com-sci - data compression 0.0 / 5 ? ComputingDatabasesGCSEEdexcel Created by: georgia300705Created on: 20-10-20 13:35 what is lossless compression it reduces the file sizes without deleting any data so nothing is lost 1 of 7 what is lossy compression it reduces the file sizes by cutting out some data 2 of 7 which type of compression is irreversible lossy compression 3 of 7 what data does lossless look for useless data 4 of 7 what data does lossy look for (in pictures) lossy looks for places where theirs only a slight difference 5 of 7 what data does lossy look for (in sounds) lossy looks for very small differences in frequency, tone, and volume are removed. 6 of 7 why is it okay to use lossy compression of sound files the human ear can't detect them 7 of 7
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