Highline Trail junction
At the northwest end of Yoho Lake, the trail forks. You want the Highline Trail to the north (the other, to the southeast, is a strenuous trek around Wapta Mountain to Field).
This section heads through a forest of spruce and fir before you start to hear those Takakkaw Sirens again and eventually emerge to views back to the falls and the Daly Glacier above.
Even in summer, this path and the Iceline Trail it leads to can be icy in sections. It won't usually cause walkers problems in warmer months but it's worth asking about trail conditions at the Visitor Centre at other times.