Using the Fletcher-Munson curves of equal loudness, rank the following tones by

Question

Using the Fletcher-Munson curves of equal loudness, rank the following tones by decreasing loudness (1=loudest). Remember that the horizontal axis is marked as a logarithmic scale. The divisions between the far left and 100 represent 20, 30, 40, 50, 60, 70 ,80 and 90. The divisions between 100 and 1000 represent 200, 300, 400, 500, 600, 700, 800, and 900.

1234 A 70dB tone at a frequency of 10,000Hz
1234 A 70dB tone at a frequency of 1000Hz
1234 A 70dB tone at a frequency of 3,000Hz
1234 A 70dB tone at a frequency of 40Hz

Explanation / Answer

Ranks

3, 2, 1, 4

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