Edexcel GCSE Computer Science
3.3.2: understand the need for data compression and methods of compressing data (lossless, lossy) and that JPEG and MP3 are examples of lossy algorithms
3.3.2: understand the need for data compression and methods of compressing data (lossless, lossy) and that JPEG and MP3 are examples of lossy algorithms
| Keyword | Definition |
|---|---|
| Compression | reducing the number of bits required to store data |
| JPEG | lossy compression algorithm used to reduce the file size of images so that they're suitable for distribution online |
| Lossless | a type of compression algorithm which reduces the number of bits required to store data without losing any quality so the original data can be completely recovered |
| Lossy | a type of compression algorithm which reduces the number of bits required to store data by reducing the quality of the data itself so that it's impossible to recreate the original data |
| MP3 | lossy compression algorithm used to reduce the file size of audio recordings so that they are suitable for distribution online |
