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Hindi TTS: Devanagari or Hinglish? Writing English Words

For Hindi text to speech, write your script in Devanagari. Romanised Hindi (Hinglish typed in English letters) is less predictable, because one Latin spelling can stand for several Hindi sounds. English words that belong in the sentence, such as office or meeting, usually read best when you also write them in Devanagari the way people say them. You can hear the four voices on the Hindi text to speech page. This post is about preparing the script: use romanised Hindi for a quick test at most, and convert it before you publish.

Why romanised Hindi is less predictable

Devanagari is close to phonetic: each letter stands for a sound, so the spelling tells the voice what to say. Latin letters were not designed for Hindi, and people romanise it in different ways. That leaves the voice to guess.

Some common sources of ambiguity:

  • Vowel length. "kam" can mean कम (less) or काम (work), because many people write काम without the double a. Devanagari separates the short and long vowels: अ and आ, इ and ई, उ and ऊ.
  • Dental and retroflex consonants. Latin "d" and "t" each cover two Hindi sounds. "dal" could be दल (group), दाल (lentils) or डाल (branch).
  • Nasal vowels. "hai" and "hain" are often typed the same, but है (is) and हैं (are) are different words. The same goes for "main", which can mean मैं (I) or में (in), and also looks like the English word "main".
  • Nuqta sounds. Romanised text rarely shows whether you mean ज or ज़, or फ or फ़. In Devanagari, ख़बर and खबर are pronounced differently, and the dot tells the voice which one you want.

A careful voice follows the spelling you give it, so a precise spelling matters.

Converting a romanised script

If your script arrives in Latin letters, convert it before you generate anything you plan to publish. A Hindi phonetic keyboard or a transliteration tool gets you most of the way. After that, read through and check:

  1. Long vowels are long: काम, not कम, where you mean work.
  2. Nasal vowels have their mark: हैं, मैं, में, जाऊँगा.
  3. Nuqta letters are kept where you mean them: ज़िंदगी, ख़्वाब, फ़िक्र.
  4. English words are spelt the way they are said (see the next section).

Here is a typical chat-style line and its Devanagari version:

  • Romanised: Kal office mein meeting hai, main late ho jaunga.
  • Devanagari: कल ऑफ़िस में मीटिंग है, मैं लेट हो जाऊँगा।

In the Devanagari line, में and मैं are clearly different words, and ऑफ़िस and मीटिंग are spelt as a Hindi speaker says them.

English words inside a Hindi script

Everyday Hindi is full of English words, so most real scripts are a mix. How you write them depends on how much English there is.

Short English words: write them in Devanagari

Short English words inside a Hindi sentence usually read naturally, especially when you write them in Devanagari the way people say them. A few spellings worth knowing:

  • ऑफ़िस (office), डॉक्टर (doctor), कॉलेज (college). The ऑ sign marks the open "o" sound that English has and Hindi does not.
  • मोबाइल (mobile), वीकेंड (weekend), लैपटॉप (laptop), मीटिंग (meeting).
  • फ़ोन (phone), ज़ूम (zoom). English "f" and "z" take the nuqta, just like Urdu-origin words.

Example:

आज शाम की मीटिंग ज़ूम पर होगी, लिंक मैंने फ़ोन पर भेज दिया है।

Brand names, acronyms and product names

These are the words most likely to surprise you. You can leave them in Latin letters inside the Devanagari sentence, or spell out how they should sound. For an acronym, that means writing the letter names: एआई for AI, यूपीआई for UPI. We can't promise which version a given voice reads better, so generate a short test with each version and keep the one that sounds right.

Whole English sentences: switch voices

For a full sentence in English, such as a quote or a tagline, it is better to switch to an English voice for that line than to ask a Hindi voice to carry it. Generate the Hindi and English lines separately and join them in your editor.

How much Hinglish should the script have?

Match the audience. A news bulletin or a public-health message usually needs more formal Hindi with fewer English words, and Arjun suits that style. An ad, a reel or a YouTube vlog sounds more natural with the English words people actually use, and Kavya or Priya follow that kind of casual script well. For casual content, write the way people talk: "शुरू करते हैं" instead of "आरंभ करते हैं".

If your audience says "मोबाइल", write मोबाइल. Forcing a formal Hindi word where people use the English one makes the read sound stiff.

Numbers and punctuation in a mixed script

Write numbers out the way you want them spoken. "पंद्रह अगस्त" is safer than 15/8, and "पाँच सौ रुपये" is safer than a currency symbol with digits.

Punctuation controls pacing in either script. The danda (।) works like a full stop and gives a natural pause, and a comma gives a short breath.

Test before the full script

Generate one or two sentences, listen, adjust the spelling, and regenerate. Changing the wording or spelling usually helps more than anything else. Once a word sounds right, spell it the same way everywhere so the read stays consistent across a series.

FAQ

Can I paste romanised Hindi straight in? It can work for a quick test, but the result is less predictable than Devanagari. Convert it for anything you publish, and generate a short test and listen if you do try it.

Should English words be in Latin letters or Devanagari? For short everyday words, Devanagari spelt the way people say them (ऑफ़िस, मोबाइल) usually reads naturally. For brand names and acronyms, test both versions.

What about a sentence that is entirely in English? Use an English voice for that line and the Hindi voice for the rest.

Which Hindi voice handles a casual Hinglish script best? Kavya and Priya follow a casual script naturally. Arjun suits a more formal one. Generate a short test with your own script to be sure.

Ready to test your script? Generate your first line in the Voxmint Studio.