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louboutin pas cher How We Hear - The Basics - Heal

 
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PostPosted: Tue 18:05, 15 Oct 2013    Post subject: louboutin pas cher How We Hear - The Basics - Heal

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Humans can generally hear sounds with frequencies between 20 Hz and 20 kHz. Human hearing is able to discriminate small differences in loudness (intensity) and pitch (frequency) over that large [url=http://www.mnfruit.com/louboutinpascher.php]louboutin[/url] range of audible sound. This healthy human range of frequency detection varies significantly with age, occupational hearing damage, and gender; some individuals are able to hear pitches up [url=http://www.mnfruit.com/louboutinpascher.php]louboutin pas cher[/url] to 22 kHz and perhaps beyond, while others are limited to about 16 kHz. The ability of most adults to hear sounds above about 8 kHz begins to deteriorate [url=http://www.rtnagel.com/louboutin.php]louboutin[/url] in early middle age.


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