Tamil voice typing

Tamil voice typing for your PC, in Unicode Tamil.

Tamil voice typing on a computer usually means a detour: learning Tamil99, typing phonetically in English letters and fixing the guesses, or dictating on your phone and sending the text to yourself. VocalFlow is a free app for Windows and Mac that takes spoken Tamil and pastes Unicode Tamil text straight into the app you are working in.

Hold the key, speak, let go, and the sentence is there: in Gmail, WhatsApp Web, Word, Google Docs or a form in the browser. Speak Tanglish and it can keep it as Tanglish in Roman letters, or rewrite it fully in Tamil.

Tamil, Tanglish and 30+ languages · Windows 10/11 and macOS 13+ · Unicode output · Free · MIT licence

VocalFlow — live demo

Tamil99, phonetic typing, or voice.

Comparison

Windows already ships three ways to type Tamil. They work well once learned, and they work offline. Voice typing skips the learning, at the cost of needing a connection.

Tamil99 keyboard, phonetic Tamil input and VocalFlow voice typing compared on Windows
Tamil 99 keyboardPhonetic input (Anjal)Voice typing with VocalFlow
What it isThe layout the Tamil Nadu government approved in 1999, built into Windows as “Tamil 99”Type Tamil words in English letters and they turn into Tamil; Windows ships Tamil Anjal and Tamil PhoneticSpeak; the text is transcribed and pasted
What you learn firstA new key layoutThe spelling schemeOne hotkey
OutputUnicode TamilUnicode TamilUnicode Tamil
TanglishSwitch keyboards to type EnglishSwitch input modes to type EnglishCode-Mix Input keeps Tanglish in Roman letters; Convert to Language gives all-Tamil text
OfflineYesYesNo, Deepgram needs a connection
CostFree, built into WindowsFree, built into WindowsFree app; Deepgram bills per minute after a $200 credit

Keyboard and input method names from Microsoft’s list for Windows 10 and 11. Tamil99 approval: G.O. (Ms) No.17, Information Technology, 13 June 1999, as cited in Tamil Nadu G.O. (Ms) No.29 of 2010. · Source: Microsoft: keyboards and input methods for Windows

Tanglish in, Tamil out.

Sample dictation

Office Tamil and spoken Tamil are not the same, and most of us mix in English. Say it the way you talk, and let the conversion step write it the way a letter should read.

VocalFlow — live demo
Language: Tamil
Deepgram Nova-3 transcribes Tamil (ta). English words you use come back the way you said them.
Convert to Language: Tamil
The clean-up model rewrites every word in Tamil: மீட்டிங் becomes கூட்டம். Good for letters and notices.
Code-Mix Input: Tanglish
Keeps the mix but writes it in Roman letters, “Naalaikku meeting cancel aagivittathu.”, for chats.
Needs a clean-up key
Conversion and Tanglish run on Groq or OpenRouter with your own key. Plain Tamil transcription does not.

Tamil among India’s four big southern languages.

Census of India

In the 2011 census, 6.9 crore people in India named Tamil as their mother tongue, 5.70% of the population, before counting Tamil speakers in Sri Lanka, Singapore, Malaysia and beyond.

Mother-tongue speakers of the four scheduled Dravidian languages in India, 2011 census, in crore
Telugu
8.11 crore
Tamil
6.90 crore
Kannada
4.37 crore
Malayalam
3.48 crore

Persons who returned each language as their mother tongue, India only. The census places these four scheduled languages in the Dravidian family. Tamil: 6,90,26,881 people. · Source: Census of India 2011, Language (C-16)

Tamil voice typing on Windows, step by step.

Setup
  1. 01

    Download and run the .exe

    It is self-contained, so nothing else needs installing. Windows may warn about an unsigned app the first time: click More info, then Run anyway.

  2. 02

    Open Settings from the tray

    VocalFlow sits in the system tray as a microphone icon. Double-click it, or right-click and choose Settings.

  3. 03

    Paste in a Deepgram key

    Sign up at deepgram.com (new accounts get $200 of credit), copy an API key, paste it and click Save & Verify.

  4. 04

    Choose Nova-3 and Tamil

    Set the model to Nova-3 and the language to Tamil (ta). Deepgram lists Tamil for Nova-3, not for the older Nova-2.

  5. 05

    Hold Right Alt and speak

    Click into any text box, hold the key, speak in Tamil, and let go. On a Mac the same steps run from the menu bar, with Right Option as the key.

Before you start on a Windows PC.

Checklist
01Windows10 or 11, 64-bit
02MicrophoneAllow microphone access in Windows privacy settings. The tray menu has a Microphone Privacy shortcut
03HotkeyRight Alt by default. If your keyboard uses Right Alt as AltGr, choose Right Ctrl or Left Alt
04Cancel a takePress Esc while recording and nothing is typed
05API keysStored encrypted with Windows DPAPI, on your PC only
06UpdatesThe app updates itself from GitHub releases

Tamil voice to text, where you already write.

Use cases

VocalFlow pastes into whichever app has your cursor, so the list is really any app where you can paste.

  1. 01Office

    Letters in Word

    Office letters, circulars and applications in formal Tamil, using Convert to Language.

  2. 02School

    Worksheets and notes

    Teachers drafting question papers and class notes without hunting for letters on Tamil99.

  3. 03Chat

    WhatsApp Web

    Family group messages in Tamil script, or in Tanglish if that is how the group writes.

  4. 04Email

    Email to family abroad

    Longer emails in Gmail or Outlook to relatives in Singapore, Malaysia, Sri Lanka or the Gulf.

  5. 05Writing

    Stories and poems

    First drafts spoken aloud, then edited on the keyboard you already know.

  6. 06Forms

    Forms in the browser

    Name, address and remarks fields on Tamil-language portals.

Questions buyers ask first.

FAQ

Say it in Tamil. Paste it in Tamil.

Download VocalFlow for Windows or Mac, paste in a Deepgram key, set the language to Tamil and hold Right Alt. The app is free, and Deepgram gives new accounts $200 of credit to start.

Free · Windows and Mac · Tamil and Tanglish · Unicode output

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