| 摘要 |
PROBLEM TO BE SOLVED: To perform fading processing when an audio signal is encoded so that noise such as a click sound is not generated. SOLUTION: When a quantization and encoding part 13 quantizes an audio spectrum signal outputted from a time-frequency conversion part 11 by using an auditory parameter SMR(Signal-to-Mask ratio) outputted from an auditory model part 12 and outputs the quantized signal, the quantization and encoding part 13 quantizes the audio spectrum signal by using a 1st variable for controlling the encoding quantity of the quantized signal and a 2nd variable for controlling the quantization distortion of the quantized signal and then vary the 1st variable with a parameter fp for fading. |
