The present invention relates to new piperidine inhibitors of Janus kinase 3 activity, pharmaceutical compositions thereof, and methods of use thereof. A voice extension module includes a preprocessor, a speech recognition engine, and an input handler. The harmonic locked phasefrequency detector receives a reference signal and a divided signal. Pressure generating chambers are formed by etching out at least a vibration plate side of the passage forming substrate by an etching process so that the etching stop layers are exposed.