Exact(10)
But US researchers have documented persistent noise also occurring at medium and higher frequencies, including at 20,000Hz where killer whales, also known as orcas, hear best.
Chimpanzees, for example, have been shown to hear best at about 1,000 hertz and 8,000 hertz, so humans' greater sensitivity to mid-range frequencies can be seen as an evolutionary adaptation to speech.
BURMESE PROVERB Sometimes it seems that people hear best what we do not say.
Both hear best at a frequency of 600 Hz.
I'd love to hear best and worst gift ideas.
Raptors hear best in the range of 1-4 kHz [ 50, 51], with sensitivity to sounds below and above this being much poorer than primates.
Similar(48)
For example, the murmur of mitral stenosis may be described as a grade 3/6, low-pitched, rumbling, presystolic murmur heard best at the apex and having an increased first heart sound at the apex.
One of the most agile and exciting musicians to come along in the last decade of jazz, Mr. Terrasson, the pianist, may be heard best live, whether with Leon Parker, in tandem with the vibraphonist Stefon Harris, or here, in his own trio.
A continuous murmur was heard best at the right lower parasternal border.
Specifically, data suggests that Tyrannosaurus rex heard best in the low-frequency range, and that low-frequency sounds were an important part of tyrannosaur behavior.
In the non-forced (NF) condition, the subjects were instructed to report the syllable they heard best or most clearly after each dichotic presentation.
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