What is a filler dictionary? What is its format?
A. A filler dictionary is like any dictionary, with a word and its pronunciation listed on a line. The only difference is that the word is what *you* choose to call a non-speech event, and its pronunciation is given using whatever filler phones you have models for (or are building models for). So if you have models for the phone +BREATH+, then you can compose a filler dictionary to look like ++BREATHING++ +BREATH+ or BREATH_SOUND +BREATH+ or… The left hand entry can be anything (we usually just write the phone with two plus signs on either side – but that’s only a convention).