| 摘要 |
Provided is a decoding device which suppresses generation of an abnormal sound caused by a layer switch. The decoding device includes: a first layer decoding unit (202) which performs a decoding process on first layer encoded data so as to generate a first layer decoding signal; a second layer decoding unit (203) which performs a decoding process on second layer encoded data so as to generate a first layer decoding error signal; an adder (204) which adds the first layer decoding signal and the first layer decoding error signal so as to generate a second layer decoding signal; a switching unit (205) which performs switching between the first layer signal and the second layer decoding signal for output according to layer information; and a post-filter (206) which selects a control parameter corresponding to the respective layer information and performs a control parameter smoothing process so as to generate a smoothed control parameter and performs a filter process on the decoding signal from the switching unit (205) by using the generated smoothed control parameter. |
