S0071 : Swedish SpeechDat(II) MDB-1000

The Swedish SpeechDat(II) MDB-1000 database contains the recordings of 1,000 Swedish speakers recorded over the Swedish mobile telephone network. This database is partitioned into 5 CDs, which comprise 200 speakers sessions each.

This speech database was validated by SPEX (the Netherlands) to assess its compliance with the SpeechDat format and content specifications.

Speech samples are stored as sequences of 8-bit 8 kHz A-law. Each prompted utterance is stored in a separate file. Each signal file is accompanied by an ASCII SAM label file which contains the relevant descriptive information.

Each speaker uttered the following items:

• 2 isolated single digits
• 1 sequence of 10 isolated digits
• 4 connected digits (1 sheet number -5 digits, 1 telephone number –9/11 digits, 1 credit card number -16 digits, 1 PIN code -6 digits)
• 1 currency money amount
• 1 natural number
• 3 dates (1 spontaneous e.g. birthday, 1 prompted date, 1 relative or general date expression)
• 2 time phrases (time of recording, 1 time phrase)
• 3 spelled words (1 spontaneous e.g. own forename, 1 city name, 1 real word for coverage)
• 5 directory assistance names (1 spontaneous e.g. own forename, 1 city of school at 7 years, 1 frequent city name, 1 frequent company name, 1 common forename and surname)
• 2 yes/no questions (1 predominantly "yes" question, 1 predominantly "no" question)
• 6 application words
• 1 keyword phrase using an embedded application word
• 4 phonetically rich words
• 9 phonetically rich sentences

The database also contains additional Swedish specific material for speaker verification purposes and dialectal studies:

• 2 sentences for speaker verification purposes, same for all speakers
• 4 connected digits strings (3-6 digits) for speaker verification purposes
• 2 sentences for dialectal studies, same for all speakers

The following age distribution has been obtained: 32 speakers are under 16, 348 speakers are between 16 and 30, 253 speakers are between 31 and 45, 292 speakers are between 46 and 60, and 75 speakers are over 60.

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