50 Examples of Loud Sounds and Weak Sounds


The sounds they are vibrations that propagate through a medium. For sound to exist, there must be some source (object or element) that generates them.

Sound does not propagate in a vacuum, but needs a physical medium: gaseous, liquid or solid, such as air or water, to propagate.

Depending on their intensity (acoustic power), sounds can be loud, for example: the blast of a cannon; or weak, for example: the hands of a clock. Loudness is the measure used to order sounds in a hierarchy from the loudest sound to the lowest.

Sounds are perceived by the human ear through the auditory apparatus that receives the sound waves and transmits the information to the brain. For the human ear to perceive a sound, it must exceed the auditory threshold (0 dB) and not reach the pain threshold (130 dB).

The audible spectrum varies from person to person and can undergo changes due to age or overexposure to very loud sounds. Above the audible spectrum are ultrasounds (frequencies above 20 kHz) and below, infrasound (frequencies below 20 Hz).

Sound characteristics

  • Height. It is determined by the frequency of the vibration of the waves, that is, the number of times a vibration is repeated in a given period of time. According to this characteristic, sounds can be classified as bass, for example: when pressing with the fingertips the strings of a double bass and treble, for example: a whistle. The frequency of sounds is measured in hertz (Hz) which is the number of vibrations per second. Not to be confused with volume.
  • Intensity or volume. Depending on their intensity, sounds can be loud or weak. It is possible to measure the intensity of a sound as a function of the wave amplitude (distance between the maximum value of the wave and the equilibrium point); the wider the wave, the greater the intensity of the sound (loud sound) and the smaller the wave, the lower the intensity of the sound (weak sound).
  • Duration. It is the period of time in which the vibrations of a sound are maintained. This will depend on the persistence of the sound wave. Depending on their duration, the sounds can be long, for example: sound of a triangle (musical instrument) or short, for example: when slamming a door.
  • Doorbell. It is the quality that allows one to differentiate one sound from another, since it provides information regarding the source that produces the sound. The timbre allows two sounds of equal height to be differentiated, this is because every frequency is accompanied by harmonics (sounds whose frequencies are whole multiples of the fundamental note). The amount and intensity of the harmonics determines the timbre. The amplitude and location of the first harmonics gives a certain timbre to each musical instrument, which allows them to be differentiated.

Examples of loud sounds

  1. An explosion
  2. The collapse of a wall
  3. The firing of a firearm
  4. The barking of a dog
  5. The engine of a car when starting
  6. The roar of a lion
  7. An airplane taking off
  8. The detonation of a bomb
  9. A hammer beating
  10. An earthquake
  11. A powered vacuum cleaner
  12. A church bell
  13. A stampede of animals
  14. A working blender
  15. Music at a party
  16. An ambulance siren
  17. A working drill
  18. A hammer breaks pavements
  19. The horn of a train
  20. A drummer
  21. The screams in a rostrum
  22. Speakers at a rock concert
  23. A motorcycle speeding up
  24. The waves of the sea crashing against the rocks
  25. A voice in a megaphone
  26. A helicopter
  27. Fireworks

Examples of weak sounds

pedaling by bicycle - mechanical energy

  1. A man walking barefoot
  2. The meow of a cat
  3. Probing a mosquito
  4. The drops falling from the tap
  5. A working air conditioner
  6. Boiling water
  7. A light switch
  8. The rattle of a snake
  9. The leaves of a tree moving
  10. The vibration of a mobile phone
  11. The song of a bird
  12. Steps of a dog
  13. An animal drinking water
  14. A fan spinning
  15. A person’s breath
  16. Fingers on the keys of a computer
  17. The pencil on the sheet
  18. The jingle of keys clashing
  19. A glass resting on a table
  20. The rain watering the plants
  21. Drumming of the fingers of the hand on a table
  22. The refrigerator door closing
  23. A beating heart
  24. A ball bouncing in the grass
  25. Flapping of a butterfly