Range of frequencies that can be heard by humans or other animals
Hearing range describes the frequency range that can be heard by humans or other animals, though it can also refer to the range of levels. The human range is commonly given as 20 to 20,000 Hz, although there is considerable variation between individuals, especially at high frequencies, and a gradual loss of sensitivity to higher frequencies with age is considered normal. Sensitivity also varies with frequency, as shown by equal-loudness contours. Routine investigation for hearing loss usually involves an audiogram which shows threshold levels relative to a normal.
Several animal species are able to 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 16Hz–12kHz , while some whales can hear infrasonic sounds as low as 7 Hz.
^Multiple sources:
Fay, R.R. (1988). Hearing in Vertebrates: A Psychophysics Databook. Winnetka, IL: Hill-Fay Associates. ISBN 9780961855901. LCCN 88091030.
D Warfield. 1973. The study of hearing in animals. In: W Gay, ed., Methods of Animal Experimentation, IV. Academic Press, London, pp 43–143.
^Multiple sources:
Fay and AN Popper, eds. 1994. Comparative Hearing: Mammals. Springer Handbook of Auditory Research Series. Springer-Verlag, NY.
CD West. 1985. The relationship of the spiral turns of the cochela and the length of the basilar membrane to the range of audible frequencies in ground dwelling mammals. Journal of the Acoustical Society of America 77:1091-1101.
EA Lipman and JR Grassi. 1942. Comparative auditory sensitivity of man and dog. Amer J Psychol 55:84-89.
HE Heffner. 1983. Hearing in large and small dogs: Absolute thresholds and size of the tympanic membrane. Behav Neurosci 97:310-318.
Hearingrange describes the frequency range that can be heard by humans or other animals, though it can also refer to the range of levels. The human range...
Hearing, or auditory perception, is the ability to perceive sounds through an organ, such as an ear, by detecting vibrations as periodic changes in the...
20 Hz are known as infrasound. Different animal species have varying hearingranges. Sound is defined as "(a) Oscillation in pressure, stress, particle...
Hearing loss is a partial or total inability to hear. Hearing loss may be present at birth or acquired at any time afterwards. Hearing loss may occur in...
dynamic range compression, directionality, frequency lowering, and noise reduction. Modern hearing aids require configuration to match the hearing loss,...
dog's hearingrange is about 45 kHz, while a cat's is 64 kHz. It is thought that the wild ancestors of cats and dogs evolved this higher hearingrange in...
audible limit of human hearing in healthy young adults. The physical principles of acoustic waves apply to any frequency range, including ultrasound....
of sound that most determines pitch. The generally accepted standard hearingrange for humans is 20 to 20,000 Hz. In air at atmospheric pressure, these...
and a flat (neutral, uncolored) frequency response within the human hearingrange. High fidelity contrasts with the lower-quality "lo-fi" sound produced...
The absolute threshold of hearing (ATH), also known as the absolute hearing threshold or auditory threshold, is the minimum sound level of a pure tone...
not close enough to support transmission of sound waves within the hearingrange. As altitude increases through the atmosphere, the first sound waves...
War II as part of the Manhattan Project to develop the atomic bomb. The hearing resulted in Oppenheimer's Q clearance being revoked. This marked the end...
rhythmically in time with the beat. Hearing aids use a compressor to bring the audio volume into the listener's hearingrange. To help the patient perceive...
higher than E♭ 10 are outside most humans' hearingrange, although notes slightly outside the hearingrange on the low end may still be indirectly perceptible...
tears). Cats have one of the broadest ranges of hearing among mammals. Humans and cats have a similar range of hearing on the low end of the scale, but cats...
of hearing. In 2014 Liu and others delved into the evolutionary adaptations of Prestin, unveiling its critical role in the ultrasonic hearingrange essential...
produce different ranges of notes within the hearingrange. The electromagnetic spectrum can be divided into many different ranges such as visible light...
waveform generators (AWGs). If the oscillator operates above the human hearingrange (>20 kHz), the generator will often include some sort of modulation...
Rotary woofers excel at producing sounds below 20 Hz, below the normal hearingrange; when installed in the wall of a sealed room, they can produce audio...
within normal range. However, cases of permanent or chronic conductive hearing loss may require other treatment modalities such as hearing aid devices to...
the peak of the blackbody spectrum is above the upper limit of human hearingrange. In those situations, for the purposes of what is heard, black noise...
emitted drop below the typical hearing spectrum of the owl's usual prey and also within the owl's own best hearingrange. This optimizes the owl's ability...
high range to A1. The fundamental frequencies of the lowest notes in this tuning lie below 20 Hz—the commonly-stated lower bound of human hearingrange—but...
Sensorineural hearing loss (SNHL) is a type of hearing loss in which the root cause lies in the inner ear, sensory organ (cochlea and associated structures)...
public hearing about the law enforcement experience during the mob violence on that day. In 2022, the Committee held ten live televised public hearings that...
dynamic range compression. The human senses of sight and hearing have a relatively high dynamic range. However, a human cannot perform these feats of perception...