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2. List of animal sounds - Wikipedia

   en.wikipedia.org/wiki/List_of_animal_sounds

   Certain words in the English language represent animal sounds: the noises and vocalizations of particular animals, especially noises used by animals for communication. The words can be used as verbs or interjections in addition to nouns , and many of them are also specifically onomatopoeic .

3. How to Read An Audiogram (Hearing Test) - AOL

   www.aol.com/read-audiogram-hearing-test...

   Key Takeaways: An audiogram shows the softest sounds (volume: soft to loud) you hear at each frequency (low to high pitches). The lower the line on the graph, the worse your hearing is at that ...

4. Bird vocalization - Wikipedia

   en.wikipedia.org/wiki/Bird_vocalization

   The acoustic adaptation hypothesis predicts that narrow bandwidths, low frequencies, and long elements and inter-element intervals should be found in habitats with complex vegetation structures (which would absorb and muffle sounds), while high frequencies, broad bandwidth, high-frequency modulations (trills), and short elements and inter ...

5. Hearing range - Wikipedia

   en.wikipedia.org/wiki/Hearing_range

   A basic measure of hearing is afforded by an audiogram, a graph of the absolute threshold of hearing (minimum discernible sound level) at various frequencies throughout an organism's nominal hearing range. [4] Behavioural hearing tests or physiological tests can be used to find the hearing thresholds of humans and other animals.

6. Dog whistle - Wikipedia

   en.wikipedia.org/wiki/Dog_whistle

   [3] [4] It is thought that the wild ancestors of cats and dogs evolved this higher hearing range in order to hear high-frequency sounds made by their preferred prey, small rodents. [3] The frequency of most dog whistles is within the range of 23 to 54 kHz, [ 5 ] so they are above the range of human hearing, although some are adjustable down ...

7. Audiometry - Wikipedia

   en.wikipedia.org/wiki/Audiometry

   A pure tone audiometry hearing test is the gold standard for evaluation of hearing loss or disability. [medical citation needed] Other types of hearing tests also generate graphs or tables of results that may be loosely called 'audiograms', but the term is universally used to refer to the result of a pure tone audiometry hearing test.

8. Kind Human Creates ‘Starnuts’ for Squirrels in Her Backyard ...

   www.aol.com/kind-human-creates-starnuts...

   Follow us on YouTube for more entertaining videos. Or, share your own adorable pet by submitting a video , and sign up for our newsletter for the latest pet updates and tips. Show comments

9. What is HMPV? Here's what you need to know as virus cases ...

   www.aol.com/hmpv-know-virus-cases-tick-234913762...

   As cases of the HMPV virus continue to increase in the U.S. and in China, here's what you need to know about the virus.