Sounds are waves travelling through the air. The sounds that we hear in our everyday lives are ____ in nature; the wave is continuous. To use sounds on computerised devices they must be converted into a ____ format. An input device called a ____ captures incoming sound waves. It converts them to an electrical signal and passes them to the sound card. The sound card converts the signal into a digital file by ____. This means measuring the ____ of the wave at different times. A typical music track includes tens of thousands of samples. But the more samples, the larger the digital file becomes. The number of samples taken per second is called the sampling ____. This is measured in ____. The smallest acceptable sampling rate is twice the highest frequency in the signal.

Sound Part 1

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