The present invention provides improvements to prior art audio codecs that generate a stereo-illusion through post-processing of a received mono signal. A steering angle sensor is employed for sensing an angular position c of the steering column. The contact layer has a stacked structure formed by alternately stacking a plurality of nitride semiconductor layers having a wider bandgap and a plurality of nitride semiconductor layers having a narrower bandgap. The call request includes caller data from enterprise databases or directories. The control also includes a reduced engine load at stop feature. Through engagement with the pins the masking belt is keyed to the lead frame as the lead frame passes through a plating solution tank.