For respective sampling data of waveform data of sounds to be coded, a prediction residual value is calculated as sampling residual data, and an effective bit length is calculated from this residual waveform data. Each of the taps receives as input via the mapper output from a different one of the stages of the trellis decoder. The system also has a base member with a body sized to fit and releasably couple to each of the plurality of adapter members. Various rules may control when the ephemeris data is updated. At least one electrically conductive tissue sealing plate is disposed on each of the wheel assembly and the jaw member and is adapted to connect to an electrosurgical energy source configured to deliver electrosurgical energy to tissue held between the wheel assembly and the jaw member to effect a tissue seal.