Captio AI
🦻 Accessibility + 💻 Productivity App

Punjabi live captions and productivity tool for lectures

For deaf and hard of hearing people.

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Captio AI app showing live captions

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Use Cases

Every situation covered

Designed for the real moments that matter — not just quiet controlled environments.

🏛️Large lecture halls

Punjabi University Patiala, Guru Nanak Dev University, and University of the Punjab Lahore lecture halls. Punjabi-medium lectures at academic pace. Place the phone on the desk facing the speaker. Captio AI captions from any row.

🔬Seminars and tutorials

University seminars in Punjab mixing Punjabi, Urdu or Hindi, and English. Students contributing with different regional Punjabi backgrounds. Captio AI captions whoever is speaking.

💻Online and recorded lectures

Recorded Punjabi lectures on university portals or shared recordings. Put the recording on speaker and point Captio AI at the audio for accurate captions in real time.

📚Study groups

Study groups in Ludhiana, Amritsar, or Lahore — fast conversational Punjabi mixed with Hindi or Urdu. Captio AI follows whoever is speaking and handles all three languages without switching.

🌍Foreign-language and international courses

Punjabi students in English-medium programmes, or international students following Punjabi-medium courses. Live Translator captions in real time so language is not the access barrier.

🎤Guest speakers and public talks

Visiting academics from across the Punjab region — Indian Punjab, Pakistani Punjab, and diaspora Punjabi speakers from the UK and Canada. Captio AI handles both Indian and Pakistani Punjabi varieties.

Performance

Most accurate and fastest models

Punjabi
90%

word accuracy

independent benchmark, 2025

< 200ms
you speak
captions

real-time captions

first word appears as you speak

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Captio AI in everyday use
Why Captio AI

Built for the pace and pressure of a real lecture

Follow without splitting your attention

Lip-reading and note-taking at the same time is an impossible cognitive load. Captio AI handles the following so you can direct all your attention to understanding what is being said.

Captions while the lecturer is still speaking

Words appear on your screen as they are said — not after the sentence ends. You stay in sync with the lecture rather than always being a beat behind.

Works in any lecture setting

Lecture halls, seminar rooms, online classes, study groups. Place the phone on your desk, point it toward the audio source, and Captio AI handles the rest.

A full transcript to study from

Record the lecture and upload it to Audio Transcription after class. Get a complete written record you can search, annotate, and revise from — at your own pace.

60+ languages

For international students, students studying abroad, or courses taught in a second language. Captio AI captions or translates in real time with no manual setup.

No advance notice needed

Official university captioning requires booking in advance and is not available for every session. Captio AI works for any lecture, any time, with no prior arrangement.

Punjabi

Why Punjabi is hard to understand

Three-tone system

  • Punjabi has three lexical tones — level, rising, and falling — that distinguish word meaning and are entirely invisible on the lips
  • Punjabi is one of the very few Indo-Aryan languages with lexical tone. Three tones (level, rising, falling) distinguish meaning: kəl (level, yesterday/tomorrow), kəl (rising, machine), kəl (falling, throat/yesterday in some dialects). These tonal distinctions are carried by pitch and phonation — no lip or tongue movement distinguishes them. In a lecture, these tonal distinctions appear in everyday vocabulary throughout the session, and all of them are invisible.

4-way aspiration grid

  • Punjabi's four-way stop contrast — voiceless/voiced × unaspirated/aspirated — is identical on the lips in all four categories
  • Punjabi shares the South Asian four-way stop contrast: voiceless unaspirated (p, t, k), voiceless aspirated (pʰ, tʰ, kʰ), voiced unaspirated (b, d, g), and voiced breathy (bʱ, dʱ, gʱ). All four categories produce the same lip shape. In a Punjabi university lecture, every sentence contains these contrasts, and none of them are recoverable from lip-reading alone.

Retroflex series

  • Punjabi's retroflex consonants are produced inside the mouth — nothing visible on the lips to distinguish them from dentals
  • Punjabi has a full retroflex series (ਟ, ਠ, ਡ, ਢ, ਣ) distinguished from dental equivalents. The retroflex is produced by curling the tongue back — entirely inside the mouth, producing no visible lip difference from the dental series. In a Punjabi lecture, every sentence contains retroflex-dental contrasts, and all of them are invisible to a lip-reader.

Indian-Pakistani Punjabi divergence

  • Indian Punjabi (Gurmukhi) and Pakistani Punjabi (Shahmukhi) have different phonological profiles and are written in different scripts
  • Punjabi is written in Gurmukhi script in India and Shahmukhi (Nastaliq) script in Pakistan. Beyond script, the two varieties have phonological differences: Pakistani Punjabi has more Persian/Urdu loanwords with uvular and pharyngeal consonants; Indian Punjabi has more Hindi loanwords. A deaf student calibrated to one variety encounters a different lip-reading landscape with the other. Both varieties appear in Punjabi-medium lectures across the Punjab region.

Punjabi-Urdu/Hindi-English mixing

  • University lectures in Punjabi code-switch into Urdu, Hindi, or English — shifting phonological system mid-sentence
  • University lectures in Punjab (Pakistan) frequently mix Punjabi with Urdu; in Punjab (India), Punjabi mixes with Hindi. Both contexts add English for technical vocabulary. Each code-switch changes the phonological system, stress pattern, and lip profile. A deaf student must track two or three distinct systems simultaneously, with the switch occurring precisely when the technical content is most important.

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The Challenge

4.8% of Pakistan's population has hearing problems — consanguinity in Punjab drives some of the world's highest genetic deafness rates

Pakistan's Federal Minister for Health has cited that 4.8% of Pakistan's population — approximately 11 million people — has hearing problems. Punjab is Pakistan's most populous province, accounting for approximately 60% of the national population. Research has documented that consanguinity rates in Punjab are as high as 80%, and consanguinity is a primary driver of genetic hearing loss: a study published in PMC (PMC8544867) found that GJB2 gene variants account for at least 20% of all severe-to-profound hearing loss cases in the Southern Punjab population of Pakistan. Pakistan's WHO EMRO data (2023) found that 47.5% of children with hearing impairment faced moderate challenges in social participation.

For deaf and hard of hearing students in Punjab, university access is severely constrained. Pakistan has approximately 250 trained sign language interpreters for a deaf population of millions — a ratio that makes university-level interpreter provision essentially impossible at scale. A study from the WHO Eastern Mediterranean Regional Office documented significant impacts on children's schooling and family burden from hearing impairment in Pakistan. In India, the Punjabi-speaking deaf community faces the same national infrastructure gap: ISL unrecognized, interpreter provision ad hoc, and university captioning absent.

Both Pakistani and Indian Punjab share a common challenge: Punjabi-medium higher education is delivered in a language with lexical tone, four-way aspiration contrast, and retroflex series — among the most demanding combinations for lip-reading in South Asia — with no real-time captioning provision and no institutional mandate for accessibility in ordinary lectures.

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Privacy

What you hear stays with you.

Gone the moment it ends

Captio AI processes your audio in real time and discards it immediately. Nothing is recorded. Nothing is kept.

Not a product

Your conversations are not something Captio AI sells, shares, or monetizes — to anyone, for any reason.

Not used to train anything

What you say in a doctor's appointment or a job interview never ends up in a training dataset. Not ours. Not anyone else's.

100% PRIVATE

Private by default

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Reviews

People love Captio AI

"Punjabi tones are invisible on the lips. Three words that sound different look the same. Captio AI distinguishes all three acoustically. Guru Nanak Dev University lectures are accessible to me now."

Harpreet K. 🇮🇳
harpreet.k***@gmail.com
Hard of hearing, Amritsar

"UK Punjabi mixes differently from Indian Punjabi. Captio AI handles both varieties. Community college Punjabi courses and conversations with my family in Birmingham are both covered."

Mandeep S. 🇬🇧
mandeep.s***@gmail.com
Deaf, Birmingham

"University of Punjab lectures mix Punjabi and Urdu constantly. The phonological system shifts mid-sentence. Captio AI handles both accurately. I stopped guessing which language was being spoken."

Ayesha N. 🇵🇰
ayesha.n***@gmail.com
Hard of hearing, Lahore

"Canadian Punjabi Bhangra and community gatherings run fast. Captio AI captions it. I participate in cultural and academic Punjabi events fully now — Toronto and Brampton community included."

Gurpreet B. 🇨🇦
gurpreet.b***@gmail.com
Hard of hearing, Brampton

"Punjabi tones are invisible on the lips. Three words that sound different look the same. Captio AI distinguishes all three acoustically. Guru Nanak Dev University lectures are accessible to me now."

Harpreet K. 🇮🇳
harpreet.k***@gmail.com
Hard of hearing, Amritsar

"UK Punjabi mixes differently from Indian Punjabi. Captio AI handles both varieties. Community college Punjabi courses and conversations with my family in Birmingham are both covered."

Mandeep S. 🇬🇧
mandeep.s***@gmail.com
Deaf, Birmingham

"University of Punjab lectures mix Punjabi and Urdu constantly. The phonological system shifts mid-sentence. Captio AI handles both accurately. I stopped guessing which language was being spoken."

Ayesha N. 🇵🇰
ayesha.n***@gmail.com
Hard of hearing, Lahore

"Canadian Punjabi Bhangra and community gatherings run fast. Captio AI captions it. I participate in cultural and academic Punjabi events fully now — Toronto and Brampton community included."

Gurpreet B. 🇨🇦
gurpreet.b***@gmail.com
Hard of hearing, Brampton

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FAQ

Frequently asked questions

Follow every lecture in Punjabi.

Captio AI is free to start

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