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What is the commonly given human hearing range in hertz?
What is the commonly given human hearing range in hertz?
20 to 20,000 Hz
What is a routine investigation for hearing loss that involves a graph of threshold levels relative to a normal?
What is a routine investigation for hearing loss that involves a graph of threshold levels relative to a normal?
an audiogram
What is considered normal in terms of sensitivity to higher frequencies with age?
What is considered normal in terms of sensitivity to higher frequencies with age?
a gradual loss of sensitivity
Give an example of an animal species that can hear frequencies well beyond the human hearing range.
Give an example of an animal species that can hear frequencies well beyond the human hearing range.
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What is a basic measure of hearing that is represented by a graph of the absolute threshold of hearing at various frequencies?
What is a basic measure of hearing that is represented by a graph of the absolute threshold of hearing at various frequencies?
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