The SALA II Spanish from Mexico database collected in Mexico was recorded within the scope of the SALA II project. The SALA II Spanish from Mexico database contains the recordings of 1,075 Mexican speakers (539 males and 536 females) recorded over the Mexican mobile telephone network. The following acoustic conditions were selected as representative of a mobile user's environment: * Passenger in moving car, railway, bus, etc. (155 speakers) * Public place (279 speakers) * Stationary pedestrian by road side (223 speakers) * Home/office environment (364 speakers) * Passenger in moving car using a hands-free kit (54 speakers) This database is distributed as 1 DVD-ROM The speech files are stored as sequences of 8-bit, 8kHz a-law speech files and are not compressed, according to the specifications of SALA II. Each prompt utterance is stored within a separate file and has an accompanying ASCII SAM label file. This speech database was validated by SPEX (the Netherlands) to assess its compliance with the SALA II format and content specifications. Each speaker uttered the following items: * 6 application words * 1 sequence of 10 isolated digits * 4 connected digits (1 sheet number -6 digits, 1 telephone number -9/11 digits, 1 credit card number -14/16 digits, 1 PIN code -6 digits) * 3 dates (1 spontaneous date e.g. birthday, 1 word style prompted date, 1 relative and general date expression) * 2 spotting phrase using an embedded application word * 2 isolated digits * 3 spelled words (1surname, 1 directory assistance city name, 1 real/artificial name for coverage) * 1 currency money amount * 1 natural number * 5 directory assistance names (1 surname out of a set of 500, 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 ) * 2 yes/no questions (1 predominantly "yes" question, 1 predominantly "no" question) * 9 phonetically rich sentences * 2 time phrases (1 spontaneous time of day, 1word style time phrase) * 4 phonetically rich words The following age distribution has been obtained: 7 speakers are under 16, 643 speakers are between 16 and 30, 248 speakers are between 31 and 45, 169 speakers are between 46 and 60, and 8 speakers are over 60. A pronunciation lexicon with a phonemic transcription in SAMPA is also included.