Storing sound 0.0 / 5 ? ComputingRepresenting dataGCSEOCR Created by: Katherine_Created on: 09-11-20 17:18 How is sound recorded and what is the type of signal used? Recorded using a microphone and as an analogue signal. 1 of 8 What are analogue signals and what do they need to be converted to? Analogue signals are pieces of continually changing data. They need to be converted into digital data. 2 of 8 Why do analogue signal need to be converted to digital data? So the computers can read and store sound files. This is done by analogue to digital converters which are found in most modern recording devices. 3 of 8 What is the process of converting analogue to digital called? Sampling 4 of 8 How do you calculate the file size (in bits)? sample rate (hz) x sample resolution x length (in seconds) 5 of 8 What happens if the sample resolution is increased? The digital file picks up quieter sounds. 6 of 8 What happens if the sample rate is increased? The analogue recording is sampled more often. 7 of 8 What happens to the file size if the sampling rate and resolution is increased? It increases. 8 of 8
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