Title :
A new sample-interpolation method for recovering missing speech samples in packet voice communications
Author :
Yuito, Mitsuhiro ; Matsuo, Naoki
Author_Institution :
Telecommun. Networks Lab., NTT, Yokosuka, Japan
Abstract :
A sample-interpolation method based on pattern matching is proposed to reduce speech quality degradation caused by packet losses. This method is used together with packet interleaving, which simplifies the recovery of missing packets to the recovery of missing sample values. The interpolation method is evaluated by an opinion test. The results show that speech quality is satisfactory up to a packet loss rate of 5% when packets are discarded randomly. It is satisfactory up to a packet loss rate of 10% when packet discarding is controlled to prevent consecutive packet losses
Keywords :
interpolation; packet switching; speech analysis and processing; voice communication; missing speech packets recovery; opinion test; packet interleaving; packet loss rate; packet voice communications; pattern matching; sample-interpolation method; speech quality degradation; Degradation; Intelligent networks; Interleaved codes; Interpolation; Laboratories; Pattern matching; Position measurement; Sampling methods; Speech; Testing;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1989. ICASSP-89., 1989 International Conference on
Conference_Location :
Glasgow
DOI :
10.1109/ICASSP.1989.266445
