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Microphones usually have ___________

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Microphones usually have ___________

(a) Amplitude filter

(b) Noise filter

(c) Round filter

(d) Frequency filter

The question was posed to me in exam.

I'm obligated to ask this question of Communication with IOT Devices with Voice Commands topic in division Communicating with IoT Devices : Exploring Future User Interface of IOT

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Correct answer is (c) Round filter

Easy explanation: Microphones usually have a fuzzy covering or a round filter known in the industry as pop filter. They are designed to block out distortion from breath and wind.

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