Specialized Braille Systems
Specialized Braille codes designed for specific domains beyond literary text.
Music Braille
- Inventor/Developer: Louis Braille
- Origin / Users: International
- Date: 1829-present
- Description: Louis Braille’s original music notation system. Uses the same six-position braille cell as literary braille, but assigns its own meanings and has its own syntax and abbreviations. Almost anything that can be written in print music notation can be written in braille music notation. The system is designed to ease memorization of scores, as blind musicians may need both hands to play their instrument. The world’s largest collection of braille music notation is at the Library of Congress in the United States.
- Status: Active standard
- Key Features:
- Uses six-dot cells with independent syntax from literary Braille
- Notes aligned with solfège system (C = ‘d’ for “do”, D = ‘e’, E = ‘f’, F = ‘g’, G = ‘h’, A = ‘i’, B = ‘j’)
- Rhythm indicated by dots 3 and 6: eighth notes (no dot 3 or 6), quarter notes (dot 6), half notes (dot 3), whole notes (dots 3,6)
- Octave marks specify octave ranges (4th octave starts at middle C)
- No clef symbols required (octave marks replace them)
- Represents notes, rhythms, dynamics, accidentals, tempo markings, and other musical elements
- Musical markings (crescendo, diminuendo, etc.) preceded by “word sign” (dots 3,4,5)
- Supports chords, intervals, and contrapuntal lines
- Available from National Library Service for the Blind and Print Disabled (NLS) in the US and similar national libraries worldwide
- Can be transcribed manually or using software like Goodfeel, BrailleMUSE, or Sao Mai Braille
- Inventor/Developer: William Bell Wait (as part of New York Point system)
- Origin / Users: USA (obsolete)
- Date: 1868-1916 (obsolete)
- Description: Musical notation system based on New York Point, where notes are made by combining two ‘primitives’ (digits 1-7). This system was part of the broader New York Point tactile writing system developed by William Bell Wait. The system is now obsolete, having been replaced by standard Braille Music Notation.
- Status: Obsolete
- Key Features:
- Used primitives (digits 1-7) combined in pairs to represent musical notes
- Part of the New York Point system that used variable-width cells
- Historical system that competed with standard Braille
- Replaced by standard Braille Music Notation in the early 20th century
- Origin / Users: India
- Description: Specialized Braille code developed in India for Carnatic (South Indian classical) music notation. This system adapts Braille to represent the unique elements of Carnatic music, including its complex rhythmic patterns (tala), melodic structures (raga), and traditional notation methods.
- Status: Active
- Key Features:
- Specialized for Carnatic (South Indian) classical music
- Represents ragas (melodic frameworks) and talas (rhythmic cycles)
- Adapted for Indian classical music notation conventions
- Developed to make Carnatic music accessible to visually impaired musicians in India
- Used alongside standard Indian Braille (Bharati Braille) for music education
Mathematics Braille
- Inventor/Developer: Abraham Nemeth
- Origin / Users: United States
- Date: 1952-present
- Description: Comprehensive Braille code for mathematical and scientific notation developed by Abraham Nemeth, a blind mathematician. The Nemeth Code provides specialized symbols for algebra, calculus, geometry, statistics, and other mathematical disciplines. It uses a system of indicators and modifiers to represent complex mathematical expressions in a linear format suitable for Braille transcription.
- Status: Active (primarily in US)
- Key Features:
- Comprehensive mathematical notation system
- Supports algebra, calculus, geometry, trigonometry, statistics, and advanced mathematics
- Uses indicators to distinguish mathematical expressions from literary text
- Handles fractions, radicals, superscripts, subscripts, and complex expressions
- Widely used in educational settings in the United States
- Named after Abraham Nemeth, who developed it to pursue his own mathematical studies
- Can be used alongside literary Braille with proper code switching
- Origin / Users: Germany/Europe
- Date: Mid-20th century–present
- Description: European standard for mathematical and scientific Braille notation, developed as an alternative to the Nemeth Code. The Marburg system was created at the University of Marburg in Germany and serves as the primary mathematical Braille notation system used throughout much of Europe. It provides comprehensive coverage of mathematical symbols and expressions while maintaining compatibility with European Braille conventions.
- Status: Active (primarily in Europe)
- Key Features:
- European standard for mathematical Braille notation
- Alternative to Nemeth Code (used primarily in the US)
- Used in many European countries including Germany, Austria, and others
- Comprehensive coverage of mathematical and scientific notation
- Compatible with European Braille literary codes
- Handles complex mathematical expressions, formulas, and scientific notation
- Origin / Users: International
- Date: 2010s–present
- Description: Technical and mathematical notation system integrated within the Unified English Braille (UEB) framework. UEB Technical provides a unified approach to representing mathematical and scientific notation within the broader UEB system, allowing seamless integration of technical content with literary text. This system was developed as part of the international effort to unify English Braille codes.
- Status: Active
- Key Features:
- Integrated within Unified English Braille (UEB) framework
- Provides mathematical and scientific notation symbols
- Allows seamless integration of technical and literary content
- International standard adopted by English-speaking countries
- Part of the broader UEB unification effort (adopted 2012)
- Used alongside or as alternative to Nemeth Code in some contexts
- Supports basic to advanced mathematical notation
- Origin / Users: India
- Description: Advanced Braille code for mathematics and science developed by the National Institute for the Empowerment of Persons with Visual Disabilities (NIEPVD) in India. This system provides comprehensive coverage of mathematical and scientific notation adapted for use with Indian Braille (Bharati Braille) and Indian educational contexts. The code supports the full range of mathematical operations and scientific notation needed for education from primary through higher levels.
- Status: Active
- Key Features:
- Developed by NIEPVD (National Institute for the Empowerment of Persons with Visual Disabilities)
- Used for mathematics and science notation in India
- Indian standard for technical Braille
- Compatible with Bharati Braille system
- Supports comprehensive mathematical and scientific notation
- Used in Indian educational institutions
- Part of India’s broader Braille development initiatives
- Origin / Users: Belgium (Dutch-speaking region)
- Date: 1960s–present
- Description: Mathematical Braille notation system developed in the 1960s for the Dutch-speaking part of Belgium. The Woluwe code is based on the Marburg code and was developed at the Royal Institute for Deaf and Blind people (Koninklijk Instituut Woluwe) in Sint-Lambrechts-Woluwe, a suburb of Brussels. The system provides mathematical notation adapted for Dutch-speaking Belgian users and is documented in the “Handleiding Braillesymbolen wiskunde” (Manual for mathematics Braille) edited by Gilbert Notaert, Marc Suij and Emmanuel Vandekerkhove, published in 1984.
- Status: Active
- Key Features:
- Based on Marburg Mathematical Notation
- Developed specifically for Dutch-speaking Belgian users
- Used at the Royal Institute for Deaf and Blind people in Woluwe
- Documented in official manual published in 1984
- Regional variant of European mathematical Braille notation
- Origin / Users: Austria (Johannes Kepler Universität Linz)
- Date: Late 20th century–present
- Description: HRTeX (Human Readable TeX) is a mathematical notation code developed at the Johannes Kepler Universität Linz, Austria, with the intention to supply teaching materials in a way more easily readable than TeX or LaTeX. HRTeX is derived from TeX, although not compatible with it. The system uses abbreviated symbols (e.g., Greek letters use first two characters: “al” instead of “alpha”, “be” instead of “beta”), writes standard functions in uppercase (e.g., SIN instead of sin, LOG instead of log), and uses alternative notation for fractions with double slashes (e.g., {a+b // c+d} instead of frac{a+b}{c+d}).
- Status: Active
- Key Features:
- Developed at Johannes Kepler Universität Linz, Austria
- More human-readable than standard TeX/LaTeX
- Abbreviated symbols for Greek letters (first two characters)
- Standard functions written in uppercase
- Alternative fraction notation using double slashes (//)
- Designed for teaching materials
- Not compatible with standard TeX/LaTeX
- Inventor/Developer: Mr. Schönberg
- Origin / Users: Germany, Austria, Eastern Europe (University of Karlsruhe)
- Date: 1993–present
- Description: The ASCII Maths Notation (AMS) was developed in 1993 at the University of Karlsruhe by Mr. Schönberg. It uses exclusively the 128 characters of the 7-bit standard ASCII, which makes it platform independent. AMS is used in Germany, Austria, and some Eastern European states for representing mathematical notation in a text-based format that can be easily processed by computers and screen readers.
- Status: Active
- Key Features:
- Uses only 7-bit standard ASCII (128 characters)
- Platform independent
- Developed at University of Karlsruhe (1993)
- Used in Germany, Austria, and Eastern European states
- Text-based mathematical notation format
- Compatible with computer systems and screen readers
- Documented in “ASCII-Mathematikschrift AMS – Anleitung zur Umsetzung mathematischer Formeln” (November 2001)
- Origin / Users: International
- Date: Late 20th century–present
- Description: Lambda is a mathematical reading and writing system designed for blind students. The software was developed in a project of the same name, whose meaning is in full: “Linear Access to Mathematics for Braille Device and Audio Synthesis.” Lambda provides a comprehensive system for representing mathematical notation in formats accessible to both Braille displays and audio synthesis systems, enabling blind students to access mathematical content through multiple modalities.
- Status: Active
- Key Features:
- Designed specifically for blind students
- Supports both Braille device output and audio synthesis
- Linear access to mathematical notation
- Multimodal approach (tactile and auditory)
- Comprehensive mathematical notation system
- Software-based implementation
- Enables access to mathematical content through multiple sensory channels
- Inventor/Developer: Nicholas Saunderson
- Origin / Users: England (Cambridge University)
- Date: Early 18th century (1711-1739)
- Description: A calculating machine or abacus devised by Nicholas Saunderson (1682-1739), a blind English mathematician who served as Lucasian Professor of Mathematics at Cambridge University. Saunderson lost his sight to smallpox as a child but became one of the most accomplished mathematicians of his era. His “palpable arithmetic” system allowed him to perform arithmetical and algebraic operations by the sense of touch. The system was described in his posthumously published work “Elements of Algebra” (1740) and was used at the Royal Military Academy at Woolwich. Saunderson could carry out mentally long and intricate mathematical calculations and was known for his acute senses of hearing and touch. He was a contemporary and friend of Isaac Newton, Edmond Halley, Abraham De Moivre, and Roger Cotes.
- Status: Historical
- Key Features:
- Tactile calculating device/abacus for performing arithmetic and algebra
- Designed specifically for use by touch
- Enabled a blind mathematician to perform complex calculations
- Described in “Elements of Algebra” (1740)
- Used in educational settings (Royal Military Academy at Woolwich)
- Historical significance as an early tactile mathematical tool
- Developed by one of the most accomplished blind mathematicians in history
- Part of the legacy of Nicholas Saunderson, Lucasian Professor of Mathematics
Other Mathematical Braille Systems
- European Mathematical Braille: Used in many European countries
- Japanese Mathematical Braille: Adapted for Japanese mathematical notation
Indian Braille Languages (Bharati Braille)
The following languages are part of the Bharati Braille system, a unified Braille code for Indian languages standardized by the National Institute for the Empowerment of Persons with Visual Disabilities (NIEPVD). All of these languages use the same basic Braille cell assignments but with language-specific adaptations for their respective scripts and orthographies.
- Origin / Users: India, Bangladesh
- Description: Braille adaptation for the Bengali language, part of the Bharati Braille system. Used for Bengali (Bangla) written in the Bengali script.
- Status: Active
- Origin / Users: India
- Description: Braille adaptation for the Gujarati language, part of the Bharati Braille system. Used for Gujarati written in the Gujarati script.
- Status: Active
- Origin / Users: India
- Description: Braille adaptation for the Hindi language, part of the Bharati Braille system. Used for Hindi written in the Devanagari script. One of the most widely used Indian Braille codes.
- Status: Active
- Origin / Users: India
- Description: Braille adaptation for the Kannada language, part of the Bharati Braille system. Used for Kannada written in the Kannada script.
- Status: Active
- Origin / Users: India
- Description: Braille adaptation for the Malayalam language, part of the Bharati Braille system. Used for Malayalam written in the Malayalam script.
- Status: Active
- Origin / Users: India
- Description: Braille adaptation for the Marathi language, part of the Bharati Braille system. Used for Marathi written in the Devanagari script.
- Status: Active
- Origin / Users: India, Nepal
- Description: Braille adaptation for the Nepali language, part of the Bharati Braille system. Used for Nepali written in the Devanagari script.
- Status: Active
- Origin / Users: India
- Description: Braille adaptation for the Odia language, part of the Bharati Braille system. Used for Odia written in the Odia script.
- Status: Active
- Origin / Users: India
- Description: Braille adaptation for the Sanskrit language, part of the Bharati Braille system. Used for Sanskrit written in the Devanagari script. Important for accessing classical Indian texts and religious literature.
- Status: Active
- Origin / Users: India
- Description: Braille adaptation for the Telugu language, part of the Bharati Braille system. Used for Telugu written in the Telugu script.
- Status: Active
- Origin / Users: India
- Description: Braille adaptation for Urdu as used in India, part of the Bharati Braille system. Note: This differs from Pakistani Urdu Braille, which uses a different system. Indian Urdu Braille is adapted for Urdu written in the Devanagari script (as used in India) rather than the Perso-Arabic script.
- Status: Active
Computer Braille
Computer Braille (Computer Braille Code - CBC)
- Origin / Users: International
- Description: Designed for representing computer syntax (e.g., brackets, punctuation) in Braille
- Status: Active
- Key Features:
- Specialized cells for programming symbols
- Used in coding and technical documentation
- Essential for computer science education
8-Dot Braille (Computer Braille)
- Origin / Users: International (1970s–present)
- Description: Extended cell with two additional dots for encoding 256 characters; used for computing
- Status: Active
- Key Features:
- Extended 8-dot cell (vs. standard 6-dot)
- Can encode 256 characters
- Used in computing and technical applications
Braille Grade Systems
Grade 1 Braille (Uncontracted)
- Origin / Users: International
- Description: Letter-by-letter transcription
- Status: Active
- Key Features:
- Basic Braille system
- Each letter transcribed individually
- No contractions or abbreviations
- Used for learning and simple texts
Grade 2 Braille (Contracted)
- Origin / Users: International
- Description: There are 180 different letter contractions used in contracted braille (including 75 shortform words). These “short cuts” are used to reduce the volume of paper needed for reproducing books in braille
- Status: Active (most common)
- Key Features:
- 180 different letter contractions
- Includes 75 shortform words
- Reduces paper volume significantly
- Standard for most Braille publications
Grade 3 Braille / Personal Shorthand
- Origin / Users: Various (20th century)
- Description: Grade 3 Braille represents an advanced, highly abbreviated extension of English Braille beyond Grade 2 contractions, employing single cells or short sequences to denote entire words, phrases, or common omissions. Largely personal shorthand; now obsolete
- Status: Obsolete (personal use only)
- Key Features:
- Advanced, highly abbreviated extension beyond Grade 2
- Single cells or short sequences for entire words/phrases
- Personal abbreviation systems
- Used for speed reading/writing
- Not standardized (varies by user)
- Now largely obsolete
Accessibility Adaptations
- Origin / Users: International
- Description: Enlarged Braille cells designed for users with reduced tactile sensitivity. Jumbo Braille features larger cell dimensions, increased dot height, and greater spacing between cells compared to standard Braille. This system is a critical accessibility modality for individuals with conditions such as neuropathy, diabetes-related peripheral neuropathy, or other conditions affecting tactile discrimination. It enables continued Braille literacy for users who might otherwise lose the ability to read standard Braille.
- Status: Active
- Key Features:
- Larger cell size than standard Braille (typically 1.5x to 2x standard size)
- Increased dot height and spacing between cells
- Easier to distinguish for users with reduced tactile sensitivity
- Used in educational and personal settings
- Essential for maintaining Braille literacy in users with declining tactile function
- Can be produced using specialized embossing equipment or 3D printing
- Particularly important for elderly Braille readers and those with diabetic neuropathy
- Maintains same cell structure and dot patterns as standard Braille, just enlarged
Other Specialized Codes
Braille for Sign Languages
- Languages Supported: Various (e.g., American Sign Language Braille, British Sign Language Braille)
- Description: Represents manual signs in tactile form
- Status: Active in specific communities
- Languages Supported: Esperanto
- Description: Braille adaptation for Esperanto, the constructed international auxiliary language. Esperanto Braille extends International Braille to include the six special letters unique to Esperanto: ĉ, ĝ, ĥ, ĵ, ŝ, and ŭ. These letters are represented using specific Braille cell combinations that follow the logical patterns of Esperanto orthography.
- Status: Active in Esperanto-speaking communities
- Key Features:
- Extends International Braille for Esperanto’s special characters
- Represents ĉ, ĝ, ĥ, ĵ, ŝ, ŭ with specific Braille combinations
- Used by Esperanto-speaking blind and visually impaired communities worldwide
- Maintains consistency with International Braille conventions
- Supports Esperanto literature and educational materials
- Examples: Klingon Braille, Dothraki Braille
- Description: Custom Braille mappings created by enthusiasts for constructed languages (conlangs). These systems adapt Braille to represent the unique orthographies and character sets of fictional or constructed languages, often created by fans of science fiction, fantasy, or linguistic communities.
- Status: Community-driven
- Key Features:
- Custom mappings for constructed languages
- Created by enthusiasts and fan communities
- Examples include Klingon Braille (for the Klingon language from Star Trek)
- Often developed for accessibility in fan communities
- May include adaptations for unique character sets or writing systems
- Origin / Users: International (science and technical notation)
- Description: Specialized Braille codes for scientific and technical notation, developed to provide comprehensive coverage of scientific symbols, formulas, and technical expressions. The Gardner–Salinas system includes both 8-dot (GS8) and 6-dot (GS6) variants, allowing flexibility in implementation depending on available Braille display technology. GS8 provides more symbols due to the extended 8-dot cell, while GS6 maintains compatibility with standard 6-dot Braille displays.
- Status: Active
- Key Features:
- Used for scientific and technical notation
- Includes 8-dot variant (GS8) for extended symbol coverage
- Includes 6-dot variant (GS6) for standard Braille display compatibility
- Comprehensive coverage of scientific symbols and formulas
- Used alongside other specialized Braille codes (Nemeth, Marburg, etc.)
- Particularly useful for chemistry, physics, and engineering notation
- Named after developers Gardner and Salinas
- Origin / Users: Japan
- Description: Extended 8-dot Braille system developed for representing Kanji characters in Japanese. Standard Japanese Tenji (Braille) only handles hiragana and katakana, with no provision for the thousands of Kanji characters used in Japanese writing. Kanji Braille uses the extended 8-dot cell to provide a systematic way to represent Kanji characters in tactile form, complementing the standard Japanese Tenji system.
- Status: Active
- Key Features:
- Extended 8-dot cell system (vs. standard 6-dot)
- Used for Japanese Kanji character representation
- Complements standard Japanese Tenji (which handles hiragana/katakana only)
- Provides systematic encoding for Kanji characters
- Enables full Japanese text representation in Braille
- Used in educational and literary contexts in Japan
- Origin / Users: International
- Description: Braille representation of the International Phonetic Alphabet (IPA), the standardized system for phonetic notation used in linguistics. IPA Braille provides tactile access to phonetic transcriptions, enabling blind and visually impaired linguists, language learners, and researchers to work with phonetic notation. The system is based on French-ordered Braille and provides comprehensive coverage of IPA symbols including vowels, consonants, diacritics, and suprasegmental features.
- Status: Active
- Key Features:
- Used for phonetic transcription in Braille
- Based on French-ordered Braille conventions
- Comprehensive coverage of IPA symbols (vowels, consonants, diacritics)
- Essential for linguistic study and research
- Used in language learning and teaching
- Enables blind linguists to read and write phonetic transcriptions
- Supports academic and professional linguistic work
Religious and Sacred Text Notation
- Origin / Users: Muslim communities worldwide
- Description: Specialized Braille notation system for representing Tajweed (تجويد) marks in Quranic text. Tajweed refers to the set of rules governing pronunciation during Quran recitation. Modern Tajweed Braille follows the principle of rasm Uthmani (Uthmanic script), adding Braille codes for diacritical marks and waqf (stopping) signs. The system enables blind Muslims to not only read the Quran but also learn proper recitation rules. Organizations like the Hadi Al Khalil Foundation and Islam By Touch have produced Braille Qurans incorporating these marks. The Saudi Arabian Institute for the Blind produces a 30-volume Braille Quran in Arabic, and digital pen readers now allow simultaneous reading and listening
- Status: Active
- Key Features:
- Represents Tajweed recitation marks in Braille
- Follows rasm Uthmani (Uthmanic script) principles
- Includes diacritical marks and waqf (stopping) signs
- Enables learning of proper Quranic pronunciation
- Available in Arabic Braille since the 1980s
- Supported by Islamic organizations worldwide
- Compatible with digital pen readers for audio-tactile learning
- Origin / Users: Jewish communities worldwide
- Description: Extended Hebrew Braille notation that includes te’amim (טעמים), the cantillation marks used for chanting Torah and other biblical texts. These marks, standardized by Rabbi Aaron ben Asher (900-960 CE), indicate both musical melody and grammatical structure. Software has been developed to convert pointed, cantillated Hebrew from sources like Sefaria into BRF (Braille Ready Format) files compatible with Braille displays and embossers. This enables blind Jews to read haftorah portions with trope marks for synagogue services, particularly important for those who keep Shabbat and cannot use electronic readers. JBI International (formerly Jewish Braille Institute, founded 1931) provides Hebrew Braille materials including cantillated texts to 35,000 people worldwide
- Status: Active
- Key Features:
- Extends Hebrew Braille with cantillation marks (te’amim/trope)
- Indicates stressed syllables and phrase structure
- Provides musical notation for Torah chanting
- Software-generated from Sefaria and other digital sources
- Outputs to BRF format for Braille displays and embossers
- Essential for blind ba’alei kriah (Torah readers)
- Distributed by JBI International and other organizations