Uses of Small Holes on Phones

The small round hole you see on your phone is actually a secondary microphone, which plays a crucial role in the dual microphone system designed to reduce background noise. This is known as a noise-canceling microphone, and it’s a feature found in most modern smartphones.

Thanks to this tiny microphone, your voice calls are clearer and of higher quality. Without it, your voice might sound muffled or unclear to the person on the other end of the line.

Even in noisy environments, this secondary mic helps filter out background noise so that only your voice is transmitted clearly. Typically, the primary microphone is located at the bottom of the phone—closer to your mouth—so it captures your voice more directly, while the secondary mic (often at the top or back) picks up ambient noise to be cancelled out.

🔊 How It Works:

• Captures and analyzes ambient noise

• Filters out background sounds

• Amplifies and transmits only your voice

This process allows the person you’re talking to hear you more clearly, even in loud places like streets, cafés, or public transport.

 Dual Microphone Noise Reduction

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