An electronic circuit includes storage circuitry and a speech coder
coupled with the storage circuitry to have a codebook with sets of track
location numbers for respective pulses, the speech coder operable to
identify a group of track location numbers in the codebook substantially
equally spaced from each other by a pitch lag amount, and make a
selection from the group of track location numbers of a selected track
location number. Other electronic circuits, processes, methods, devices
and systems are disclosed and claimed.