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Steven Ochmanski
Cisco Employee
Cisco Employee


Low Delay Code Excited Linear Prediction (LD-CELP)

Complete Definition

Low Delay Code Excited Linear Prediction (LD-CELP), Delay of the codec is  only 5 samples (0.625 ms). The linear prediction is calculated backwards with a  50th order LPC filter. The excitation is generated with gain scaled VQ. The  standard was finished in 1992 in the form of algorithm exact floating point  code.

LD-CELP is based on CELP

Wikipedia LD-CELP  Definition (part of G.728)

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