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  2. Hypersonic effect - Wikipedia

    en.wikipedia.org/wiki/Hypersonic_effect

    The 2006 study also investigated the comfortable listening level (CLL) of music with and without HFCs, an alternative way of measuring subject response to the sound. The CLL for the music with HFCs was higher than that for the music without HFCs - this provides a quantitative way to demonstrate general listener preference for the music with ...

  3. Ultrasonic vocalization - Wikipedia

    en.wikipedia.org/wiki/Ultrasonic_Vocalization

    The ultrasonic vocalizations emitted by rats and mice have been categorized. There are three classifications: 22-kHz vocalizations, 40-kHz vocalizations, and 50-kHz vocalizations. [ 1 ] The 40-kHz calls are short in duration, lasting anywhere from 80-150 milliseconds, while the 50-kHz calls tend to be even shorter, lasting anywhere from 20-100 ...

  4. List of animal sounds - Wikipedia

    en.wikipedia.org/wiki/List_of_animal_sounds

    Certain words in the English language represent animal sounds: the noises and vocalizations of particular animals, especially noises used by animals for communication. The words can be used as verbs or interjections in addition to nouns , and many of them are also specifically onomatopoeic .

  5. Sound from ultrasound - Wikipedia

    en.wikipedia.org/wiki/Sound_from_ultrasound

    Sound from ultrasound is the name given here to the generation of audible sound from modulated ultrasound without using an active receiver. This happens when the modulated ultrasound passes through a nonlinear medium which acts, intentionally or unintentionally, as a demodulator .

  6. Animal echolocation - Wikipedia

    en.wikipedia.org/wiki/Animal_echolocation

    A depiction of the ultrasound signals emitted by a bat, and the echo from a nearby object. Echolocation, also called bio sonar, is a biological active sonar used by several animal groups, both in the air and underwater. Echolocating animals emit calls and listen to the echoes of those calls that return from various objects near them. They use ...

  7. Zoomusicology - Wikipedia

    en.wikipedia.org/wiki/Zoomusicology

    Field recording expert Bernie Krause in 1988 released a single ("Jungle Shoes"/"Fish Wrap") and an album (Gorillas in the Mix) of songs composed of animal and nature sounds. [16] The Indian zoomusicologist, A. J. Mithra composed music using bird, animal and frog sounds from 2008 until his death in 2014. [ 17 ]

  8. Music and sleep - Wikipedia

    en.wikipedia.org/wiki/Music_and_sleep

    The characteristics of music that have improved sleep quality in the music-sleep literature include slow tempo, small change of rhythm, and moderate pitch variation of melody. [16] The selection of music (self selected or researcher selected) does not appear to impact sleep quality. [25]

  9. List of unexplained sounds - Wikipedia

    en.wikipedia.org/wiki/List_of_unexplained_sounds

    Bio-duck, a quacking-like sound produced by the Antarctic minke whale. [11] [12] The Ping, described as "hums and buzzes" whose "sound[s] scare sea animals." It was detected by shipboard sonars in the Fury and Hecla Strait of northern Canada during the summer of 2016. It was investigated by Canadian military authorities, who did not detect any ...