detect movements of objects on iphone by blowing air

Question

hi all.

I was just finding something on web I come to know that we can provide movements to different objects by blowing air on iphone from mouth.

I tried but could not get how to do such things. so do any one know that how to move objects by blowing air from mouth.

If any one do have any idea please tell me.

If I am now wrong then, I must tell, by blowing air nothing is happening. what it's actual logit that I come to know is we are blowing on the microphone of the iPhone. That will generate some noise and using the noise frequency we can generate some actions on iPhone.

If I am wrong then please let me know.

thanks in advance.

Answer 1

Only thing I can think of is by recording sound that the phone can hear, and measuring the gain. Low gain implies a small breeze, while the higher the gain would imply more breeze. However, all this breaks down in a noisy environment.