MULTIMEDIA AND QUALITY OF SERVICE
COMPRESSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Permanently removes data from a file
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Always leads to a noticeable loss of quality
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Aims to remove redundant data
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Can return the original file to its original quality
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Would be a sensible choice for a music download site.‘
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Detailed explanation-1: -Lossy compression is typically used when a file can afford to lose some data, and/or if storage space needs to be drastically ‘freed up’. Here, an algorithm scans image files and reduces their size by discarding information considered less important or undetectable to the human eye.
Detailed explanation-2: -Lossy audio is audio that has been compressed using a method that diminishes the audio quality. Lossless audio is audio that has been compressed but has not lost any quality in the process. Some of the most common file lossless formats include FLAC and ALAC.
Detailed explanation-3: -We recommend lossy compression for most websites since it can significantly reduce file sizes without removing any noticeable data. However, lossless compression might be better if you’re more concerned about image quality than loading times.