Second Language Acquisition / Language Acquisition / Acoustic Phonetics / Phonological Acquisition / Language Transfer / Interphonology / Spanish Phonetics / Formant Frequencies / L2 Speech Production Processes / Cognitive Processes In L2 Speech Production / Portuguese As a Second Language / Interphonology / Spanish Phonetics / Formant Frequencies / L2 Speech Production Processes / Cognitive Processes In L2 Speech Production / Portuguese As a Second Language