Shannon's Journal Discussion Thread, Vol. 5

[Shannon]

Quick one... Is it sufficient to play ultrasonic through an Android phone speaker??(I own a Xiaomi Redmi). My mind is creating doubts about getting "enough" exposure to the audio. 

I usually place the device half a meter away from me on a table, and is on the same height level. I play .FLAC format with 2-3 clicks under max volume.

Every manufacturer uses different levels of quality in their speakers, but that's why we have the speaker test and why it's free.

If it's silent or crackles at that volume, your phone's speaker will work.  If it is pure static, not so much.  My lowest end android phone crackles like a maniac at 13-14-15, with 15 being top volume, but the subliminal still works.