The present invention discloses a blends of an aromatic polyimide polymer and a polymer containing aromatic sulfonic acid groups that can be converted into polybenzoxazole membranes for gas, vapor, and liquid separations. The filter system comprises a filter support hub defined by a solid circumferential wall. The server may be connected to either a wired or wireless local area network. The speech analyzer configured to extract paralinguistic characteristics from the speech signal. The information objects and the connection objects are derived from a small set of basic building blocks.