| 摘要 |
PROBLEM TO BE SOLVED: To accelerate the processing speed of the entire optimal code book determination process. SOLUTION: The audio encoding apparatus includes: a 16-bit width codeword length table 34 which integrates two kinds of Huffman code books and stores 8 bits-defined codeword lengths; a 32-bit width codeword length table 33 which stores 16 bits-defined codeword lengths; a codeword length calculation part 18 for collectively acquiring codeword lengths for each code book from the 16-bit width codeword length table 34 when quantized values in the sub-band are equal to or less than 32; and a coding part 19 for determining a code book of a codeword length of a minimum accumulated result among the accumulated results of the codeword lengths for each code book of the sub-band unit when the accumulation of the codeword lengths for each code book regarding all the quantized values in the sub-band is completed, and encoding the quantized values in the sub-band based on the determined code book. COPYRIGHT: (C)2010,JPO&INPIT |
