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  2. Sound - Wikipedia

    en.wikipedia.org/wiki/Sound

    Sound waves may be viewed using parabolic mirrors and objects that produce sound. [ 9 ] The energy carried by an oscillating sound wave converts back and forth between the potential energy of the extra compression (in case of longitudinal waves) or lateral displacement strain (in case of transverse waves) of the matter, and the kinetic energy ...

  3. Natural sounds - Wikipedia

    en.wikipedia.org/wiki/Natural_sounds

    The historical background of natural sounds as they have come to be defined, begins with the recording of a single bird, by Ludwig Koch, as early as 1889.Koch's efforts in the late 19th and early 20th centuries set the stage for the universal audio capture model of single-species—primarily birds at the outset—that subsumed all others during the first half of the 20th century and well into ...

  4. Sound energy - Wikipedia

    en.wikipedia.org/wiki/Sound_energy

    In physics, sound energy is a form of energy that can be heard by living things. Only those waves that have a frequency of 16 Hz to 20 kHz are audible to humans. However, this range is an average and will slightly change from individual to individual.

  5. List of animal sounds - Wikipedia

    en.wikipedia.org/wiki/List_of_animal_sounds

    Tiger growl Jaguar making a content "sawing" sound. Camel: grunt Capybara: squeak, [8] chatter, bark Cat: mew, meow, purr, hiss, trill, caterwaul, growl Cat meow Domestic cat purring: Cattle: moo, low Chicken: cluck, buck, crow [9] cha-caw, bah-gawk (female) [10] cock-a-doodle-doo (male) Rooster crowing: Chinchilla: squeak [11] Cicada: chirp ...

  6. List of onomatopoeias - Wikipedia

    en.wikipedia.org/wiki/List_of_onomatopoeias

    This is an accepted version of this page This is the latest accepted revision, reviewed on 14 January 2025. This is a list of onomatopoeias, i.e. words that imitate, resemble, or suggest the source of the sound that they describe. For more information, see the linked articles. Human vocal sounds Achoo, Atishoo, the sound of a sneeze Ahem, a sound made to clear the throat or to draw attention ...

  7. If a tree falls in a forest and no one is around to hear it ...

    en.wikipedia.org/wiki/If_a_tree_falls_in_a_forest...

    The definition of sound, simplified, is a hearable noise. The tree will make a sound, even if nobody heard it, simply because it could have been heard. The answer to this question depends on the definition of sound. We can define sound as our perception of air vibrations. Therefore, sound does not exist if we do not hear it.

  8. Human voice - Wikipedia

    en.wikipedia.org/wiki/Human_voice

    (Other sound production mechanisms produced from the same general area of the body involve the production of unvoiced consonants, clicks, whistling and whispering.) Generally speaking, the mechanism for generating the human voice can be subdivided into three parts; the lungs, the vocal folds within the larynx (voice box), and the articulators.

  9. Physics of whistles - Wikipedia

    en.wikipedia.org/wiki/Physics_of_whistles

    Through use of a high-speed camera one can see that the leaf moves away from the lips when the player blows, and its elasticity brings it back onto the lip this oscillating movement sets it in vibration to produce a sound. An analysis of the overtone series comparing an oboe and birkenblatt playing the note F2 shows they are nearly identical. [21]