Smartphone Microphone: When you buy a smartphone, you pay attention to the camera, battery and processor, but have you ever wondered why there are two or sometimes three microphones instead of one in your phone? Most people feel that only one microphone is enough, but in reality the answer is very interesting and technical.
so why two microphones?
When you call or record the voice, then not only your voice, the surrounding noise is also captured. If there is only one microphone in the phone, then it catches the noise and your voice together, so that the other side does not hear your point clearly. The same thing comes to another microphone, which is to catch the noise in the phone. Then the processor of the phone makes a difference between noise and your voice and only cleaning your voice and sends it forward. This is called Noise Cancellation Technology.
where are these microphones?
Usually a microphone is at the bottom of the phone where you speak. The second microphone is installed upwards or near the camera so that it can capture the background noise. Some premium smartphones contain three microphones, which not only gives the best sound quality in calls, but also 3D audio effects in video recording.