---
pretty_name: TTS Robustness Benchmark
task_categories:
- text-to-speech
language:
- hi
- ta
- kn
- te
- ml
- en
- od
- gu
- mr
- bn
- pa
license: other
size_categories:
- 1K<n<10K
---

# TTS Robustness Benchmark

## Overview
The **TTS Robustness Benchmark** is a set of evaluation samples used to calculate domain-wise CER (Character Error Rate) scores across 7 critical stress-test categories. This benchmark ensures that each sentence-language pair appears exactly once, providing a clean and reliable metric for TTS robustness.

- **Blog Post**: [Read the official announcement](https://www.sarvam.ai/blogs/bulbul-v3)

## Column Descriptions
| Column | Description |
| :--- | :--- |
| `text` | The original input sentence or phrase to be synthesized/evaluated. |
| `language` | The ISO-style language code (e.g., `hi`, `od`, `ta`). |
| `category` | The high-level functional domain (e.g., `Numerics`, `STEM`). |

## Language Coverage
Total Samples: **959**

| Language | Code | Sample Count |
| :--- | :--- | :--- |
| Hindi | `hi` | 103 |
| Tamil | `ta` | 97 |
| Kannada | `kn` | 94 |
| Telugu | `te` | 92 |
| Malayalam | `ml` | 85 |
| English | `en` | 84 |
| Odia | `od` | 81 |
| Gujarati | `gu` | 81 |
| Marathi | `mr` | 81 |
| Bengali | `bn` | 81 |
| Punjabi | `pa` | 80 |

## Category (Domain) Distribution (7 Core Domains)
| Domain | Description | Count |
| :--- | :--- | :--- |
| **Numerics** | Phone numbers, currency, dates, time, complex decimals. | 267 |
| **STEM** | Chemical formulas, SI units, mathematical formulas. | 245 |
| **Indian Named Entities** | Brands, medicines, people, and place names. | 215 |
| **Abbreviations** | Acronyms and technical abbreviations. | 71 |
| **Code-mixed** | Sentences blending multiple languages (e.g., Hinglish). | 70 |
| **Romanized** | Indic languages written in Latin script. | 53 |
| **URLs/Emails/Handles** | Digital identifiers and web links. | 38 |