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What Is Digital Audio?

Digital audio is the representation of sound as numbers. Recording sound as digital audio is similar to recording sound using a tape recorder, but slightly different. Suppose you have a microphone connected to your computer system. When you make a sound (such as singing a tune, playing a musical instrument, or even simply clapping your hands), the microphone “hears” it and converts the sound to an electronic signal. The microphone then sends the signal to the sound card in your computer, which translates the signal into numbers. These numbers are called samples.

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SOUND CARD

A sound card is a device that is plugged into your computer, allowing it to understand the electronic signals of any audio device. Basically, you can think of the sound card as a translator. When an audio device (such as a microphone, electronic musical instrument, CD player, or anything else that can output an audio signal) sends out signals to your computer, the sound card takes those signals and converts them into numbers that your computer can understand.


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