This article refers to:
A note on Voice Timing and the Evolution of Connected Speech. Adrian Fourcin, Jul 2010, Vol. 35, No. 2: 74–80. doi:10.3109/14015439.2010.482862
The paper referenced above contained an error. The symbols used in Equation 3 on page 75 were incorrect. The equation should have read as follows:
Σp(V)logp(V) = Σp(S)logp(S) = Σp(A)logp(A) (Eq. 3)
The Publisher would like to apologise for this error.