Error detection/correction and fault detection/recovery – Pulse or data error handling – Error count or rate
Reexamination Certificate
2005-07-26
2005-07-26
Lamarre, Guy J. (Department: 2133)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Error count or rate
C714S747000, C704S219000, C375S146000, C375S147000
Reexamination Certificate
active
06922797
ABSTRACT:
The error concealment method improves the signal quality in transmission systems. The method is used for processing speech signals which have been encoded to speech parameters before transmission via a transmission channel. It allows detection at the receiving end of corrupted signal parameters due to adverse channel conditions. The method comprises estimations of the signal quality and a statistic study of the evolution of the signal parameters so as to derive an indication that the parameter is probably corrupted. A first signal quality estimation is performed. It may be e.g. an estimation of the error probability within the most important bits of the frame. A second signal quality estimation is performed. It may be e.g. an estimation of the error probability within all bits of the frame. Depending on the results of the estimations, the statistic study is performed in order to detect which signal parameters are probably corrupted.
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Halajian Dicran
Koninklijke Philips Electronics , N.V.
Lamarre Guy J.
Slobod Jack D.
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