---
    language:
      - ur
      - en
    license: cc-by-4.0
    task_categories:
      - automatic-speech-recognition
    tags:
      - urdu
      - speech
      - audio
      - asr
      - tts
    size_categories:
      - 10K<n<100K
    ---

    # urdu-dacvae

    A cleaned, normalised Urdu (+ limited English) speech dataset derived from
    multiple sources, intended for ASR / TTS / VAE latent modelling.

    ## Dataset Summary

    | Field | Value |
    |---|---|
    | **Samples** | 182,472 |
    | **Total audio** | 445.1 hours |
    | **Duration filter** | 2.0s < duration < 20.0s |
    | **Unique characters** | 91 |
    | **Created** | 2026-05-19 |

    ## Sources

    - [zuhri025/munch-1-latent-NEW-parquet](https://huggingface.co/datasets/zuhri025/munch-1-latent-NEW-parquet)
- [zuhri025/IndicVoice-latent-NEW-parquet](https://huggingface.co/datasets/zuhri025/IndicVoice-latent-NEW-parquet)

    ## Text Normalisation

    All transcripts were processed with the following rules:

    ### Kept
    - **Urdu alphabet** — full Naskh character set including ں ڈ ڑ ٹ پ چ ژ گ ہ ھ ے ئ
    - **Arabic diacritics / harakat** — zabr (َ), zeer (ِ), pesh (ُ), shadda (ّ),
      sukun (ْ), tanwin variants, maddah, superscript alef (ٰ), and the full
      U+064B–U+065F block
    - **Tatweel / kashida** ـ (U+0640) — preserved for connected script rendering
    - **Urdu punctuation** — ۔ ، ؟
    - **English** A–Z / a–z and basic ASCII punctuation `. , ! ? : ; - ( ) " '`

    ### Normalised (non-canonical → canonical Urdu)
    | From | To | Reason |
    |---|---|---|
    | `ك` U+0643 | `ک` U+06A9 | Arabic kaf → Urdu kaf |
    | `ي` U+064A | `ی` U+06CC | Arabic ya → Urdu ya |
    | `ى` U+0649 | `ی` U+06CC | Alef maqsura → Urdu ya |
    | `ه` U+0647 | `ہ` U+06C1 | Arabic ha → Urdu gol-he |
    | `أ` `إ` `ٱ` | `ا` | Hamza/wasla alef variants → plain alef |
    | `ة` U+0629 | `ت` | Ta marbuta → ta |
    | `ۃ` U+06C3 | `ہ` | Small he → Urdu he |
    | `ٮ` U+066E | *(removed)* | Dotless ba — OCR artifact |
    | `٪` U+066A | `%` | Arabic percent → ASCII |
    | ZWJ / ZWNJ / LRM / RLM | *(removed)* | Invisible control characters |

    ### Filtered out (whole sample dropped)
    - Any transcript containing **digits** (ASCII 0–9, Arabic-Indic ٠–٩, Extended ۰–۹)
    - Transcripts that are **empty or fewer than 3 characters** after cleaning
    - All non-Urdu / non-English script characters (Devanagari, Hebrew, CJK, etc.)
      are replaced with a space; samples that become empty are then dropped

    ### Space normalisation
    - Multiple consecutive spaces collapsed to a single space
    - Leading / trailing whitespace stripped

    ## Top 40 Characters (post-cleaning)

    | Char | Codepoint | Unicode Name | Frequency |
    |---|---|---|---|
    | `ا` | U+0627 | ARABIC LETTER ALEF | 1,764,365 |
| `ی` | U+06CC | ARABIC LETTER FARSI YEH | 1,656,310 |
| `ک` | U+06A9 | ARABIC LETTER KEHEH | 996,578 |
| `و` | U+0648 | ARABIC LETTER WAW | 921,501 |
| `ہ` | U+06C1 | ARABIC LETTER HEH GOAL | 920,071 |
| `ر` | U+0631 | ARABIC LETTER REH | 918,130 |
| `ے` | U+06D2 | ARABIC LETTER YEH BARREE | 822,968 |
| `ن` | U+0646 | ARABIC LETTER NOON | 669,620 |
| `م` | U+0645 | ARABIC LETTER MEEM | 636,611 |
| `ت` | U+062A | ARABIC LETTER TEH | 570,236 |
| `س` | U+0633 | ARABIC LETTER SEEN | 555,358 |
| `ل` | U+0644 | ARABIC LETTER LAM | 453,513 |
| `ں` | U+06BA | ARABIC LETTER NOON GHUNNA | 427,813 |
| `ب` | U+0628 | ARABIC LETTER BEH | 405,940 |
| `د` | U+062F | ARABIC LETTER DAL | 307,807 |
| `ھ` | U+06BE | ARABIC LETTER HEH DOACHASHMEE | 307,668 |
| `پ` | U+067E | ARABIC LETTER PEH | 299,896 |
| `ج` | U+062C | ARABIC LETTER JEEM | 257,909 |
| `گ` | U+06AF | ARABIC LETTER GAF | 196,577 |
| `ٹ` | U+0679 | ARABIC LETTER TTEH | 164,488 |
| `ئ` | U+0626 | ARABIC LETTER YEH WITH HAMZA ABOVE | 147,302 |
| `چ` | U+0686 | ARABIC LETTER TCHEH | 134,419 |
| `ف` | U+0641 | ARABIC LETTER FEH | 123,204 |
| `ز` | U+0632 | ARABIC LETTER ZAIN | 119,619 |
| `ع` | U+0639 | ARABIC LETTER AIN | 109,658 |
| `ش` | U+0634 | ARABIC LETTER SHEEN | 101,565 |
| `ق` | U+0642 | ARABIC LETTER QAF | 90,511 |
| `ح` | U+062D | ARABIC LETTER HAH | 76,356 |
| `ڈ` | U+0688 | ARABIC LETTER DDAL | 72,531 |
| `آ` | U+0622 | ARABIC LETTER ALEF WITH MADDA ABOVE | 68,159 |
| `ص` | U+0635 | ARABIC LETTER SAD | 59,302 |
| `۔` | U+06D4 | ARABIC FULL STOP | 57,814 |
| `خ` | U+062E | ARABIC LETTER KHAH | 57,180 |
| `ڑ` | U+0691 | ARABIC LETTER RREH | 51,705 |
| `ط` | U+0637 | ARABIC LETTER TAH | 44,849 |
| `ض` | U+0636 | ARABIC LETTER DAD | 24,586 |
| `،` | U+060C | ARABIC COMMA | 18,665 |
| `غ` | U+063A | ARABIC LETTER GHAIN | 18,109 |
| `ظ` | U+0638 | ARABIC LETTER ZAH | 16,061 |

    ## Schema

    Each row contains the original columns from the source datasets plus the
    cleaned `text` column. Key fields:

    | Column | Type | Description |
    |---|---|---|
    | `text` | string | Normalised transcript |
    | `duration` | float | Audio duration in seconds |

    ## License

    Released under [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/).
    Derived from source datasets — please also cite those accordingly.