Why there is a tiny hole in between the camera and flash on several smartphones?

Smartphones are one of the best gadgets that we have right now with us, as it’s not just a phone, but a combination of several other gadgets. In fact, recently we heard the news that a man married a smartphone in Las Vegas. Since we have it with us all the time there are some bad effects also like prolonged usage of smartphones can cause Strabismus in kids. Although, we use this smart sleek gadget every day and carry it everywhere have you ever given thought; Why there is a tiny hole in between the camera and flash on several smartphones?

You would have noticed that tiny hole on the front side of the smartphone adjacent to the front camera and on the rear side of the iPhone. Actually, this tiny hole is known as a “Noise Cancelling Microphone”. As, the name suggests it is used for noise cancellation, which is very much required. Because, you would have noticed that even when you make a call from a noisy area, the receiving end does not listen to that noise. As far as iPhone is concerned there are three microphones on an iPhone where one of them is primary and the other two are secondary microphones.

Take a look at this video, where Phil Schiller explains iPhone 5S enhanced audio system:

If, we go technically to understand the Apple iPhone’s noise-canceling circuit the primary microphone receives both ambient noise and your voice whereas the secondary mic picks up just the noise. Then it works by subtracting the signal from the secondary microphone from that of the primary and processing the voice. The end result consists primarily of your voice and has little room for noise. Thus, when you make a phone call the recipient always listens to your clear voice.

Now, you know the reason for the tiny hole in between the camera and flash on several smartphones. So, share with your friends and enhance their knowledge as well.

You may also like to read: Best Smartphones in the market – April 2016

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About the Author: Ranjit Ranjan

More than 15 years of experience in web development projects in countries such as US, UK and India. Blogger by passion and SEO expert by profession.

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