compression ratio
  • noun the ratio of the size of an original uncompressed file to the size of its compressed version
  • A ratio which describes the proportion of space saved after data compression. For example, a reduction of 50% in the occupied space may be expressed a 2:1 compression ratio.
  • The ratio of the gain of a device at a reference signal level, to the gain at a given higher signal level. Usually expressed in decibels.
  • The ratio of the gain of a device at a given lower signal level, to the gain at a given higher signal level. Usually expressed in decibels.

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