low delay, code excited linear prediction (LD-CELP)

Low Delay, Code Excited Linear Prediction (LD- CELP) is an algorithm for voice compression in lines with a transmission rate of 16 kbit/s or a compression of 4:1, described in the ITU standard G.728. The procedure is characterized by low signal delay times, which are 625 µs. The speech quality determined by the MOS value, the Mean Opinion Score (MOS), can be described as very good and is 4.1.