APPARATUS FOR QUANTIZING LINEAR PREDICTIVE CODING COEFFICIENTS, SOUND ENCODING APPARATUS, APPARATUS FOR DEQUANTIZING LINEAR PREDICTIVE CODING COEFFICIENTS, SOUND DECODING APPARATUS, AND ELECTRONIC DEVICE THEREFORE

摘要

A QUANTIZING APPARATUS IS PROVIDED THAT INCLUDES A QUANTIZATION PATH DETERMINER THAT DETERMINES A PATH FROM A FIRST PATH NOT USING INTER-FRAME PREDICTION (1061, 1161, 1261, 1361, 1461, 1561, 1741, 1841, 1941, 2041, 2635) AND A SECOND PATH USING THE INTER-FRAME PREDICTION, AS A QUANTIZATION PATH OF AN INPUT SIGNAL, BASED ON A CRITERION BEFORE QUANTIZATION OF THE INPUT SIGNAL; A FIRST QUANTIZER THAT QUANTIZES THE INPUT SIGNAL, IF THE FIRST PATH IS DETERMINED AS THE QUANTIZATION PATH OF THE INPUT SIGNAL; AND A SECOND QUANTIZER THAT QUANTIZES THE INPUT SIGNAL, IF THE SECOND PATH IS DETERMINED AS THE QUANTIZATION PATH OF THE INPUT SIGNAL. FIGURE 1