If I figure this out, I can add an extra 6 hours to my daily listen time!
I’m interested in running Khan/TS Ultrasonic on my iPhone. I see people here talking about decibel ranges (often checked with FrequenSee) when talking about appropriate ultrasonic volume, but I’d like to know what other iPhone users have done in terms of volume settings. On an iPhone, you can change the volume in step increments using the up/down buttons. I just checked, and 16 is the highest number of steps (16 = 100% volume, 0 = 0% volume).
With that in mind, how many steps is the lowest volume that’d be appropriate if I wanted to have the phone play the ultrasonic file through its speakers while it’s next to me in bed?