A connector for connecting together two floating dock sections includes a first half having a pair of slotted cylinders and a second half with a pair of cones. The diode includes an n\u2212 type epitaxial layer disposed on a first surface of an n+ type silicon carbide substrate and having an upper surface, a lower surface, and an inclined surface that connects the upper surface and the lower surface. A plurality of local true bitlines is coupled to the array of memory cells. The second circuit has a first power supply terminal coupled the second power supply terminal of the first circuit and a second power supply terminal. Thus, the external interface provides a unified view of the simulations. The method of extracting an important frequency component of an audio signal includes converting an audio signal of a time domain into an audio signal of a frequency domain, selecting a frequency band having a harmonic feature from the converted audio signal of the frequency domain, and extracting an important frequency component from the selected frequency band having the harmonic feature.