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Working with Audio by Stanley R. Alten

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Chapter 9. Recording

Recording today almost always means operating in the digital domain. Therefore, it is first necessary to understand the basics of digital audio.

Digital Audio

Recording audio in the digital format uses a numerical representation of the audio signal’s actual frequency, or time component, and amplitude, or level component. The time component is called sampling; the level component is called quantization. In analog recording, the waveform of the signal processed resembles the waveform of the original sound—they are analogous.

Sampling

Sampling takes periodic samples (voltages) of the original analog signal at fixed intervals and converts them to digital data. The rate at which the fixed intervals sample the original signal each second ...

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