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Encoding device and method, decoding device and method, and program

  • US 9,875,746 B2
  • Filed: 09/05/2014
  • Issued: 01/23/2018
  • Est. Priority Date: 09/19/2013
  • Status: Active Grant
First Claim
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1. An encoding device, comprising:

  • a gain calculator that calculates a first gain value and a second gain value for volume level correction of each frame of a sound signal, wherein the gain calculator calculates the second gain value for a downmix signal of a number of different channels obtained by downmixing of the sound signal; and

    a gain encoder that obtains a first differential value between the first gain value and the second gain value, or obtains a second differential value between the first gain value of a current frame and the first gain value of an adjacent frame or between the first differential value and the first differential value of the adjacent frame, and encodes information based on the first differential value or the second differential value.

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