{"id":21002,"date":"2022-12-05T14:57:17","date_gmt":"2022-12-05T14:57:17","guid":{"rendered":"https:\/\/mailinvest.blog\/index.php\/2022\/12\/05\/bats-growl-just-like-death-metal-singers\/"},"modified":"2022-12-05T14:57:17","modified_gmt":"2022-12-05T14:57:17","slug":"bats-growl-just-like-death-metal-singers","status":"publish","type":"post","link":"https:\/\/mailinvest.blog\/index.php\/2022\/12\/05\/bats-growl-just-like-death-metal-singers\/","title":{"rendered":"Bats Growl Just Like Death Metal Singers"},"content":{"rendered":"

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Myotis daubentonii. (Credit: Gilles San Martin\/CC BY-SA 2.0)<\/small><\/center>Bats and death metal singers don\u2019t just share a dark and edgy vibe\u2014they also share vocalization techniques. According to a new study, bats engage their \u201cvoice boxes\u201d much like death metal artists do to create growl-like sounds.<\/p>\n

Bats are perhaps the most recognizable echolocators, or creatures that use reflected sound waves to understand the world around them. Most people know bats use chirps and clicks to echolocate, but some bats also employ their vast, seven-octave vocal range to growl. Despite these growls\u2019 vital role in navigation and communication, scientists have historically struggled to understand exactly how bats produce such deep and guttural sounds.<\/p>\n

Recent research reveals that bats\u2019 growling techniques are surprisingly similar to humans\u2019. According to a study<\/a> published last week in the journal PLOS Biology<\/i>, biologists at the University of Southern Denmark removed the larynx from five deceased bats (Myotis daubentonii<\/i>) and applied air flow that imitated the bats\u2019 natural breathing. Using a small 250,000fps camera, the scientists observed the larynxes\u2019 vocal membranes and ventricular folds, or \u201cfalse vocal folds,\u201d as they vibrated at different frequencies.<\/p>\n

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(Credit: Gilles San Martin\/CC BY-SA 2.0)<\/p>\n<\/div>\n

The vocal membranes\u2019 vibrations produced high-frequency noise (10 to 70 kHz), which the scientists say is part of the bats\u2019 echolocation and social call range. The false vocal folds\u2019 vibrations, however, produced low-frequency sounds (1 to 5 kHz) that bats are known to use during conflict. Though humans don\u2019t typically produce sounds at such a low frequency, there are a few exceptions, including death metal singers and Mongolian throat singers.<\/p>\n

\u201cWe identified for the first time what physical structures within the larynx oscillate to make their different vocalizations,\u201d said<\/a> sound communication researcher Coen Elemans.\u00a0 \u201cFor example, bats can make low-frequency calls using their so-called \u2018false vocal folds\u2019 like human death metal singers do.\u201d<\/p>\n

The biologists believe Myotis daubentonii <\/i>evolved to produce high-frequency sounds that can be used to locate fast-moving prey, like flies and mosquitoes. Low-frequency sounds, however, appear to be used in more negative circumstances. \u201cSome seem aggressive, some may be an expression of annoyance, and some may have a very different function,\u201d study co-author and bat expert Lasse Jakobsen said.<\/p>\n

Now Read:<\/b><\/p>\n

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