1. A computer system for converting a hyper text markup language (HTML) document into audio signals comprising: an HTML parser receiving data of an HTML formatted document for parsing out content text, HTML text tags that structure said content text and control rules used only for translating said received data into sound, an HTML to speech (HTS) control parser for parsing out of said control rules for converting said received data into sound, said HTS control parser modifying entries in one or more of a tag mapping table, an audio data table, a parameter set table, an enunciation modification table and a terminology translation table depending on each of said parsed control rules, a text normalizer for modifying enunciation of each text string of said content text for which said enunciation modification table has an entry, according to an enunciation modification indicated in said respective enunciation table entry, and for translating each text string of said content text for which said terminology translation table has an entry, according to a translation indicated in said respective terminology translation table entry, a tag converter for modifying an intonation and a speed of audio generated from said content text encapsulated by, and for inserting audio data at, each text tag for which said tag mapping table has an entry, as specified in corresponding entries of said parameter set table and said audio data table pointed to by pointers in entries of said tag mapping table indexed by each of said text tags, respectively, and a text to speech converter for converting said content text, as modified, translated and appended by said text normalizer and said tag converter, to speech audio.