| 摘要 |
PROBLEM TO BE SOLVED: To reduce sound quality deterioration by foreign sound due to occurrence of unnatural cycle, even when a signal just before packet loss is the one with small periodicity such as consonants and background noise, and to interpolate packet loss for reducing the sound quality deterioration due to silence, even when the packet loss continues for a long period of time, in the interpolation method. SOLUTION: The interpolation method for interpolating the digital signal of sound which is lost in transmission, comprises: an analysis procedure for calculating the featured value of the digital signal; a pseudo sound generating procedure for generating pseudo sound according to the featured value; a pseudo noise generating procedure for generating pseudo noise according to the featured value; and an output signal generating procedure for generating the interpolation signal by combining the pseudo voice with the pseudo noise. COPYRIGHT: (C)2009,JPO&INPIT
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