Author
Home > Science > What is the Difference Between Sound and Noise?

Guilherme Mazui

•3 minutes to read

What is the Difference Between Sound and Noise?

🆚 Go to Comparative Table 🆚

Sound and noise are both forms of energy that travel as vibrations in the air or other mediums. However, there are differences between the two in terms of perception and the impact they have on our lives.

  • Sound: Sound is a general term for vibrations in the air that our ears pick up. It serves various purposes, such as communication, warning, navigation, and entertainment. Sound itself is a form of energy, and it can be generated, move from one place to another, and dissipate over distance.
  • Noise: Noise is an unwanted or unpleasant sound. It is still a form of energy, but it is classified as noise because it causes disturbance or irritation. The perception of noise can vary from person to person, and what one person considers noise, another might not necessarily perceive as such.

In summary, while both sound and noise involve vibrations and energy, the main difference between them is the perception and the impact they have on people. Sound is generally perceived as useful or pleasant, while noise is considered unwanted or disturbing. However, it is essential to note that the distinction between sound and noise can be subjective and may vary from person to person.

On this page
  • What is the Difference Between Sound and Noise?
  • Comparative Table: Sound vs Noise

    • Comparative Table: Sound vs Noise

    The difference between sound and noise can be summarized as follows:

    Feature Sound Noise
    Definition Sound is a vibration that travels through the air and can be heard by the human ear. Noise is a sound that is considered unwanted by a listener.
    Purpose Sound is typically used for communication, entertainment, or alerting purposes. Noise is often associated with unwanted disturbances or interruptions, such as traffic, machinery, or loud music.
    Measurement Sound is measured in units called Decibels (dB), which indicate the loudness and frequency characteristics of the sound. Noise is also measured in Decibels (dB), but it often takes into account the A-weighted (dBA) scale, which adjusts for the frequency characteristics of human ears.
    Examples Common sounds like speech, music, and natural environmental sounds are considered sound. Noise examples include traffic, construction, and industrial machinery.

    In summary, sound is a vibration that can be heard and serves various purposes, while noise is an unwanted sound that may cause disturbances or interruptions. Both sound and noise can be measured in decibels, with the A-weighted scale often used for noise measurement to account for human hearing characteristics.

    Read more:

    Guilherme Mazui

    Guilherme Mazui is graduated in journalism from the Federal University of Minas Gerais (UFMG) and a master's degree in Communication from the University of São Paulo (USP). In addition, he has experience in advertising writing and has worked as a content editor in several companies.