Short answer, no. You can't ramp audio clips in PP, only video.
I checked out the related thread. See my reply, I don't think it's a viable solution.
Trying now with Audition.
Audition has a very convoluted pitch/stretch tool - it didn't make sense/wasn't viable for this purpose.
Jim is right AFAIK, not possible in Premiere (lame). I was trying to duplicate the ramping the iPhone 6 plus applies to its 240fps clips (when you copy the clips to your computer you lose that ramping).
After Effects is the way to go with "Enable Time Re-mapping", which also applies to the audio. Here's the output for my video Iphone 6 Plus 240fps + Image Stabilization Test - Mountain Bike Drop + Jump - YouTube.
There are tutorials on youtube for this - some of them super long and convoluted, leaving critical steps out. A shorter, good one is here After Effects Tutorial | Ramped Slow Motion - YouTube.