Musical intensity

Intensity in music is the quality that differentiates a soft sound from a loud sound. It depends on the force with which the sound body is played and the distance of the receiver from the sound source. It is one of the four essential qualities of articulated sound along with pitch, duration and timbre.

Acoustically, the intensity depends on the amplitude of the vibrations and is particularly connected to a magnitude defined as acoustic intensity, which is measured in W/m² or more commonly in decibels (dB) when measured logarithmically (sound pressure level).

In psychoacoustics, the difference that measures the perception of musical intensity is defined as sonority.

Musical dynamics refers to graduations in the intensity of sound. Within musical terminology, dynamic nuance or intensity is called each of the different degrees or levels of intensity in which one or several sounds, certain passages or complete musical pieces can be interpreted.