How do I use TNxBD Studio as a voice generator?

Pick a language and voice, type or paste your script, click Generate Speech, then download the MP3. Developers can also call the REST API.

TNxBD Studio — Free AI Text to Speech & Voice Generator (40+ Languages)

Model

Voice

Speed 1.00×

0.6×1.5×

Volume 1.00×

0.5×2.0×

Emotion

Script 0 characters

Output format

Recent generations

Select all Speed

No generations yet — your recent clips will appear here (saved on this device).

Developer API

POST /api/tts

Security check

Solve this to reveal the copy-ready cURL.

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Complete the security check above to view the request.

Voice settings (POST body, same as play.cartesia.ai): speed 0.6–1.5 (default 1) · volume 0.5–2.0 (default 1) · emotion neutral + 57 more (default neutral). Full effect on sonic-3 / 3.5; values are still sent on older models. Share link: ?voice_id=…&speed=0.9&volume=1.5&emotion=sad pre-fills the UI.

Request

Response

# Success → HTTP 200, audio/mpeg (binary MP3, auto-download)
# Error   → HTTP 4xx / 5xx, JSON body:
{
  "error": "TTS error 400: voice not found"
}

Selected voice details

Name

—

Gender

—

Voice ID

—

Lifelike voices

Sonic 3.5 delivers expressive, low-latency speech across languages.

Multilingual

40+ languages with curated male & female voices.

Simple API

POST JSON, get MP3. Drop it into any app or workflow.

Languages supported

Popular voices

How to turn text into speech

Pick language & voice

Choose from 40+ languages and curated male or female voices.

Type or paste text

Enter your script in the text box — supports long paragraphs.

Generate & download MP3

Get studio-quality MP3 audio and download it instantly.

Frequently asked questions

What is TNxBD Studio?

A free AI text-to-speech (TTS) studio that turns text into natural MP3 audio using Cartesia's Sonic models — no signup or API key required.

Which languages are supported?

40+ languages including Bangla, English, Hindi, Spanish, French, Arabic, Japanese, Korean, Chinese, German, Portuguese, Russian, Italian and Dutch.

Is the text to speech service free?

Yes. TNxBD Studio is completely free to use from the web UI and offers a simple JSON API for developers.

Can I download the audio as MP3?

Yes. Every generated clip can be downloaded as a high-quality MP3 file with a single click.

Do I need an API key to use the TTS API?

No API key is required. Send a JSON POST to the /api/tts endpoint with language, model, voice_id and text to receive MP3 audio.

Can I generate Bangla (Bengali) text to speech?

Yes. TNxBD Studio includes natural Bangla TTS voices. Choose Bangla from the language list, pick a voice, type Bengali text, and generate a downloadable MP3.

Is there a Hindi TTS voice generator?

Yes. Hindi TTS is supported with clear male and female voices. Select Hindi, enter your text in Devanagari, generate the audio, and download it as MP3.

How do I use the TTS API?

Send a JSON POST to /api/tts with fields language, model, voice_id and text. The endpoint returns MP3 audio and needs no API key. Example requests are shown under the API section.

Can I use a custom voice model that isn't in the list?

Yes. If you have a voice you'd like cloned, email me at mdtorikulislam5748@gmail.com with the audio file attached and I'll add it to the studio.

Developed by Torikul Islam Nayem