Untechnical - The highness or lowness of the sound.
Technical - The frequency of the note being played or sung.
Some people have Perfect (or Absolute) Pitch which is the ability to actually hear and name notes (e.g. C) rather than hearing relative intervals between notes. Also the ability to produce a particular note without a reference tone. The downside is being very sensitive to slightly out of tune instruments and music played in a different key to the norm.