Method for filling opening son (sub) tape using encoding index as well as method for generating encoding index
A technology of coding index and filling method, which is applied in the field of blank subband filling to reduce adverse effects and improve sound quality
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[0023] The present invention provides a method for filling vacant subbands realized by using coding indexes, comprising the following steps:
[0024] Step 1, receiving the coded code stream, obtaining the core layer coding index, the first enhancement layer coding index and the second enhancement layer coding index in the coded code stream;
[0025] Step 2, determining the first enhancement layer decoding information according to the first enhancement layer coding index, and determining the second enhancement layer decoding information according to the second enhancement layer coding index;
[0026] Step 3, according to the decoding information of the first enhancement layer and the decoding information of the second enhancement layer, the unquantized subbands are filled and post-smoothed, including the following two steps,
[0027] Step 3.1, preliminarily filling high-frequency components that cannot be decoded by the second enhancement layer according to the decoding informa...
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