Microphones are transducers, which alter one form of energy into another. Remember that sound we can listen to is energy carried by vibrations in the air.

This signal can be augmented as an analog signal or might be converted to a digital signal, which can be processed by a computer or other digital audio device. When you speak, sound waves created by your voice carry energy toward the microphone. When a person speaks through a microphone, the diaphragm vibrates by the sound wave.Ī microphone is a tool that captures audio by converting sound waves into an electrical signal. There are a moving coil and a thin metallic sheet named diaphragm in the microphone. The frequency and relative amplitude of the electrical audio signal remains the same as that of the sound wave. Both microphones and speakers are found in tape-recorder, VCR, etc.įunctions: We have already said that a microphone is such a device that changes sound wave into electrical audio wave or signal. Perhaps you will have seen the use of a microphone and speaker in various ceremonies of your school. Because the speaker transforms the electric signal of the microphone into sound. The audience can hear it loudly through a loudspeaker. Microphone converts sound into an electric signal. In a big meeting or program, a speaker delivers his speech in front of an electronic device which is known as a microphone or mic. Microphone and Speaker Microphone is orally known as the mic.

Use speaker as microphone