Speech Signal Recovery in Communication Networks

Acta Polytechnica

A. Riekstinsh¹  V. Zagursky¹ 

关键词: risk analysis;    system of reservoirs;    multi-objective optimisation;    water supply;    hydropower plant;    fuzzy logic;   

DOI  :  

来源: Czech Technical University in Prague, Faculty of M

【 摘 要 】

Interpolation approaches to the shape recovery of a speech signal in transmission over packet switched communications networks are proposed. The samples of signal fragments are mixed and transmitted in correspondence with standard procedure for packet-switched transmission. After reception a reverse permutation is made. In the case of packet losses missing samples are separated by several samples of the source signal. Correlation properties of the signal are used for the recovery samples due to first- and second-order non-adaptive and adaptive interpolation. For the loss of 25 % packets and second order adaptive interpolation a 2- 4 % error distribution range has been achieved.

【 授权许可】

Unknown