Lesson
Lesson-1.1.13- Understand the purpose of and need for data compression. Compression exists to reduce the size of the file ??? The impact of this is, e.g.: ??? less bandwidth required ??? less storage space required ??? shorter transmission time.
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Lesson-1.1.12- Calculate the file size of an image file and a sound file, using information given.PreviousLesson-1.1.14- Understand how files are compressed using lossy and lossless compression methods. ??? Lossless compression reduces the file size without permanent loss of data, e.g. run length encoding (RLE) ??? Lossy compression reduces the file size by permanently removing data, e.g. reducing resolution or colour depth, reducing sample rate or resolution.Next