Animal squawks squeaks and songs (with helium)

William_RamsayAlthough a considerable body of scholarly work has examined the effects of Helium (2He) on human voice production [see, for example (Helium-assisted) High note research] we are by no means the only animals to have been investigated in this respect – here is a (non-exhaustive) list of examples of other creatures who have squawked, croaked, squeaked and even sung (soprano) under the influence of 2He.

Birds: Vocal tract resonances in oscine bird sound production: evidence from birdsongs in a helium atmosphere.

Frogs: Frogs in helium: The anuran vocal sac is not a cavity resonator.

Bats: The acoustics of the vocal tract in the horseshoe bat Rhinolophus hildebrandti.

Dolphins: Dolphin whistles: a functional misnomer revealed by heliox breathing.

Monkeys: The source-filter theory of whistle-like calls in marmosets: Acoustic analysis and simulation of helium-modulated voices.

BONUS with audio: ‘Soprano singing in gibbons’  – their normal singing can be heard here, via the Silvery Gibbon Project, and their Helium Soprano voice, here, via Nature.

Note: The photo shows Sir William Ramsay KCB FRS FRSE (1852–1916) the British chemist who received the 1904 Nobel Prize in Chemistry for his work on the ‘Noble Gases’ e.g. 2He

 






Leave a Reply

Your email address will not be published.

*

code


Please note that to avoid comment spam, no e-mail addresses or web links are allowed in the message! If you include one, the message will be auto-deleted