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# Physics: The dyad E4:B4 is sounded. What are the three frequencies perceived by a listener? ?

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- NCSLv 73 weeks ago
Not in my wheelhouse, but here's a shot:

Clearly 330 Hz (E4) and 495 Hz (B4, which is 50% higher) are heard.

The third frequency perceived is either 165 Hz (E3, 1/2 of E4 and 1/3 of B4) -- and that's my first guess -- or 990 Hz (B5, 3x E4 and 2x B4).

Let me know if you would, please.

Source(s): https://pages.mtu.edu/~suits/notefreqs.html

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