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STT Training Data

This dataset is prepared for Speech-to-Text (STT) training. It contains audio files from different departments, each annotated with their transcription. The dataset is split by department and includes the duration of audio data per department.

Dataset Overview

  • Total Audio Files: 1,391,020
  • Total Audio Length: 1,576.76 hours
  • Total Audio collected data: 18 OCT, 2024

Department-wise Statistics

Department Number of Audio Files Total Audio Length (hours)
STT_AB 174,525 224.92
STT_CS 150,310 219.51
STT_HS 87,088 96.27
STT_MV 112,756 193.27
STT_NS 241,007 318.28
STT_NW 97,145 137.82
STT_PC 73,894 78.90
STT_TT 454,295 307.78

Total Audio Length by Department

The total audio length of each department in hours:

  • STT_AB: 224.92 hours
  • STT_CS: 219.51 hours
  • STT_HS: 96.27 hours
  • STT_MV: 193.27 hours
  • STT_NS: 318.28 hours
  • STT_NW: 137.82 hours
  • STT_PC: 78.90 hours
  • STT_TT: 307.78 hours

Total Audio Length

The combined audio length across all departments is 1,576.76 hours.

Transcription Quality Grades:

Grade Description
1 Transcribed only
2 Reviewed by the team lead
3 Reviewed by the quality control team

Departments and Metadata

Here is the structured table format for the metadata descriptions:

STT_Training Metadata

Column Description
file_name Structured name of the audio file, including department, project ID, segment ID, and time range.
uni Tibetan transcript in Unicode.
wylie Wylie transliteration of the Tibetan text.
url URL link to the corresponding audio file.
dept Department identifier (e.g., STT_NS).
grade Quality grade of the transcription.
char_len Character length of the transcript.
audio_len Duration of the audio file in seconds.

STT_NS (Natural Speech) Metadata

Column Description
Original ID Unique identifier of the source, if available.
Speaker ID Identifier for the speaker; multiple speakers are listed as a group.
Mic/Phone Type of recording device used (e.g., microphone, phone).
Location Geographical location of the speaker.
Topic Subject matter of the audio.
A Short Scenario Brief summary of the recording.
Speaker Name Name of the speaker.
Email ID Email address of the speaker.
Gender Gender of the speaker.
Home Address Speaker's home address.
Contact No Contact number of the speaker.
Age Age of the speaker.
Course Associated course, if relevant.
Year Year of the recording.
Nationality Nationality of the speaker.
Birth Place Speaker's birthplace.
Date of Birth Date of birth of the speaker.
Native Language First language of the speaker.
College Associated institution of the speaker.

STT_AB (Audio Book) Metadata

Column Description
Original ID Unique identifier of the source, if available.
Collection Collection or set to which the audio belongs.
Book Title Title of the recorded book or text.
Category Classification of the recording (e.g., text).
Recorder Identifier of the person who recorded the audio.
Music Indicates if background music is present (True/False).
Name Speaker's name.
Gender Gender of the speaker.
Age Age of the speaker.
Place Recording location.
Livelihood Speaker's profession or occupation.
Birth Place Birthplace of the speaker.
Social/Marital Status Speaker’s social or marital status.
Education Level Educational background of the speaker.

STT_NW (News) Metadata

Column Description
Name of News Title of the news segment.
Publishing Year Year the news was published.
Media Organization Media outlet responsible (e.g., TibetTV, VOA Tibetan).
Audio Quality Quality rating of the audio.
Single Speaker Indicates if a single speaker is present (True/False).
Country Country of the news production.
Original ID Unique identifier of the original source, if available.

STT_HS (Historical Speech) Metadata

Column Description
file_name Structured name of the audio file, including department, project ID, segment ID, and time range.
uni Tibetan transcript in Unicode format, preserving the original speech content.
wylie Wylie transliteration of the Tibetan transcript, providing a phonetic representation.
url Direct URL link to the corresponding audio file stored on a cloud server.
dept Department identifier, specifically for Historical Speech recordings (STT_HS).
grade Quality grade of the transcription, indicating the level of review and quality assurance.
char_len The character length of the transcript, representing the size of the text content.
audio_len Duration of the audio file in seconds, indicating the length of the speech segment.
Publishing Year Year the speech was recorded or published, providing historical context to the content.
Name Name of the speaker, often with an alias to protect privacy.
Gender Gender of the speaker, typically categorized as Male or Female.
Age Group Age range of the speaker at the time of recording, categorized into groups.
Place of Origin Region or cultural area the speaker originates from, such as Kham or Utsang.
Exiled Year Year when the speaker went into exile, providing context to their personal history.
Original ID Unique identifier for the source or original collection of the recording.

STT_CS Children Speech Metadata

Column Description
Microphone_Type Type of microphone used for recording, if available.
Recording_Type The type of recording (e.g., classroom, outdoor, etc.).
Speakers ID Unique identifier for the child speaker.
Birth Year Year of birth of the child speaker, providing demographic context.
Gender Gender of the child speaker, typically categorized as Male or Female.
CITY City of residence of the child speaker, indicating their geographical background.
TOWN Town of residence, if applicable, providing more specific location details.
school Identifier for the school attended by the child, if available.
school name Name of the school or educational institution attended by the child.
Birth Place Birthplace of the child speaker, indicating their origin.
spoken tongue Primary language spoken by the child, providing context for their linguistic background.
Original ID Unique identifier for the source or original collection of the recording.
CLASS Academic class or grade level of the child at the time of the recording.

STT_MV Movie Speech Metadata

Column Description
Name of the movie Title of the movie from which the dialogue is extracted.
Subtitle Subtitle information for the dialogue, if available (e.g., "Chinese").
Original ID Unique identifier for the source or original collection of the recording.

STT_PC Podcast Speech Metadata

Column Description
Name of podcast Title of the podcast episode, highlighting the main topic discussed.
Publishing year Year the podcast episode was published, providing context to the content.
Channel Name of the channel or platform where the podcast is broadcasted (e.g., "Tibetan Libr").
Audio Quality Rating of the audio quality, indicating clarity and production standards (e.g., "Good").
Country Country of origin or production for the podcast episode (e.g., "India").
Gender Gender of the speaker in the podcast episode (e.g., "Male").
Age Group Age range of the speaker at the time of recording (e.g., "60-70").
Original ID Unique identifier for the source or original collection of the recording.

STT_TT Tibetan Teaching Talk Metadata

Column Description
Teacher Name of the teacher delivering the talk, often with an alias to protect privacy.
Topic Subject matter discussed in the talk, providing context to the content.
books Associated books or materials referenced in the talk, if applicable.
Episode Episode number or identifier for the talk series.
Original ID Unique identifier for the source or original collection of the recording.