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daniel_i_l
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Why can a sound wave with a high frequency travel further and stay more concentrated (i guess there are basically the same) than one with a lower frequency?
Thanks.
Thanks.
Danger said:I didn't check out the link, but I find it pecular that Wiki would have an article about 'hypersonic sound'. There is no such thing.
Danger said:I didn't check out the link, but I find it pecular that Wiki would have an article about 'hypersonic sound'.
From http://www.bbc.co.uk/health/conditions/deafness1.shtmlHearing loss is becoming an epidemic problem for today's adults – and it's happening earlier than ever. "People are starting to lose their hearing 20 years earlier than in the past," said Heather Ferguson, president of the Hearing Foundation of Canada in Toronto. "I believe we're on the verge of noise induced hearing loss becoming a public health crisis."
Laws on noise pollution are highly outdated and have been rendered dangerously obsolete by the common availability of various consumer items which generate dangerous levels of infrasound, sufficient to cause permanent hearing loss with a minute or so at considerable distance.Excessive exposure to noise is an important cause of a particular pattern of hearing loss, contributing to problems for up to 50 per cent of deaf people. Often people fail to realize the damage they're doing to their ears until it's too late. Although loud music is often blamed (and MP3 players are said to be storing up an epidemic of deafness in years to come) research has also blamed tractors (for deafness in children of farmers), aircraft noise, sports shooting and even cordless telephones.
Is this a question about "diffraction"? (Other factors come to mind, like perceived directionality relating to the difference of scale between wavelength and the listener's head.)daniel_i_l said:Why can a sound wave with a high frequency [..] stay more concentrated[..?]
High frequency sound waves are defined as sound waves with frequencies greater than 20,000 Hz. These waves are typically inaudible to the human ear but can be perceived by some animals, such as bats and dolphins.
High frequency sound waves travel through a medium, such as air, by creating a series of compressions and rarefactions. These waves travel at a faster speed than low frequency sound waves, allowing them to cover longer distances.
High frequency sound waves have a wide range of applications, including medical imaging, sonar technology, and ultrasonic cleaning. They can also be used for communication, such as in wireless microphones.
Exposure to high frequency sound waves can have negative effects on human health, including hearing loss, vertigo, and headaches. It is important to limit exposure to high frequency sound waves, especially in occupational settings.
High frequency sound waves can be measured using specialized equipment, such as a frequency meter or an oscilloscope. These devices can detect and measure the frequency, amplitude, and wavelength of sound waves.