ELRA - U-S0337 : LILA Marathi database

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Catalog Reference : U-S0337

LILA Marathi database

The LILA Marathi database collected in India was recorded within the scope of the LILA II project. It contains the recordings of 2,002 Marathi speakers (992 males and 1010 females) recorded over the Indian mobile telephone network.

The following acoustic conditions were selected as representative of a mobile user's environment (some speakers were recorded in several environments):
- Passenger in moving car, railway, bus, etc. (153 speakers)
- Public place (285 speakers)
- Stationary pedestrian by road side (237 speakers)
- Home/office environment (945 speakers)
- Passenger in moving car using a hands-free kit (382 speakers)

The speech files are stored as sequences of 8-bit, 8kHz A-law speech files and are not compressed, according to the specifications of LILA. Each prompt utterance is stored within a separate file and has an accompanying ASCII SAM label file.

This speech database was validated by Appen (Australia) to assess its compliance with the LILA format and content specifications.

Each speaker uttered the following items:
- 2 isolated digits
- 6 connected digits (1 sheet number -5+ digits, 2 read telephone numbers –9/11 digits, 1 credit card number –14/16 digits, 1 PIN code -6 digits, 1 spontaneous telephone number)
- 1 natural number
- 1 currency money amount
- 3 dates (1 spontaneous date e.g. birthday, 1 word style prompted date, 1 relative and general date expression)
- 2 time phrases (1 spontaneous time of day, 1 word style time phrase)
- 3 application words
- 1 spotting phrase using an embedded application word
- 5 directory assistance names (1 spontaneous, e.g. own surname, 1 city of birth/growing up, 1 most frequent city out of a set of 500, 1 most frequent company/agency out of a set of 500, 1 “forename surname” out of a set of 150 )
- 3 spelled words (1 surname, 1 directory assistance city name, 1 real/artificial name for coverage)
- 1 “silence word”
- 13 phonetically rich sentences
- Min. 6 spontaneous tasks of 10 to 15 seconds of speech

The following age distribution has been obtained: 878 speakers are between 16 and 30, 815 speakers are between 31 and 45, and 309 speakers are between 46 and 60.

A pronunciation lexicon with a phonemic transcription in SAMPA is also included.

ISLRN : 051-588-225-619-2

Production

Project : LILA II

Applications

Applications existing : Speech recognition#Voice control

Contents

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speech corpus
Language(s) : Marathi
Source Channel : Telephone
Speech Acquisition Interface : Telephone card
Transcription Entries : Orthographic