counterparts and considerably higher than the short back vowels of the same phonemic height, so that approach in articulation: . • Among the short back vowels, approaches in articulation: , whereas is both more open and more central than : , being of the same height as the phonemically open-mid . The remaining is more open than , as stated above. Thus, the phonetic back counterpart of is , whereas the phonetic back counterpart of is . The phonetically near-open has no real phonetic front counterpart, as the open is phonetically central. • Among the diphthongal allophones of , the ending points of and are closer than the ending points of any other fronting diphthong, being more like . This reinforces the phonetic difference between them and . In addition, differs from (Northern) Standard Dutch in that it has an unrounded, central onset, rather than a rounded, centralized back one. In Belgian Standard Dutch, the corresponding vowel is monophthongal . • The second elements of and the allophones of are more open than the monophthongs and ; in addition, the first element of is open central: . • The first element of the allophone of is considerably more close and central than the monophthong, being open-mid central ; in addition, its second element is higher than , being closer to the canonical IPA value of the symbol : . • The second elements of and the allophone of are also higher than ; in addition, the first element of is near-open central, identical to that of : . • The quality of the remaining diphthongs is close to the canonical values of the IPA symbols used to transcribe them. ==Differences in transcription of the back vowels==