The invention is an improved power transmission drive, for an internal combustion engine. The photoreceptor comprises a photosensitive layer and a resin layer wherein a resin of the resin layer comprises an organic polymer component, siloxane component and charge transportable component. Also included is an adder configured to form a sum of the L path contributions and for outputting an estimate of a received symbol, and a decision circuit configured to make a decision about a value of the received symbol based on a value of the estimate of the received symbol output by the adder. Additionally andor alternatively, in some implementations systems, methods and devices are operable to reconstruct a target voice signal by detecting formants in an audible signal, using the detected formants to select codebook tuples, and using the formant information in the selected codebook tuples to reconstruct the target voice signal.