HARMONICS A characteristic of energy generated by a vibration is that there will be a number of frequencies appearing up the frequency spectrum at multiples of the fundamental frequency. These are called Harmonics. The fundamental frequency is also the first harmonic.
In North Carolina, a DWI is usually a misdemeanor crime. However, if you have three or more DWI's in the past 10 years, you commit the felony offense of habitual impaired driving (Habitual DWI). Conviction of a felony Habitual DWI results in at least 12 months incarceration and a permanent license revocation.
Misdemeanor or Felony DUI Charge Can Depend on the State. Whether a DUI charge is a misdemeanor or a felony can depend on the DUI laws in the state where the case is taking place. In Massachusetts, for example, a first or second DUI in which nobody was hurt is a misdemeanor, whereas any more repeat offenses are felonies.