hljóðhæðir
hljóðhæðir is an Icelandic term that translates to "sound heights" or "sound pitches." It refers to the perceived highness or lowness of a sound. This characteristic is primarily determined by the frequency of the sound wave. Higher frequencies correspond to higher pitches, while lower frequencies correspond to lower pitches.
In music, hljóðhæðir is a fundamental element, forming melodies and harmonies. Different musical instruments produce sounds
The scientific study of sound, acoustics, investigates hljóðhæðir through the measurement of frequency in Hertz (Hz).