17. The system of claim 16 , wherein the at least one processor is programmed to perform spelling to sound mapping including applying a predetermined set of rules to each word in a word string of a textual corpus, with pronunciations of words being obtained from the information indicating a correspondence between baseform components and word parts, wherein baseforms reflected in said information indicating a correspondence between baseform components and word parts are collected in said acoustic vocabulary.
17. The system of claim 16 , wherein the at least one processor is programmed to perform spelling to sound mapping including applying a predetermined set of rules to each word in a word string of a textual corpus, with pronunciations of words being obtained from the information indicating a correspondence between baseform components and word parts, wherein baseforms reflected in said information indicating a correspondence between baseform components and word parts are collected in said acoustic vocabulary. 18. The system of claim 17 , wherein the information indicating a correspondence between baseform components and word parts applies spelling to sound mapping to strings of components, said strings of components being obtained by filtering words of said textual corpus.