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.
While many DUI crimes are considered misdemeanor offenses, felony DUI charges are also possible depending on the circumstances surrounding the offense. It is also against the law to drive while under the influence of drugs, whether they are legally used (such as a prescription) or are illegal (such as marijuana).