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Getting hard time Understanding VAD algorithm from TI white paper

i am trying to implement simple VAD algorithm based on this white paper provided by TI. 

http://www.ti.com/lit/wp/spraal1/spraal1.pdf 

in section 2.2.2  Figure 3 is given , i think other than having few typo errors. i feel there is something wrong with flow chart , it does not match with description.

Can somebody please take look and help me understanding it.  Can somebody please confirm if Flowchart is okey?