What energy does a microphone transfer?

Answer 1

Microphones are a type of transducer - a device which converts energy from one form to another. Microphones convert acoustical energy (sound waves) into electrical energy (the audio signal).

Different types of microphone have different ways of converting energy but they all share one thing in common: The diaphragm. This is a thin piece of material (such as paper, plastic or aluminium) which vibrates when it is struck by sound waves. In a typical hand-held mic like the one below, the diaphragm is located in the head of the microphone.Location of Microphone Diaphragm

Answer 2

The sound field delivers sound excess pressure in pascals (force per area) that is moving the diaphragm of the microphone and this sensor converts the acoustical waves into audio voltage (dB per millivolts). The idea of "energy" is not good, because even our ear drums and the microphone's diaphragms are moved only by sound pressure.

Conversion of electrical energy (sound power and sound intensity) to noise energy is used more theoretically by acousticians and noise fighters.

Scroll down to related links and look at "Sound pressure and Sound power - Effect and Cause".
A microphone converts sound energy(of our voice) into electrical energy.

The sound vibrations are converted to electrical signals that carry information to be transmitted over wired/wireless network.
The voice of the person who speaks through telephone is converted into electrical energy for transmission purpose. The electrical energy is converted into sound energy again.

Answer 3

Microphones convert acoustic energy into electrical energy: sound makes mic's membrane vibrate, the vibrations make the material (for example coal dust) placed beneath the membrane to be pressed periodically - in accordance with the sound waves received - the electrical resistance of the material changes in the same key, and so the direct current passing through the material is thus changing its amplitude. Or it may be two membranes forming a capacitor whose capacity, changing in accordance with the sound waves pressing, is then processed in an electronic processor. Or other ways.

Answer 4

Keeping it simple. Sound is a pressure wave. It compresses carbon granules between the plates of a capacitor which increases its capacitance. Capacitance is proportional to the voltage across the capacitor so changes in pressure are followed by changes in voltage. The changing signal can then be amplified.

Answer 5

Acoustic energy.

A microphone converts acoustic energy to electrical energy.

Answer 6

No, there is no energy transformation. Only the sound wave can move the diaphragm of the microphone and a voltage signal comes out. That goes to to an amplifier and to a loudspeaker.

Answer 7

Sound energy into mechanical. Then it is changed into electrical with the help of magnetism

Answer 8

Sound energy.

Answer 9

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