Patent ID: 7124076
Filing Date: 2006-10-17
Classification: G10L,H03M,H04B,H04L

Abstract:
1. An encoding apparatus characterized by comprising: division means for dividing an input time-sequential signal into predetermined-length blocks; low-frequency-component-signal generation means for applying a predetermined frequency analysis to the input time-sequential signal in the blocks and for generating a low-frequency-component signal according to predetermined waveform information based on a result of the analysis; residual-signal generation means for removing the low-frequency-component signal from the input time-sequential signal in the blocks to generate a residual signal; amplitude control process means for analyzing the amplitude of the residual signal and for applying a predetermined amplitude control process to the residual signal according to predetermined amplitude control process information based on a result of the analysis to generate a signal to be quantized; quantization means for quantizing the signal to be quantized to generate a quantized signal; and code-string generation means for encoding the waveform information, the amplitude control process information, and the quantized signal to generate a code string.