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README
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-----------------------------------------------------------------------------
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The LJ Speech Dataset
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Version 1.0
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July 5, 2017
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https://keithito.com/LJ-Speech-Dataset
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-----------------------------------------------------------------------------
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OVERVIEW
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This is a public domain speech dataset consisting of 13,100 short audio clips
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of a single speaker reading passages from 7 non-fiction books. A transcription
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is provided for each clip. Clips vary in length from 1 to 10 seconds and have
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a total length of approximately 24 hours.
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The texts were published between 1884 and 1964, and are in the public domain.
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The audio was recorded in 2016-17 by the LibriVox project and is also in the
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public domain.
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FILE FORMAT
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Metadata is provided in metadata.csv. This file consists of one record per
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line, delimited by the pipe character (0x7c). The fields are:
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1. ID: this is the name of the corresponding .wav file
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2. Transcription: words spoken by the reader (UTF-8)
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3. Normalized Transcription: transcription with numbers, ordinals, and
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monetary units expanded into full words (UTF-8).
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Each audio file is a single-channel 16-bit PCM WAV with a sample rate of
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22050 Hz.
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STATISTICS
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Total Clips 13,100
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Total Words 225,715
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Total Characters 1,308,674
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Total Duration 23:55:17
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Mean Clip Duration 6.57 sec
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Min Clip Duration 1.11 sec
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Max Clip Duration 10.10 sec
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Mean Words per Clip 17.23
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Distinct Words 13,821
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MISCELLANEOUS
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The audio clips range in length from approximately 1 second to 10 seconds.
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They were segmented automatically based on silences in the recording. Clip
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boundaries generally align with sentence or clause boundaries, but not always.
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The text was matched to the audio manually, and a QA pass was done to ensure
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that the text accurately matched the words spoken in the audio.
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The original LibriVox recordings were distributed as 128 kbps MP3 files. As a
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result, they may contain artifacts introduced by the MP3 encoding.
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The following abbreviations appear in the text. They may be expanded as
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follows:
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Abbreviation Expansion
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--------------------------
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Mr. Mister
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Mrs. Misess (*)
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Dr. Doctor
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No. Number
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St. Saint
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Co. Company
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Jr. Junior
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Maj. Major
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Gen. General
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Drs. Doctors
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Rev. Reverend
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Lt. Lieutenant
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Hon. Honorable
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Sgt. Sergeant
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Capt. Captain
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Esq. Esquire
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Ltd. Limited
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Col. Colonel
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Ft. Fort
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* there's no standard expansion of "Mrs."
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19 of the transcriptions contain non-ASCII characters (for example, LJ016-0257
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contains "raison d'être").
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For more information or to report errors, please email kito@kito.us.
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LICENSE
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This dataset is in the public domain in the USA (and likely other countries as
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well). There are no restrictions on its use. For more information, please see:
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https://librivox.org/pages/public-domain.
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CHANGELOG
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* 1.0 (July 8, 2017):
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Initial release
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* 1.1 (Feb 19, 2018):
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Version 1.0 included 30 .wav files with no corresponding annotations in
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metadata.csv. These have been removed in version 1.1. Thanks to Rafael Valle
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for spotting this.
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CREDITS
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This dataset consists of excerpts from the following works:
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* Morris, William, et al. Arts and Crafts Essays. 1893.
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* Griffiths, Arthur. The Chronicles of Newgate, Vol. 2. 1884.
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* Roosevelt, Franklin D. The Fireside Chats of Franklin Delano Roosevelt.
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1933-42.
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* Harland, Marion. Marion Harland's Cookery for Beginners. 1893.
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* Rolt-Wheeler, Francis. The Science - History of the Universe, Vol. 5:
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Biology. 1910.
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* Banks, Edgar J. The Seven Wonders of the Ancient World. 1916.
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* President's Commission on the Assassination of President Kennedy. Report
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of the President's Commission on the Assassination of President Kennedy.
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1964.
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Recordings by Linda Johnson. Alignment and annotation by Keith Ito. All text,
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audio, and annotations are in the public domain.
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There's no requirement to cite this work, but if you'd like to do so, you can
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link to: https://keithito.com/LJ-Speech-Dataset
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or use the following:
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@misc{ljspeech17,
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author = {Keith Ito},
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title = {The LJ Speech Dataset},
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howpublished = {\url{https://keithito.com/LJ-Speech-Dataset/}},
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year = 2017
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}
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metadata.csv
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The diff for this file is too large to render.
See raw diff
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wavs.zip
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@@ -0,0 +1,3 @@
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version https://git-lfs.github.com/spec/v1
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oid sha256:6308ac6b78142ea4deb5c0e3d06d2da593942ad2b7bd5320afde121250501d23
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size 3184114031
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