Do You Know, Why There Is A Tiny Hole In Between The Camera And Flash on Many Phones?

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Do You Know, Why There Is A Tiny Hole In Between The Camera And Flash on Many Phones?

 

Have you ever noticed a tiny hole on the backside of the iPhone i.e in between the flash light source and the camera? Do you know,what purpose does this tiny hole serves?

Do You Know, Why There Is A Tiny Hole In Between The Camera And Flash on Many Phones?

This tiny hole is generally on the rear side of the iPhone. But for some phones it is on the front side,adjacent to the front camera. This tiny hole is known as “Noise Cancelling Microphone“. Let us know in detail about this microphone.

You may call from your iPhone when you are in a fully noisy area. But the receiving end doesn’t listen to any noise. This is because of the special audio system present in your iPhone. This is known “Noice Cancellation System”. Here are the details about this system. There are three microphones on an iPhone. One primary microphone and two secondary microphones.

Noise-Canceling Circuit

The iPhone’s noise-canceling circuit works by subtracting the signal from the secondary microphone from that of the primary. The primary microphone receives both ambient noise and your voice; the secondary mic picks up just the noise. After processing, the resulting signal consists primarily of your voice and has little room noise. When you make a phone call, the person at the other end of the conversation hears your voice clearly, as the iPhone removes distracting background noises.

Isn’t it amazing? Now, you can astonish all your friends by being the first to show them this super beneficial iPhone audio system technology.

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