expansion
  • noun the rewriting of a mathematical function as a series of terms
  • An increase in extent, size, volume, quantity, number, or scope. Also, the extent of such an increase.
  • The restoration of the space and/or bandwidth of data after compression.
  • The increase of the volume range of an audiofrequency signal, to reverse the effect of volume compression.
  • The restoration of the gain of a signal, so that so that the higher magnitude levels have a higher effective gain than the lower magnitude levels, reversing the effects of compression.
  • In communications, a circuit with more outputs than inputs.

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