[Yalu K]

In figure 8.10 in 8.3.4, I noticed that the positions of two labels H* and L* for pitch accent are different within the word “marianna”, and their positions seem to be on very specific points in the waveform. Does this imply that ToBI assign the pitch accent labels to phones instead of words? If so, by depending on what criteria does the model make its choices on phones?

Another question is about accent ratio model in 8.3.2. I am a bit confused about the condition for k/N. Why does the B(k,N,0.5) need to ≤0.05? And why does the model use 0.5 to differentiate accent ratio?

Thank your!

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