Between 2003 and 2006 the project E3 collected the corpus Madrid-PhonBLA (Bilingual Language Acquisition), which contains cross-sectional data from 71 Spanish-German bilingual children, aged 2 to 6, growing up in Madrid (Spain), and the PhonMAS (Monolingual Acquisition of Spanish) corpus, which contains cross-sectional data from 45 monolingual Spanish children, aged 2 to 9. The Madrid-PhonBLA corpus contains 46 hours of bilingual (Spanish and German) spontaneous speech, and the PhonMAS contains 45 hours of monolingual Spanish speech. The recordings were made in Madrid, in various preschools. The purpose of such data was to use them as a larger basis for comparison with the bilingual corpus on sound phenomena a total of 45 monolingual children (between 2 and 6 years of age). Four adults were recorded by the E3 project in Madrid, too. The audio files of PhonMAS contain 17 hours of spontaneous speech. Two of the adults' corpora in these files have been orthographically transcribed and transferred to EXMARaLDA. From the 168 available audio files (from 116 bilinguals and 52 monolinguals), 37 are provided with orthographic and phonetic transcriptions, and 34 files have been transferred to EXMARaLDA. For the phonetic transcription of those 34 files the International Phonetic Alphabet (IPA) was used. The criteria used for transcribing these files were the same as those used for the transcription of the Hamburg-PhonBLA corpus.

Lleó, Conxita. 2012. "Monolingual and Bilingual Phonoprosodic Corpora of Child German and Child Spanish." In Multilingual Corpora and Multilingual Corpus Analysis, edited by Thomas Schmidt and Kai Wörner, 14:pp. 107–22. Hamburg Studies in Multilingualism. John Benjamins.