My old ones broke two days ago and I needed new ones. I chose earbuds from NOTHIHG because according to reviews they are really good for the money. Now, their app is asking me to accept this privacy policy. Maybe this policy is just some general place holder for other products because they sell phones too. And they would have browser history there. Or I could use the earbuds without the app. But the default tuning on them is very bass heavy and I need to change that.
I use DNS resolver on my phone with a lot of filters, so this shit will get blocked. I think I will bite the bullet for now but this is probably the last thing I bought from this company.
ah yeah i got confused. it would be physically impossible for a bluetooth adapter to make headphones perform as if they have hardware that they don't have. so i thought you were referring to the $20 headphones as having ANC.
here is a great explanation of how ANC works: https://electronics.howstuffworks.com/gadgets/audio-music/noise-canceling-headphone3.htm
but tldr is that you need a microphone on each ear and good circuitry to calculate the exact noise canceling frequencies to play.