Receiver for receiving a linear predictive coded speech signal

A receiver for use in decoding a received encoded speech signal, the received encoded speech signal encoded using coded excitation linear prediction, the receiver comprising:

• means for receiving the encoded speech signals, the encoded speech signal comprising a code index, a pitch lag index and a line spectral pair index;
• means for producing an innovation sequence by selecting a code from each of a plurality of codebooks based on the code index and combining the selected codes as the innovation sequence;
• means for determining a line spectral pair quantization of a speech signal using the line spectral pair index;
• means for determining a pitch lag of the speech signal using the pitch lag index;
• means for reconstructing a speech signal using the produced innovation sequence, the determined line spectral pair quantization and pitch lag.