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.
A DUI is a Class C misdemeanor. The penalties faced for a DWI are decidedly more severe. Most people face either a Class B or a Class A misdemeanor charge. The deciding factor that determines which charge is filed is whether or not it the accused had a blood alcohol level of 0.15 percent or higher.