Y9

4l: Explain the function of microphones and speakers as components that capture and generate sound

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KeywordDefinition
analogue signalan electronic signal where the voltage could be any value rather than just on or off
componentelectronic device that makes up part of a gadget or computer
digital signalan electronic signal made up of 0s (voltage switched off) and 1s (voltage switched on)
microphonea device which converts the changes in air pressure caused by sound into an electronic signal where the voltage changes instead
speakera device which converts an electronic signal into sound by moving the air so it vibrates at the frequency as the changes to the electronic signal's voltage
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