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Several animal species can hear frequencies well beyond the human hearing range. Some dolphins and bats , for example, can hear frequencies over 100 kHz. Elephants can hear sounds at 16 Hz–12 kHz, while some whales can hear infrasonic sounds as low as 7 Hz.
Process in a dolphin echolocation: in green the sounds generated by the dolphin, in red from the fish. Idealized dolphin head showing the regions involved in sound production. This image was redrawn from Cranford (2000). Odontocetes produce rapid bursts of high-frequency clicks that are thought to be primarily for echolocation. Specialized ...
Like other whales, the male fin whale has been observed to make long, loud, low-frequency sounds. [19]Most sounds are frequency-modulated (FM) down-swept infrasonic pulses from 16 to 40 hertz frequency (the range of sounds that most humans can hear falls between 20 hertz and 20 kilohertz).
In this article, I will explore what humans can hear, including frequencies, hearing in noise, directional hearing, and how it compares to an animal’s hearing ability. ... ⭐ Dolphins can also ...
The frequency of most dog whistles is within the range of 23 to 54 kHz. [25] Toothed whales, including dolphins, can hear ultrasound and use such sounds in their navigational system to orient and to capture prey. [26] Porpoises have the highest known upper hearing limit at around 160 kHz. [27] Several types of fish can detect ultrasound.
Research has recently shown that beaked and blue whales are sensitive to mid-frequency active sonar and move rapidly away from the source of the sonar, a response that disrupts their feeding and can cause mass strandings. [2] Some marine animals, such as whales and dolphins, use echolocation or "biosonar" systems to locate predators and prey.
Signature whistles are in a higher frequency range than humans can hear. [6] Researchers define a signature whistle as a whistle with a unique frequency curve that dominates in the repertoire of a dolphin. [7] Each dolphin has a distinct signature whistle that other members of its social group use to individually identify the whistler. [4]
Dolphins and other toothed whales are known for their acute hearing sensitivity, especially in the frequency range 5 to 50 kHz. [ 39 ] [ 44 ] Several species have hearing thresholds between 30 and 50 dB re 1 μPa in this frequency range.