1. A method of facilitating text-to-speech conversion of a text in a first language having sections in at least one second language, the method comprising: converting the second language sections of text into phonemes of the second language; and processing similarity tests configured to perform category-to-category comparisons of respective vector representatives of phonetic categories of a set of phonemes of the second language and respective vector representatives of phonetic categories of a set of candidate mapping phonemes of the first language, the similarity tests being independent of the first and second languages.