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.
However, when a DUI is a felony, the consequences of being charged as such are more detrimental. There are various cases in which a DUI is considered to be felony crime. In certain states, the blood alcohol content that an individual has may play a role as to how the DUI is charged.