VSELP - Computer Definition
A proprietary voice encoding standard developed by Motorola for digital cellular radio communications in the United States.VSELP is a type of code excited linear predictive (CELP) coding algorithm that typically encodes voice at an average rate of 7.95 kbps and adds overhead of 5.05 kbps for error control and synchronization for a total rate of 13 kbps, that actually can burst up to 48 kbps. Other versions of VSELP support voice at rates as low as 4.8 kbps. CELP uses a stochastically overlapped codebook, with each entry sharing all but two samples with its neighboring entries.VSELP offers the advantage of a codebook structure that allows a more efficient search procedure by using the sum of two basis vectors, although the computational complexity is greater.VSELP is specified in IS-54 and IS-136, better known as D-AMPS, in the pan-European GSM standard, and the Japanese PDC standard. See also cellular radio, CELP, D-AMPS, digital, encode, GSM, and PDC.