More recent studies on younger whales discovered that the whales could hear sounds at frequencies as high as 100 kHz.
Pacific White-Sided & Northern Right Whale … Both whales reliably responded to 100-kHz tones (95 dB), and one whale to a 120-kHz tone, a variation from an earlier reported high-frequency limit of 32 kHz for a male Orcinus. Early studies published in 1972 suggested that the hearing range of killer whales was about 0.5 to 31 kHz. Short range calls are reported during social and resting periods while long range are more commonly reported during foraging and feeding. Baleen whales communicate at low frequencies, while toothed whales have a wider range of frequencies in their repertoire. Investigation of hearing during echolocation requires that an active echolocation task be underway. Offshore killer whales have rounded dorsal fins and are generally smaller than the other types of killer whales.
Greatest sensitivity ranged from 18 to 42 kHz with the least sensitivity to frequencies from 60 to 120 kHz. Hearing range. Bottlenose Dolphins and False Killer Whales Common Dolphins. Resident killer whales feed on fish, a prey with poor hearing abilities, whereas transient killer whales hunt marine mammals, which have sensitive underwater hearing within the frequency range of killer whale vocal communication. Offshore Killer Whales.
Early studies suggested that the hearing range of killer whales was about 0.5 to 31 kHz. Learn More... Blue Whale (low frequency, requires bass) Bottlenose and Risso's Dolphins. Like other whales, the male fin whale has been observed to make long, loud, low-frequency sounds.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). Killer whales have been observed to produce long range calls that are stereotyped and high frequency travelling distances from 10–16 km (6.2–9.9 mi) as well as short range calls that can travel distances from 5–9 km (3.1–5.6 mi). Greatest sensitivity is at about 15 kHz. The magnitude and frequency range over which the hearing deficit occurs cannot be specified with the techniques used here as the click stimulus lacks the frequency specificity necessary for frequency-specific threshold measures. Despite smaller amplitude ABRs than smaller delphinids, the results demonstrated that ABR audiometry can provide a useful suprathreshold estimate of hearing range in toothed whales. Killer whale (Orcinus orca) audiograms were measured using behavioral responses and auditory evoked potentials (AEPs) from two trained adult females. More recent studies show killer whales could hear sounds at frequencies as high as 120 kHz. The killer whale’s ears are located just behind the eyes and can receive sound More recent studies show killer whales could hear sounds at frequencies as high as 120 kHz. The basic experimental method. In fact, they are believed to be able to communicate and hear between 20 and 200 000 Hertz. The mean auditory brainstem response (ABR) audiogram to tones between 1 and 100 kHz was 12 dB ( re 1 μ Pa) less sensitive than behavioral audiograms from the same individuals (±8 dB). Transient killer whales’ diets are more varied and can include seals, sea lions, porpoises, dolphins, squid and other whales. Minke Whale (boing) Pacific White Sided Dolphins. The oldest whale is from the genus Pakicetus, known from a 52-million-year-old fossil from Pakistan.It had four legs but is classified as a whale because its enlarged auditory bulla, has an enlarged, distinct tympanic wall, which is characteristic of modern whales.The next step in the evolutionary chain is Ambulocetus, discovered in 1994, which could both walk on land and swim. Scanning an entire minke whale and applying our FEM tools allowed us to predict how well the whale can hear across a range of frequencies." 3. Killer whales and other marine mammals likely hear sonar signals more than we've known. Killer whale hearing is very developed, The average hearing range for a human is a low 0.2 to 17 kHz, while the killer whale has a hearing range of 0.5 to 125 kHz. • A toothed whale’s small external ear openings don’t seem to be important in conducting sound. A study of hearing abilities of killer whales was conducted to help assess the impact of noise produced by vessels. For more information, please go: HERE Predicted maximum horizontal detection ranges at 50 kHz for a killer whale at the surface echolocating on a Chinook salmon at 65 m depth for various noise conditions.........................................42 Some of the sounds are above the normal hearing range for many people. Mechanics of sound reception. Killer Whales. They have the largest range and can occur up to 9 miles offshore. In this study, we investigated how the superior hearing ability of mammalian prey has shaped the vocal behaviour of the transient killer whale ecotype.