Fluorochemical urethane compounds and coating compositions derived therefrom are described. In one such example circuit, an interleaved parity computation circuit includes a first parity circuit that receives a first set of bits and a second parity circuit that receives a second set of bits. For each media stream, the media stream information can include an IP address and a data port. A design selected by the owner is applied, in reverse, to the interior surface of the diaphragm. The encoderdecoder buffers are utilized in frame based scale where an entire block of samples is read or written for encoding or decoding.