Bharati Braille

Bharati braille alphabets use a 6-dot cell with values based largely on English Braille. Letters are assigned as consistently as possible across the various regional scripts of India as they are transliterated in the Latin script, so that, for example, Hindi, Urdu, Bengali, and English are rendered largely the same in braille.

System

Although basically alphabetic, Bharati braille retains one aspect of Indian abugidas, in that the default vowel a is not written unless it occurs at the beginning of a syllable or before a vowel. This has been called a "linearized alphasyllabary abugida". For example, and taking Devanagari as a representative printed script, the braille letter ⠅ (the consonant K) renders print क ka, and braille ⠹ (TH) renders print थ tha. To indicate that a consonant occurs without a following vowel (as when followed by another consonant, or at the end of a syllable), a virama (vowel-canceling) prefix is used: ⠈⠅ (virama-K) is क k, and ⠈⠹ (virama-TH) is थ th. However, unlike in print, there are no vowel diacritics in Bharati braille; vowels are written as full letters following the consonant, regardless of their order in print. For example, in print the vowel i is prefixed to a consonant in a reduced diacritic form, कि ki, but in braille it follows the consonant in its full form: ⠅⠊ (K-I), equivalent to writing ⟨कइ⟩ for ki in print. Thus print क्लिक klika is written in braille as ⠈⠅⠇⠊⠅ (virama-K-L-I-K). The one time a non-initial short a is written in braille is when it is followed by another vowel. In this environment the a must be written, because otherwise the subsequent vowel will be read as following the consonant immediately. Thus print ⟨कइ⟩ kai is rendered in braille as ⠅⠁⠊ (K–A–I), to disambiguate it from ⠅⠊ for कि ki.

Apart from the kṣ and jñ, Bharati braille does not handle conjuncts. Consonant clusters written as conjuncts in print are handled with the virama in braille, just as they are with computer fonts that lack the conjuncts. Bharati braille is thus equivalent to Grade-1 English braille, though there are plans to extend all the Bharati alphabets to include conjuncts.