# hwk05 - Chapter 5 Solution RQ2 The highest frequency we can...

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1 Chapter 5 Solution RQ2. The highest frequency we can hear is 20,000Hz. The lowest frequency we can hear is 20Hz. Hence, the ratio is 3 10 times, or more than nine octaves. RQ6. The Eustachian tube connects the middle ear to the oral cavity.

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2 RQ13. In 1907, Rayleigh offered a second theory of localization to explain low-frequency effects. A sound coming from the side strikes one ear before the other, and thus the sounds in the two ears will be slightly out of phase. So low frequency localization occurs mainly through detection of the phase difference at the two ears, i.e., via the difference in arrive time . Here, the low frequency is from 0 to 1000Hz. RQ14. According to Rayleigh’s explanation, a sound coming from one side of the head produces a more intense sound in one ear than in the opposite ear, because the head casts a “sound shadow” for sounds of high frequency. So high frequency localization occurs through intensity difference . Here, the high frequency is above 4000Hz. QTD2.
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hwk05 - Chapter 5 Solution RQ2 The highest frequency we can...

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