Overview

This is a public domain speech dataset consisting of 13,100 short audio clips of a single speaker reading passages from 7 non-fiction books. A transcription is provided for each clip. Clips vary in length from 1 to 10 seconds and have a total length of approximately 24 hours.

Data Collection

Total Clips	13,100
Total Words	225,715
Total Characters	1,308,678
Total Duration	23:55:17
Mean Clip Duration	6.57 sec
Min Clip Duration	1.11 sec
Max Clip Duration	10.10 sec
Mean Words per Clip	17.23
Distinct Words	13,821

Data Format

Metadata is provided in transcripts.csv. This file consists of one record per line, delimited by the pipe character (0x7c). The fields are:

ID: this is the name of the corresponding .wav file
Transcription: words spoken by the reader (UTF-8)
Normalized Transcription: transcription with numbers, ordinals, and monetary units expanded into full words (UTF-8).

Each audio file is a single-channel 16-bit PCM WAV with a sample rate of 22050 Hz.

Citation

@misc{ljspeech17,
  author       = {Keith Ito and Linda Johnson},
  title        = {The LJ Speech Dataset},
  howpublished = {\url{https://keithito.com/LJ-Speech-Dataset/}},
  year         = 2017
}

License

Custom