Humming sound (like an airplane engine at higher speeds)
 

So I have a 2011 Rdx turbo bought at 90k currently at 95k , as the time has passed the humming sound has gotten louder it doesn’t make it when it neutral so I don’t believe it’s an engine issue . Will post video of sound soon new to forum . Any suggestions or thoughts help first Acura I’ve owned but I truly love it wanna be able to take care of it myself if possible thank you!