vibration remember please i'm your teacher and i know you are in wiki
The musical term that describes the loudness or softness of a sound is dynamics.
intensity :)
Volume
Amplitude of a sound wave determines LOUDNESS.
Loudness of sound is measured in decibels (dB) which quantifies the intensity or volume of a sound. Softness of sound is generally perceived subjectively and does not have a standardized unit of measurement, but is often described as quiet or faint.
The loudness or softness of a sound is its amplitude, which is the measure of the maximum displacement of a vibrating material from its resting position. A larger amplitude produces a louder sound, while a smaller amplitude results in a softer sound.
Units used to measure loudness are Sone (loudness N) and Phon (loudness level L). Scroll down to related links and look at "Loudness - Wikipedia" and "Sound level change and the change of the respective factor of volume and loudness".
The word you're looking for is "volume." Volume refers to the loudness or softness of a sound.
pleasant sound? softness and low pitch unpleasant sound? loudness and low pitch
Sound has two quantitative qualities that we usually measure and those are amplitude and frequency. So I am asuming you are referring to the loudness and softness as the amplitude quantity. The louder a sound, the more energy it carries. So, a loud sound, using your descriptive terms, has more energy than a soft sound, which has less amplitutde.
sound frequency of an individual is same . loud means high pitch. soft means low pitch
The degree of loudness or softness of sound is measured in decibels (dB). A higher decibel level indicates a louder sound, and a lower decibel level indicates a softer sound. The range of comfortable hearing for most people is between 0 dB (very soft) and 85 dB (loud but not harmful).