11-752: week 3 exercises hints

1. Variable poslex_rules_hooks is list of functions run on utterance after lexical lookup

   (define (postlex_thethee utt)
      (mapcar
        (lambda (seg)
          (if  word is "the", 
               this is last segment (i.e. no next segment in syllable)
               and the next segment (in the next word) is a vowel
              change vowel in segment)
        )
        (utt.relation.items utt 'Segment)))
   
   (set! postlex_rules_hooks (cons postlex_thethee postlex_rules_hooks))
   

   Features are:

   R:SylStructure.parent.parent.name
   R:SylStructure.n.name
   n.name
   

   Test is with

   (set! utt1 (SayText "The oval table."))
   (set! utt2 (SayText "The round table."))
   (utt.features utt1 'Segment '(name))
   

2. They say telling a joke is in the timing.
   • Use different speakers, breaks, etc to get the joke over.
   • A sample joke is in http://www.cs.cmu.edu/~awb/11752/joke.txt but feel free to use your own joke.
   • A useful audio clip is in http://www.cs.cmu.edu/~awb/11752/laughter.au