Key points in PM (1) a Choosing and generating speech recognition unit (SrU set , So as to well describe the phone changes and sound changes ,s Could be syllable, semi-syllable, or INITIAL/FINAL a Constructing a multi-pronunciation lexicon(MPL) s a syllable-to-sru lexicon to reflect the relation between the ammatical units and acoustic models a Acoustically modeling spontaneous speech Theoretical framework . s CD modeling confusion matrix; data-driven Center of speech Technology, Tsinghua University Slide 7Center of Speech Technology, Tsinghua University Slide 7 Key Points in PM (1) ❑ Choosing and generating speech recognition unit (SRU) set ❖ So as to well describe the phone changes and sound changes ❖ Could be syllable, semi-syllable, or INITIAL/FINAL. ❑ Constructing a multi-pronunciation lexicon (MPL) ❖ A syllable-to-SRU lexicon to reflect the relation between the grammatical units and acoustic models ❑ Acoustically modeling spontaneous speech ❖ Theoretical framework ❖ CD modeling; confusion matrix; data-driven