For question about the Speech Assessment Methods Phonetic Alphabet (SAMPA) and its dialects (like X-SAMPA)
The Speech Assessment Methods Phonetic Alphabet (SAMPA) is an ASCII-based phonetic alphabet.
SAMPA covers a restricted subset of IPA sufficient to transcribe the major Eurpean langauges, Arabic, Hebrew, and Thai.
X-SAMPA attempts to cover the whole IPA range.